ZXWN MGW Media Gateway Hardware Description

ZXWN MGW Media Gateway

Hardware Description Version 3.06.30

ZTE CORPORATION ZTE Plaza, Keji Road South, Hi-Tech Industrial Park, Nanshan District, Shenzhen, P. R. China 518057 Tel: (86) 755 26771900 800-9830-9830 Fax: (86) 755 26772236 URL: http://support.zte.com.cn E-mail: [email protected]

LEGAL INFORMATION Copyright © 2006 ZTE CORPORATION. The contents of this document are protected by copyright laws and international treaties. Any reproduction or distribution of this document or any portion of this document, in any form by any means, without the prior written consent of ZTE CORPORATION is prohibited. Additionally, the contents of this document are protected by contractual confidentiality obligations. All company, brand and product names are trade or service marks, or registered trade or service marks, of ZTE CORPORATION or of their respective owners. This document is provided “as is”, and all express, implied, or statutory warranties, representations or conditions are disclaimed, including without limitation any implied warranty of merchantability, fitness for a particular purpose, title or non-infringement. ZTE CORPORATION and its licensors shall not be liable for damages resulting from the use of or reliance on the information contained herein. ZTE CORPORATION or its licensors may have current or pending intellectual property rights or applications covering the subject matter of this document. Except as expressly provided in any written license between ZTE CORPORATION and its licensee, the user of this document shall not acquire any license to the subject matter herein. The contents of this document and all policies of ZTE CORPORATION, including without limitation policies related to support or training are subject to change without notice.

Revision History Date

Revision No.

Serial No.

Edition

June 25, 2007

R1.0

sjzl20071769

First edition

ZTE CORPORATION Values Your Comments & Suggestions! Your opinion is of great value and will help us improve the quality of our product documentation and offer better services to our customers. Please fax to: (86) 755-26772236; or mail to Documentation R&D Department, ZTE CORPORATION, ZTE Plaza, A Wing, Keji Road South, Hi-Tech Industrial Park, Shenzhen, P. R. China 518057. Thank you for your cooperation! Document Name

ZXWN MGW Media Gateway Hardware Description

Product Version

V3.06.30

Document Revision Number

R1.0

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Contents ZXWN MGW Media Gateway Hardware Description................................................1 Version 3.06.30.........................................................1 About This Manual......................................................i Declaration of RoHS Compliance.................................v Chapter 1..................................................................1 MGW Cabinet............................................................1 Chapter 2................................................................21 MGW Shelves..........................................................21 Chapter 3................................................................43 MGW Boards ..........................................................43 Chapter 4..............................................................161 Integrated Alarm Box............................................161 Chapter 5..............................................................167 MGW Inner Cables.................................................167 Chapter 6..............................................................175 MGW Outer Cables.................................................175 Abbreviations........................................................205 Glossary...............................................................209 Figures.................................................................213 Tables...................................................................219

Index...................................................................225

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About This Manual Purpose This manual provides detailed description about hardware modules and components of ZXWN MGW system.

Intended Audience This document is intended for engineers and technicians who perform operation activities on the ZXWN MGW system.

Prerequisite Skill and Knowledge To use this document effectively, users should have a general understanding of wireless telecommunications technology. Familiarity with the following is helpful: 

MGW system and its various components



User interfaces of MGW system.



Local operating procedures of ZXWN MGW system

What Is in This Manual This Manual contains the following chapters: TABLE 1 CHAPTER SUMMARY

Chapter

Summary

Chapter 1 ZXWN MGW Cabinet

Introduces structure and layout of MGW cabinet.

Chapter 2 ZXWN MGW Shelves

Explains detail specifications of MGW shelves.

Chapter 3 Boards and Modules

Introduces various MGW boards and modules.

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i

Typographical Chapter

Summary

Conventions

Chapter 4 Integrated Alarm Box

Mouse Operation Describes the appearance, functions Conventions and principle of the integrated alarm box

Chapter 5 Inner Cables

Brief introduction of inner cables of MGW.

Chapter 6 Outer Cables

Introduction of outer cables of MGW cabinet.

Conventions ZTE documents employ the following typographical conventions. TABLE 2 TYPOGRAPHICAL CONVENTIONS

Typeface

Meaning

Italics

References to other Manuals and documents.

“Quotes”

Links on screens.

Bold

Menus, menu options, function names, input fields, radio button names, check boxes, dropdown lists, dialog box names, window names.

CAPS

Keys on the keymodule and buttons on screens and company name.

Constant width

Text that you type, program code, files and directory names, and function names.

[]

Optional parameters.

{}

Mandatory parameters.

|

Select one of the parameters that are delimited by it.

TABLE 3 MOUSE OPERATION CONVENTIONS

Typeface

Meaning

Click

Refers to clicking the primary mouse button (usually the left mouse button) once.

Double-click

Refers to quickly clicking the primary mouse button (usually the left mouse button) twice.

Right-click

Refers to clicking the secondary mouse button (usually the right mouse button) once.

Drag

Refers to pressing and holding a mouse button and moving the mouse.

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ii

About This Manual Customer Support

Documentation Support

How to Get in Touch The following sections provide information on how to obtain support for the documentation and the software. If you have problems, questions, comments, or suggestions regarding your product, contact us by e-mail at [email protected]. You can also call our customer support center at (86) 755 26771900 and (86) 800-9830-9830. ZTE welcomes your comments and suggestions on the quality and usefulness of this document. For further questions, comments, or suggestions on the documentation, you can contact us by e-mail at [email protected]; or you can fax your comments and suggestions to (86) 755 26772236. You can also browse our website at http://support.zte.com.cn, which contains various interesting subjects like documentation, knowledge base, forum and service request.

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iii

ZXWN MGW Media Gateway Hardware Description

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Declaration of RoHS Compliance To minimize the environmental impact and take more responsibility to the earth we live, this document shall serve as formal declaration that the ZXWN MGW manufactured by ZTE CORPORATION are in compliance with the Directive 2002/95/EC of the European Parliament - RoHS (Restriction of Hazardous Substances) with respect to the following substances: 

Lead (Pb)



Mercury (Hg)



Cadmium (Cd)



Hexavalent Chromium (Cr (VI))



PolyBrominated Biphenyls (PBB’s)



PolyBrominated Diphenyl Ethers (PBDE’s)

… The ZXWN MGW manufactured by ZTE CORPORATION meet the requirements of EU 2002/95/EC; however, some assemblies are customized to client specifications. Addition of specialized, customer-specified materials or processes which do not meet the requirements of EU 2002/95/EC may negate RoHS compliance of the assembly. To guarantee compliance of the assembly, the need for compliant product must be communicated to ZTE CORPORATION in written form. This declaration is issued based on our current level of knowledge. Since conditions of use are outside our control, ZTE CORPORATION makes no warranties, express or implied, and assumes no liability in connection with the use of this information.

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v

ZXWN MGW Media Gateway Hardware Description

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Introduction

Chapter

Contents

Overview

1

MGW Cabinet Overview This chapter describes the structure, wiring, technical indices, and mechanical components of ZXWN MGW cabinet. This chapter includes the following topics. TABLE 4 TOPICS IN CHAPTER 1

Topics

Page No.

Cabinet Structure

1

Cabinet Composition

4

Power Distribution Shelf

5

Service Shelf

9

Fan Shelf

13

Bus Bar

13

Optical Cable Shelf

15

Cabinet Description

15

Technical Indices

18

Cabinet Structure ZXWN MGW cabinet adopts a 19-inch standard cabinet structure, which has maximum internal space of 42U. Figure 1 shows the standard MGW cabinet.

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1

Dimensions

Integrated Cabinet

FIGURE 1 MGW STANDARD CABINET

Table 5 shows the 19-inch standard MGW cabinet dimensions. TABLE 5 CABINET DIMENSIONS

Height (h)

Width (w)

Depth (d)

2000mm

600mm

800mm

Figure 2 shows the integrated 19-inch MGW cabinet.

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Chapter 1 MGW Cabinet

Cabinet Parts FIGURE 2 INTEGRATED MGW CABINET

Figure 3 shows the 19-inch MGW cabinet parts.

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ZXWN MGW Media Gateway Hardware Description

Cabinet Configuration

Layout Structure

FIGURE 3 CABINET PARTS

Cabinet Composition Table 6 shows the maximum configuration of a single ZXWN MGW cabinet. TABLE 6 CABINET COMPOSITION

Service Sub rack

Power Distribution Sub rack

Cable Sub rack

Fan Sub rack

Blank filler Panels

Total

4 Layers ×8U

1 Layer × 2 U

4 Layers ×1U

3 Layers ×1U

1 Layer ×1U

42 U

Corresponding modules configuration in the cabinet is through cabinet power access filter, bus bar integrated equipment and horizontal back wiring management support. Figure 4 shows the layout structure view of MGW cabinet.

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Chapter 1 MGW Cabinet

Function of Each Part FIGURE 4 LAYOUT STRUCTURE OF CABINET

Blank panel (1U) Power subrack (2U)

Fan subrack (1U)

Service subrack (8U)

Cable subrack (1U)

Service subrack (8U)

Cable subrack (1U) Fan subrack (1U)

Service subrack (8U)

Cable subrack (1U)

Service subrack (8U)

Cable subrack (1U) Fan subrack (1U) Air filter

Table 7 shows the function of each part.

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ZXWN MGW Media Gateway Hardware Description

Overview

Dimensions

TABLE 7 FUNCTION OF EACH PART

Parts

Functions The power shelf distributes the input -48V power to each shelf.

Power shelf

The power shelf has the lightning proof and overcurrent protection functions, checks the input power voltage and the distributed output power statuses, and gives alarm signal if necessary. The power shelf also effectively monitors the rack running environment, fan heat dissipation system, access control etc., and reports through the RS485 interface It is composed of each kind of board combined through the backplane.

Service shelf

In addition, the service sub rack also includes the shelf power filter, which is used to separate and filter -48V input power The service shelf of the MGW has four types: level-1 switching shelf, circuit switching shelf, control shelf and resource shelf

Fan shelf

Provides forced air cooling for the equipment

Cable shelf

Used to arrange fiber, which passes the cable shelf under each service shelf, and is leaded to the two sides of the cabinet through the front cable trough

Bus bar

Located at the internal side of the cabinet. The power is provided to each shelf through the bus bar

Rear horizontal cable rack

Used to arrange the cables from the rear of the cabinet

Cabinet power input filter

There are two combined filters on the top of the cabinet, which are used to filter the two lines of -48V external input power

Power Distribution Shelf Power distribution shelf is a universal 2U high shelf module. Table 7 shows the dimensions of power distribution shelf. TABLE 8 DIMENSIONS

Height (h)

Width (w)

Depth (d)

88.1mm

482.6mm

374mm

Note: These dimensions excludes protrusion connection terminal on the back.

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Chapter 1 MGW Cabinet

Connection Terminal

Plane View

Function of Each Part

Connection terminal installation is on the backboard of the shelf and monitoring module installation is on the front panel of shelf. Front panel can revolve around the axis outward, with an angle of 90 degree. Thus, shelf can be easily opened for maintenance. During normal operation, front panel can be fixed to the shelf with captive screws. Figure 5 shows power distribution shelf plane view. FIGURE 5 PLANE VIEW

1

5

4

6

2

8

3

7

Table 9 shows the function of each part in Figure 5. TABLE 9 FUNCTION OF EACH PART OF THE POWER DISTRIBUTION SHELF

Number

Part Name

Function

1

Frame

Casing frame

2

Isolated diode radiator

Used to radiate heat from the isolated diode

3

Switch

Power switch that can play the role of over-current protection

4

Arrester

Proof against lightning strike

5

Connection terminal

Used to lead in the two lines of -48V external power output by the filter, and output it to the bus bar to provide power for the sub rack

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ZXWN MGW Media Gateway Hardware Description

Interface Number Part Name Outline View Function 6

7

PWRDB

PWRD

Used to provide the external interface for the POWERD: 1.

Input interface of the environment detecting sensor

2.

RS485 interface (with the OMP)

3.

Input interface monitored by the fan

4.

Access control monitoring interface

Monitoring the following information: 1.

Monitoring whether there is over-voltage, under-voltage or power down occurring in the -48V power voltage

2.

Monitoring whether the fan is normal

3.

Monitoring whether there are smoking signal, the signal of the temperature or the humidity exceeding the threshold, access control alarm signal and other Give the alarm about the monitored signal through the LED indicator, and report the signal to the OMP, other related functional boards or the background server through the RS485 interface

8





Isolated diode

Used to avoid mutual reverse flow of the 2 lines of input power

Connection terminal: It is required to lead in the -48V, GNDP, GND and -48VGND to the two filters on the top of the rack. The PWRDB is required to connect with the environment monitoring sensor, the fan shelf and the access control switch. In addition, the information monitored by the PWRD can be reported to the OMP, other related functional boards or the background server through the RS485 interface.

System power distribution cable and input/output cables of monitoring system are connected on the back through power distribution shelf, as shown in Figure 6.

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Chapter 1 MGW Cabinet

Overview Cross-Sectional Specifications View FIGURE 6 OUT LINE VIEW

Service Shelf ZXWN MGW service shelf adopts shielded shelf structure with modules inserted in the front and at the back oppositely. Table 10 shows the specifications of modules. TABLE 10 SPECIFICATIONS

Module

Height

PCB (Depth)

Front Module

8U

340mm

Back Module

6U

100mm

There are 17 slots for both front and back cards. Distance between two module slots is 25.4 mm. Other cables are led out from the panel of back module. Entire system has five kinds of front modules and corresponding back modules. Figure 7 shows cross-sectional view of service shelf.

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ZXWN MGW Media Gateway Hardware Description

Function of Each Part FIGURE 7 CROSS SECTIONAL VIEW

2

3

9

6

1

8U

4

6U

5 7 8

479.2

Table 11 shows the function of each part of the control shelf in Figure 7. TABLE 11 FUNCTION OF EACH PART

10

Number

Part Name

Function

1

Front board (8U)

Unit board

2

Rear board (6U)

Providing interfaces of HW and network cables, and other interfaces for the front board

3

-48V input filter

Filtering the -48V input power to ensure that the corresponding isolation and filter requirements can be met

4

Backboard reinforcing rib

Reinforcing the strength of the backboard

5

Metal guide latch

Acting as the guide rod of the location and direction when the board is being inserted

6

Plastic guide rail

Installed at both the upside and the underside of the shelf, and used to insert the board correctly

7

2-mm connector

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Chapter 1 MGW Cabinet

Number

TypeName Outline View Part Function

8

Backboard (4 mm)

The backboard is an important part of the shelf. The circuits in the same shelf are mutually connected through the printed wire on the backboard, which greatly reduces cables on the backboard and improves the reliability of the integrated equipment

9

DIP switch

Used to set the office number, rack number and shelf number

The MGW has four types of service shelf: level-1 switching shelf, circuit switching shelf, control shelf and resource shelf. Table 12 shows the function of each type of service shelf. TABLE 12 FUNCTION OF EACH TYPE OF SERVICE SHELF

Shelf Type

Function

level-1 switching shelf

The level-1 switching shelf is 40 Gbps core switching sub-system in the MGW system. It provides necessary message transfer channels between functional entities in the system and between external functional entities. In this way, it exchanges data such as timing, signaling, voice service, data service and offers corresponding QoS functions according to service requirements of different users

Circuit switching shelf

The circuit switching shelf is used for smooth capacity expansion of the circuit switching network with a capacity of 64 Kb~256 Kb

Control shelf

The control shelf is the control core of the MGW. It controls and manages the whole system

Resource shelf

The resource shelf provides external interfaces for processing various access modes and related lower-layer protocols. It also provides various resource processing modules for processing wireless protocols

Figure 8 and Figure 9 shows the outline view of service shelf.

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ZXWN MGW Media Gateway Hardware Description

FIGURE 8 OUTLINE VIEW 1 OF SERVICE SHELF

FIGURE 9 OUT-LINE VIEW 2 OF SERVICE SHELF

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Chapter 1 MGW Cabinet

Overview

Structure

Schematic Diagram

Fan Shelf Fan shelf is a universal module with height of 1U. It has functions of monitoring and automatic speed adjustment. There are 3 sets of unit modules in each fan shelf. Each set of unit modules contain 2 fans. Blind match implements on them. And it is convenient to perform field maintenance and live replacement. A closed air passage forms inside the cabinet, where the wind flows in from the bottom and flows out on the top. In this way, equipment cools down forcedly. Figure 10 shows the structure of fan shelf. FIGURE 10 STRUCTURE VIEW OF FAN SHELF

Bus Bar For convenient and flexible networking, power supply distribution and grounding of ZXWN MGW system transits via bus bar. There are two combined filters on top of the cabinet. Input power to the filters is through two external -48 V circuits. After filtering, it outputs to Power P. Filter in each shelf processes -48 V input power, ensuring that input power meets corresponding requirement for shielding and filtering. Figure 11 shows the schematic diagram of bus bar.

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ZXWN MGW Media Gateway Hardware Description

FIGURE 11 SCHEMATIC DIAGRAM

-48V

-48V GND

-48V

-48V GND

A 6:1

PE

-48V

-48V GND

-48V

-48V GND

PE

A -48V -48V GND -48V

-48V GND

-48V

-48V GND

-48V

PE

-48V GND

PE -48V

-48V GND

-48V

-48V GND

PE

-48V -48V GND -48V -48V

-48V GND

-48V

-48V GND

-48V GND

PE

PE

-48V

-48V GND

PE

The bus bar is located at the right side on the rear of the cabinet. It provides 6 terminal groups. From top to bottom, the first and sixth groups provide 4 connecting terminals each, which are connected to -48V, -48VGND, PE and GND respectively according to the signal sequence from top to bottom. The first group is connected with the power distribution shelf, providing power input for the bus bar; the sixth group only provides power to the third fan shelf; the second to the fifth groups provide 6 connecting terminals, which are connected to -48V, -48VGND, -48VDC, -48VGND, PE and GND respectively according to the signal sequence from top to bottom. These terminal groups provide power to each fan shelf and service shelf.

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Chapter 1 MGW Cabinet

Overview

Structural View

Typical Configuration

The PE interface is the protection ground.

Optical Cable Shelf Optical fibers under each shelf, lead from front chute to both sides of the cabinet. It leads out of cabinet for convenience and good outlook of shelf wiring. Figure 12 shows the optical cable shelf view. FIGURE 12 STRUCTURAL VIEW

Cabinet Description MGW provides interfaces such as Iu-CS, Nb, Ai/Di (PSTN/ISDN), A (2G-BSC), Mc, and NIF to the external Network Elements (NEs).It provides voice, multimedia and circuit-domain data services between PSTN and WCDMA, between 3G, 2G, and inside the WCDMA. It also supports extended VOIP/FOIP services. It can integrate SGW function to transfer signaling to other NEs such as MSCS. Figure 13 shows the typical configuration of ZXWN MGW cabinet.

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ZXWN MGW Media Gateway Hardware Description

Cabinet Assembly

Cabinet Wiring

FIGURE 13 CABINET TYPICAL CONFIGURATION

Figure 4 shows the ZXWN MGW full configuration assembly drawing. Rear outlet of ZXWN MGW cabinet is led out from back plug-in card panel. Then rear outlet goes downward to pass through insert and extraction space of back plug-in card, where it is bundled to back horizontal cable tray, and then enters vertical chute of cabinet from both sides and goes out of the cabinet, as shown in Figure 14.

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Chapter 1 MGW Cabinet

Numbering Table FIGURE 14 CABINET WIRING

5 4 1 6 3 7

100

2

8

3 100

2 1 3 100

2 3 100

2 1

Table 13 shows the names of different parts for Figure 7. TABLE 13 NUMBERING TABLE

Part Number

Part Name

1

Fan shelf

2

Cable shelf

3

Service shelf

4

Power-shelf

5

Blank filler panel

6

Shelf power filter

7

Back insert & extract wiring

8

Back horizontal cable tray

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ZXWN MGW Media Gateway Hardware Description

Communication Relationship

Temperature and Humidity

Dimensions

Figure 15 shows the communication relationship between ZXWN MGW shelves. FIGURE 15 COMMUNICATION RELATIONSHIP

Technical Indices Table 14 shows temperature and humidity requirements for ZXWN MGW. TABLE 14 OPERATING ENVIRONMENT

Temperature

Relative Humidity

Long-Term Operating Condition

Short-Term Operating Condition

Long-Term Operating Condition

Short-Term Operating Condition

10℃～30℃

0℃～45℃

30～～85～

20～～90～

Note: 



Measure internal work temperature and humidity of the equipment room at 1.5m height from the ground and 0.4m from the front of the rack, when there is no protection module at the front or back of the rack. Short-term work condition refers to working for no more than 48 successive hours and no more than 5 days accumulatively each year.

Table 15 shows the dimensions of single cabinet.

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Chapter 1 MGW Cabinet

Weight, Power Power Supply Consumption and Capacity TABLE 15 DIMENSIONS

Height (h)

Width (w)

Depth (d)

2000 mm

600 mm

800 mm

Table 16 shows the weight, power supply and capacity of ZXWN MGW system. TABLE 16 WEIGHT, POWER SUPPLY AND CAPACITY

Weight

Power Supply

System Capacity

310kg

-57 V to -40 V DC

2 Million Users

Table 17 shows the power consumption of ZXWN MGW system. TABLE 17 POWER CONSUMPTION

Resource Shelf

Service Shelf

Level-1 Switching Shelf

Circuit Switching Shelf

1000W

1000W

1800W

500W

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ZXWN MGW Media Gateway Hardware Description

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Introduction Overview

Chapter

Contents

2

MGW Shelves Overview This chapter describes the backplane, interfaces, DIP switches, and jumpers on the backplane of each shelf. Shelf combines hardware boards and modules through the backplane to form an independent unit. This chapter includes the following topics. TABLE 18 TOPICS IN CHAPTER 2

Topics

Page No.

Shelf Structure

21

Backplane

22

Control Shelf

23

Resource Shelf

27

Level-1 Switching Shelf

32

Circuit Switching Shelf

36

Shelf Structure ZXWN MGW control shelf front and back modules interleave oppositely, with height of 8U and 6U respectively. There are 17 module slots on both front and back modules. Distance between two module slots is 25.4 mm. Optical fibers lead out from the front module panel and other cables lead out from back module panel. Entire system has five kinds of front modules and corresponding back modules.

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Relationship Overview

Structural Diagram

Note: Refer to Figure 7 for control shelf structure and refer to Figure 8 and Figure 9 for control shelf outline.

Backplane Backplane is an important part of shelf. Circuit modules in shelf are connected through printed wiring on backplane, which greatly reduces cable routing on backplane and raises operational reliability of whole system. Backplane of control shelf is BCTC (Control Layer Backplane). Figure 16 shows the structural diagram of backplane. FIGURE 16 BACKPLANE STRUCTURE

Table 19 shows the relation between shelves and backplanes. T A B L E 1 9 R E L AT I O N B E T W E E N S H E LV E S A N D B A C K P L A N E S

Shelf

Backplane

Description

Control Shelf

BCTC

Backplane for control center

Resource Shelf

BUSN

Backplane of the universal service network

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Chapter 2 MGW Shelves

Shelf Overview

Configuration Backplane Description

Level-1 Switching Shelf

BPSN

Backplane of packet switched network

Circuit Switching Shelf

BCSN

Backplane of circuit switched network

Control Shelf Control shelf is control core of MGW and fulfills management and control over the whole system. The backplane of control shelf is BCTC, which provides 17 slots for the functional boards. The boards that can be configured and their configurations are shown in Table 20. TABLE 20 BOARD CONFIGURATION ON THE CONTROL SHELF

Logical Board Name

Physical Board Name

Configuration Description

UIMC

UIM

Each control shelf is fixedly configured with one pair of UIMC boards, which adopt 1+1 active/standby working mode

SMP

MPx86 or MPx86/2

One system is configured with at least one pair of SMP boards, which adopt 1+1 active/standby working mode

OMP

MPx86 or MPx86/2

One system is fixedly configured with one pair of OMP boards, which adopt 1+1 active/standby working mode

MNIC

Configured when the Mc interface adopts the IP bearer, taking charge of IP access and processing the SIGTRAN signaling

SIPI

SPB

SPB

Configured when the Ai and the A interface need be provided, or when the MGW acting as the signaling gateway needs to perform inter-office SS7 signaling transfer It is preferably configured in the resource shelf, and then in the control shelf

CHUB

CHUB

One multi-shelf system must be configured with one pair of CHUB boards, which adopt 1+1 active/standby working mode

CLKG

CLKG

One set of system must be

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ZXWN MGW Media Gateway Hardware Description

Description Rule forPhysical PrinciplesConfiguration and Architecture Logical Description Functions BoardInserting Name Board Name Boards

configured with one pair of CLKG boards, which adopt 1+1 active/standby working mode. The CLKG boards are generally configured in the circuit switching shelf. When there is no circuit switching shelf, they are configured in the control shelf

The rule for inserting boards to the slots in the control shelf is as follows: 







The slots 9 and 10 are the main control slots, where only the UIMC board can be inserted. These two slots are used to exchange information between boards and implement cascading with CHUB. The slots 1~8 and 11~12 are common slots. The OMP board is fixedly inserted to the slots 11 and 12, and the SMP and the SIPI boards are inserted to other slots. The slots 15 and 16 are control and switching center slots, where CHUB boards are inserted. The slots 13 and 14 are clock slots, where Clock Generator Boards (CLKG) or SMP boards can be inserted. BCTC is used to bear signaling processing module and all main control modules. It transits and processes media streams of control plane. Also, BCTC forms system distribution processing platform in multi-shelf equipment.

Figure 17 shows arrangements of modules in two layers of control shelf. FIGURE 17 MODULES ARRANGEMENTS

Following is the description for these modules. SIPIs in Slots 1 and 2 are used for concentrated access of Mc interface.

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SIPI

Chapter 2 MGW Shelves

MP

CLKG

UIM

Backplane Schematic CHUB SPB and Interfaces Diagram

SMP and OMP are the communication control centers. They use the same hardware: MPx86 module. Quantity of SMP modules depends on the configuration requirement. OMPs in Slots 11 and 12 offer the OMC function. SMPs offer functions such as call control and processing H.248 signaling. SMP implements call control and H.248 signaling processing. OMP module provides Ethernet interface from operation and maintenance center (OMC) to the background. CLKG module provides system clock signal. ZXWN MGW requires one pair of CLKG (clock generating module). CLKG configures in control shelf. CLKG is of the active/standby configuration, occupying slots 13 and 14 in control shelf. Corresponding back module is RCKG. In control shelf, two UIM occupies fixed slots 9 and 10. As the signaling switching center of control shelf, UIM use to implement information exchange between various modules and provide Ethernet channels to external resource shelves. SPB implements processing and switching of E1 signals. CHUB module (control concentrator) implements junction of control planes between multiple shelves. Note: Corresponding back module is with R as initial letter of its name. Figure 18 shows the schematic diagram of control shelf. FIGURE 18 SCHEMATIC DIAGRAM OF CONTROL SHELF

Figure 19 shows the rear view of BCTC backplane.

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ZXWN MGW Media Gateway Hardware Description

External Interfaces

DIP Switches and Jumpers

FIGURE 19 REAR VIEW OF BCTC

Fastening screw at the back panel Power connector DIP switch

Back board connector

Board locating pin

Table 21 shows the external interfaces of control shelf. TABLE 21 EXTERNAL INTERFACES

Interface ID

Purpose

Connection Relation

X0 to X1

Power socket

Connecting to bus-bar -48V, -48VGND and GNDP

Figure 20 shows the layout of BCTC.

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Chapter 2 MGW Shelves

Overview

Configuration

FIGURE 20 BCTC LAYOUT

S1

S2

S3

DIP switches (S1, S2 and S3) on BCTC are used to configure information about office, rack and shelf number. NOTE: 

OFF: Turn Downward



ON: Turn Upward

Resource Shelf Resource shelf provides external interfaces of MGW for processing various access modes and related lower-layer protocols. It also provides various resource processing modules for processing wireless protocols. The backplane of resource shelf is BUSN. The boards that can be configured and their configurations are shown in Table 22. TABLE 22 BOARD CONFIGURATION ON THE RESOURCE SHELF

Logical Board Name

Physical Board Name

Configuration Description The UIM board must be configured, which adopt 1+1 active/standby working mode.

UIMT, UIMU or UIMP

UIM

The UIMU board is usually configured in a single resource shelf; the UIMP board is usually configured in multiple shelves when the level-1 switching shelf is needed; the UIMT board is usually configured in multiple shelves when the circuit switching shelf is needed

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ZXWN MGW Media Gateway Hardware Description

Logical Board Name

Physical Board Name

Configuration Description Configured when the Nb interface adopts the IP bearer

IPI

MNIC

APBE

APBE

Configured when the LU, Nb and MC interfaces adopt the ATM bearer

IWFB

Configured when it is required to provide transparent/nontransparent synchronous asynchronous data service, and nontransparent circuit switching data bearer service

MRB

Configured when it is required to provide TONE and voice sending, DTMF number sending/receiving, MFC number sending/receiving, and conference telephone functions

IWFB

MRB

VTCD

VTCD

Configured when the IM-MGW needs to provide the Mb and Mn interfaces

The VMGW should be configured with at least two VTCD boards, which are used to encode the voice signal at the BSC and RNC sides, process the Iu-UP protocol, and encode the signal over IP. The GMGW should be configured with the VTCD board when the signal over TDM or IP needs to be encoded

DTEC, DTB

SDTB

SPB

DTEC

Configured when the Nb interface adopts the TDM bearer or when the Ai and A interfaces need to be provided, and used to implement E1 access

SDTB

Configured when the Nb interface adopts the TDM bearer or when the Ai and A interfaces need to be provided, and used to implement STM-1 access

SPB

Configured when the Ai and A interfaces need to be provided, or when the MGW acting as the signaling gateway needs to perform inter-office SS7 signaling transfer It is preferably configured in the resource shelf, and then in the control shelf

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Chapter 2 MGW Shelves

Architecture LogicalRule forPhysical Configuration Description BoardInserting Name Board Name CLKG

Boards

CLKG

The CLKG boards are generally configured in the circuit switching shelf. When there is no circuit switching shelf, they are configured in the control shelf. When the single shelf configuration is adopted (that means there is only one resource shelf), the CLKG board should be configured in the resource shelf. The CLKG boards adopt 1+1 active/standby working mode

SMP, OMP

MPx86 or MPx86/2

When the single shelf configuration is adopted (that means there is only one resource shelf), the MPx86 or MPx86/2 board should be configured in the resource shelf. There are two CPUs on the MPx86 or MPx86/2 board, so the board can be used as different logical boards

The rule for inserting boards to the slots in the resource shelf is as follows: 





 



UIM boards adopt the active/standby mode, and are fixedly configured in the slots 9 and 10. APBE and IPI boards can be configured in the slots 5~8 and 11~14. DTEC and DTB boards can be configured in other slots except the slots 9, 10, 15 and 16. OMP boards can be configured in the slots 11~14. CLKG boards adopt the active/standby mode, and are configured in the slots 15 and 16. MRB, SPB, SDTB, WFB, VTCD, INLP boards are configured in other slots except the slots 9 and 10.

Figure 21 shows the arrangements of modules in 2 layers control shelf.

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ZXWN MGW Media Gateway Hardware Description

Description

BUSN

UIMT

Principles IWFB VTCD APBE MRB SPB and IPI Functions

FIGURE 21 MODULES ARRANGEMENTS IN RESOURCE SHELF

1 V T C D

1 V T C D

2 V T C D

2 V T C D

R D T B

R D T B

3 D T E C

4 D T E C

R D T B

R D T B

3 D T E C

4 D T E C

5 V T C D

5 V T C D

6 V T C D

6 V T C D

R D T B

R D T B

7 D T E C

8 D T E C

R D T B

R D T B

7 D T E C

8 D T E C

BUSN subrack R R U U I I M M 1 1 9 10 11 U U A I I P M M B T T E BUSN subrack R R R U U M I I N M M I 1 1 C 9 10 11 U U I I I P M M I T T

R S P B 12 A P B E

13 V T C D

14 V T C D

15 S P B

16 M R B

17 I W F B

16 M R B

17

R S P B 12

13 V T C D

14

15 S P B

Following is the description for these modules. BUSN is universal service backplane. Multiple service processing modules can be inserted in it to form universal service processing subsystem. Configuration of UMITs is active/stand by, at slot 9 and 10. APBE provides access for Iu-CS and ATM access for Nb interface. IPI provides IP access for Nb interface. MRB provides 480 channels of media resources for circuit switching side, including tone/voice, DTMF detection/generation, MFC detection/generation, and conference call. VTCD is the TC unit which is configured in MGW system. It implements AMR voice coding/decoding and rate adaptation. It also processes Iu-UP protocol. IWFB offers circuit switching data bearer service for transparent/non-transparent synchronous or asynchronous data services and nontransparent fax service. SPB offers access for 16 E1 channels and processes MTP-2 protocol in SS7. Figure 22 shows the principles of the resource shelf.

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Chapter 2 MGW Shelves

Backplane and Interfaces

External Interfaces

FIGURE 22 PRINCIPLES OF RESOURCE SHELF

Backplane of resource shelf is BUSN. Figure 23 shows rear view of BUSN. FIGURE 23 REAR VIEW OF BUSN

shows external interfaces of resource shelf.

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ZXWN MGW Media Gateway Hardware Description

DIP Overview Switches and Jumpers T A B L E 2 3 E X T E R N A L I N T E R FA C E S O F R E S O U R C E S H E L F

Interface ID

Purpose

Connection Relation

X1–X2

Power socket

Connected to GND, -48V, -48VGND and GNDP on the bus-bar.

Figure 24 shows the layout of BUSN. FIGURE 24 LAYOUT OF BUSN

S1

S2

S3

DIP switches (S1, S2 and S3) on BUSN are used to configure information about office, rack and shelf number. NOTE: 

OFF: Turn Downward



ON: Turn Upward

Level-1 Switching Shelf Level-1 switching shelf includes following units: 

Interface units



User plane processing unit



Control plane processing unit Interface unit implements external logic interfaces. For data of external networks, the interface unit, IPI module, distinguishes control plane from user plane, and then sends

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Chapter 2 MGW Shelves

Configuration

Rule for Inserting Boards

Architecture

data to corresponding module of control plane and GLIQV module of user plane respectively. User plane processing unit terminates GTP-U protocol, restores user packets, and performs processing including NAT, tunnel processing and data encryption. It routes packets according to the contents and then forwards packets to GLIQV module of corresponding interface. Control plane processing unit undertakes route protocol processing, GTP-C processing, and network management and maintenance of the system. The backplane of level-1 switching shelf is BPSN. The boards that can be configured and their configurations are shown in Table 24. TABLE 24 BOARD CONFIGURATION ON THE LEVEL-1 SWITCHING SHELF

Logical Board Name

Physical Board Name

Configuration Description

PSN

PSN4V/8V

The PSN board must be configured, which adopts 1+1 active/standby working mode

UIMC

UIM

The UIMC board must be configured, which adopts 1+1 active/standby working mode

GLIQV

At least one GLI board must be configured, which is used to connect the packet data of the resource shelf

GLI

The rule for inserting boards to the slots in the level-1 switching shelf is as follows: 

UIMC boards are fixedly configured in the slots 9 and 10.



PSN boards are fixedly configured in the slots 7 and 8.



At least one GLI board should be configured, which can be inserted to the slots 1~6 and 9~14.

Figure 25 shows the arrangements of modules in Level-1 switching shelf.

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ZXWN MGW Media Gateway Hardware Description

Description

UIM

PSN

Principles Diagram and Functions

FIGURE 25 MODULES ARRANGEMENTS IN LEVEL-1 SWITCHING SHELF

BPSN subrack

1 G L I

2 G L I

3 G L I

4 G L I

5

6

7 P S N

8 P S N

9

10

11

12

13

14

R U I M 2 15 U I M C

R U I M 3 16 U I M C

17

Following is the description for these modules. UIM is of the active/standby configuration, occupying slots 15 and 16 fixedly. PSN is of the active/standby configuration, occupying slots 7 and 8 fixedly. Level-1 switching shelves fulfill interaction for all data of timing, signaling, voice service and data service. It offers corresponding QoS functions for different users according to service requirements. Level-1 switching shelves use high-speed switching backplanes. After making decision on routing and forwarding physical interface data, network processing units send data to switching network through high-speed switching connection of backplane to complete switching. Network processing units receive data from switching network to complete processing, and then send data through physical interfaces. Figure 26 shows the principles of level-1 switching shelf.

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Chapter 2 MGW Shelves

Backplane and Interfaces FIGURE 26 PRINCIPLES OF THE LEVEL-1 SWITCHING SHELF

Backplane of level-1 switching shelf is BPSN. Figure 27 shows the rear view of BPSN. FIGURE 27 REAR VIEW OF BPSN

Fastening screw at the back panel Power connector DIP switch

Board locating pin

Back board connector

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ZXWN MGW Media Gateway Hardware Description

Overview External Interfaces

DIP Switches and Jumpers

Configuration

Table 25 shows external interfaces of level-1 switching shelf. T A B L E 2 5 E X T E R N A L I N T E R FA C E S O F L E V E L - 1 S W I T C H I N G S H E L F

Interface ID

Purpose

Connection Relation

X1–X3

Power socket

Connected to GND, -48V, -48VGND and GNDP on bus-bar.

Figure 28 shows the layout of BPSN. FIGURE 28 LAYOUT OF THE BPSN

S1

S2

S3

DIP switches (S1, S2 and S3) on BPSN are used to configure information about office, rack and shelf number. NOTE: 

OFF: Turn Downward



ON: Turn Upward

Circuit Switching Shelf Circuit switching shelf is configured for smooth capacity expansion of circuit switching network with a capacity of 64 Kb– 256 Kb. The backplane of circuit switching is BCSN. The boards that can be configured and their configurations are shown in Table 26.

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Chapter 2 MGW Shelves

Rule for Inserting Boards

Architecture

TABLE 26 BOARD CONFIGURATION ON THE RESOURCE SHELF

Logical Board Name

Physical Board Name

Configuration Description The TSNB, ETSN or STSN boards must be configured, which adopt 1+1 active/standby working mode.

TSNB, ETSN or STSN

TSNB, ETSN or STSN

UIMC

UIM

TFI

TFI

The TSNB board provides 64K switching network; the ETSN board provides 128K switching network; the STSN board provides 256K switching network The UIMC boards must be configured, which adopt 1+1 active/standby working mode At least one pair of TFI boards should be configured, which are sued to connect the circuit data of the resource shelf. The TFI boards adopt 1+1 active/standby working mode

CLKG

CLKG

The CLKG boards must be configured, which adopt 1+1 active/standby working mode. Only one pair of CLKG boards are needed in one system

The rule for inserting boards to the slots in the circuit switching shelf is as follows:  





UIMC boards are fixedly configured in the slots 9 and 10. TSNB, ETSN or STSN boards are fixedly configured in the slots 5 and 7. One pair of TFI boards is configured in the slots 1 and 2 when the TSNB board with 64K switching network is configured; two pairs of TFI boards are configured in the slots 1~4 when the ETSB board with 128K switching network is configured. Each pair of TFI boards provides 8 cascade TDM optical interfaces, which can cascade 4 BUSNs. CLKG boards are fixedly configured in the slots 15 and 16.

Figure 29 shows the architecture of circuit switching shelf.

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37

ZXWN MGW Media Gateway Hardware Description

Description

UIM

TSNB

Backplane Principles and Interfaces Functions

F I G U R E 2 9 C O N F I G U R AT I O N O F C I R C U I T S W I T C H I N G S H E L F

1 T F I

2 T F I

3 T F I

4 T F I

5 T S N B

6

7 T S N B

8

R U I M 2 9 U I M C

R U I M 3 10 U I M C

11 T F I

12 T F I

13 T F I

14 T F I

R C K G 1 15 C L K G

R C K G 2 16 C L K G

17

Following is the description for these modules. UIM is of active/standby configuration, occupying slots 9 and 10 fixedly. TSNB is of active/standby configuration, occupying slots 5 and 7 fixedly. CLKG, UIM, TSNB and TFI are mandatory. Figure 30 shows the principles of circuit switching shelf. FIGURE 30 PRINCIPLES OF THE CIRCUIT SWITCHING SHELF

Backplane of level-1 switching shelf is BCSN. Figure 31 shows the rear view of BCSN.

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Chapter 2 MGW Shelves

External Interfaces

DIP Switches and Jumpers

FIGURE 31 REAR VIEW OF BCSN

Table 27 shows external interfaces of circuit switching shelf. T A B L E 2 7 E X T E R N A L I N T E R FA C E S O F C I R C U I T S W I T C H I N G S H E L F

Interface ID

Purpose

Connection Relation

X1–X2

Power socket

Connected to GND, -48V, -48VGND and GNDP on bus-bar.

Figure 32 shows the layout of BCSN.

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ZXWN MGW Media Gateway Hardware Description

FIGURE 32 LAYOUT OF THE BCSN

S1

S2

S3

DIP switches (S1, S2 and S3) on BCTC are used to configure information about office, rack and shelf number. NOTE:

40



OFF: Turn Downward



ON: Turn Upward

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Chapter 2

This page is intentionally blank.

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41

Introduction

Chapter

Contents

3

MGW Boards Overview This chapter describes various boards and modules in MGW cabinet. This chapter includes the following topics. TABLE 28 TOPICS IN CHAPTER 3

Topics

Page No.

MGW Board Specification

44

ATM Access Processing Board (APBE)

46

Clock Generator Board (CLKG)

52

Inter-Working Function Board (IWFB)

60

Main Processing Board (MPx86)

64

Main Processing Board (MPx86/2)

71

Media Resource Board (MRB)

78

Multi-Function Network Interface Board (MNIC)

82

Voice Transcoder Card (VTCD)

90

Universal Interface Module Board (UIM)

94

Signaling Processing Board (SPB)

105

Packet Switch Network Board (PSN4V/PSN8V)

112

Line Interface Board (GLIQV)

115

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43

Introduction

Architecture

Topics

Page No.

Digital Trunk Board (DTB/DTEC)

119

Control Plane Interconnection Board (CHUB)

127

TDM Switch Network Board (TSNB)

132

TDM Fiber Interface (TFI)

136

Power Distribution Board (PWRD)

140

Sonet Digital Trunk Board (SDTB)

144

Enhanced TDM Switch Network Board (ETSN)

150

Advanced TDM Switch Network Board (STSN)

155

MGW Board Specification A board is an integrated circuit component that fulfills certain functions. MGW boards are classified as follows: 

Intra-shelf interconnected board



Interface processing board



Protocol processing board



Main processing board

Intra-rack interconnected modules implements interconnection of modules in a shelf. Hardware formation of a board includes PCB, sub card, panel components (including indicators, extractor and EMC spring plate). Figure 33 shows structure of a typical module.

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Chapter 3 MGW Boards

Numbering Table

Board List

FIGURE 33 STRUCTURE OF A TYPICAL MODULE

2

3

1

4

Table 29 shows names of different parts used in Figure 21. TABLE 29 NUMBERING TABLE

Part Number

Part Name

1

Front PCB module (8U)

2

Components on front panel

3

Sub-card 1

4

Sub-card 2

Table 30 shows list of all circuit boards in MGW system: TABLE 30 NAMES AND ABBREVIATIONS OF ALL MODULES

Abbreviation

Description

APBE

ATM Process Board

CLKG

Clock Generator

MPx86/MPx86/2

Main Process Board

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ZXWN MGW Media Gateway Hardware Description

Overview Abbreviation

Functions Description

Working Principle

DTEC/DTB

Digital Trunk Board

VTCD

Voice Trans Coder

MRB

Media Resource Board

MNIC

Multi-service Network Interface Card

IWFB

Inter-Working Function Board

UIM

Universal Interface Module

SPB

Signaling Process Board

TSNB

TDM Switch Network Board

PSN4V/8V

IP Packet Switch Network Board

TFI

TDM Fiber Interface

SDTB

Sonet Digital Trunk Board

ETSN

Enhanced TDM Switch Network Board

ATM Access Processing Board (APBE) APBE module is used for ATM access processing. APBE board provides STM-1 interface and processes ATM adaptation and broadband No.7 base-layer signaling such as AAL5-SAR, SSCOP and SSCF, transmitting the MTP3B signaling packet via FE interface to signaling MP for processing. Through the interface provided by APBE board, MSCS can implement butt joint between RNC, MGW and Nb interface (when ATM adopts a signaling carrier). Following are the functions of APBE board: 



APBE provides 2*STM-1 ATM interface to meet networking requirements of two-channel STM-1.

APBE implements SAR of ATM AAL2 and AAL5 with line speed of 155 Mbps (2K VC, 8K CID).



APBE implements OAM function of ATM.



APBE processes SSCOP and SSCF sub-layers.



APBE provides cheap ATM interface IMA (IMA1.1, backward compatible with IMA1.0). Figure 34 shows working principle of APBE board.

46

ATM

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Chapter 3 MGW Boards

Panel FIGURE 34 PRINCIPLE OF APBE BOARD

8MHW*8

Optical module Optical module

AT M switching chip

AT M PHY chip

LOCAL BUS UTO PIA bus

STM -1

IMA chip

UTOPIA bus

STM -1

Circuit switching chip

CPU subcard

PCI bridge slice

Network processor subsystem 4× FE

PCI BUS

Ethernet PHY F E

APBE module panel is shown in Figure 35.

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ZXWN MGW Media Gateway Hardware Description

Indicators FIGURE 35 PANEL OF APBE BOARD

APBE ENUM RUN ACT

ALM EXCH RST

TX RX ACT1 SD1 TX RX ACT2 SD2 TX RX ACT3 SD3 TX RX ACT4 SD4

Table 31 shows the indicators of APBE board.

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Buttons

Layout

TABLE 31 INDICATORS OF APBE BOARD

Indicator

Color

Indication

Description

RUN

Green

Running Indicator

ALM

Red

Alarm Indicator

Flashing at 5Hz: Indicates board is power on Flashing at 1Hz: Indicates board is running normally On: Alarm exists on board. Off: No alarm exists on board. When board is inserted into a slot, ENUM indicator is on by default. When software detects ENUM signal and finds that extractor is closed, ENUM indicator is turned off to indicate the system to work.

ENUM

Yellow

Board Extraction Indicator

ACT

Green

Active/Standby Indicator

ACT1~2

Green

Optical Interface Activation Indicator

Indicates the currently active optical interface

SD1~2

Green

Optical Signal Indicator

Indicates whether the optical board has received optical signals

On: Board is active Off: Board is standby

Table 32 shows the list of buttons on APBE board. TABLE 32 BUTTONS IN APBE BOARD

Button Name

Description

EXCH

Perform active/standby changeover of APBE board

RST

Reset APBE board

Figure 36 shows the layout of APBE board.

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ZXWN MGW Media Gateway Hardware Description

DIP Switches and Jumpers

Technical Indices

External Interfaces

FIGURE 36 APBE BOARD LAYOUT

There is no DIP switch or jumper on APBE board.

Table 33 shows technical indices of APBE board. TABLE 33 TECHNICAL INDICES OF APBE BOARD

Technical Indices APBE provides 4*STM-1 ATM access interface to meet ATM networking requirements of four-channel STM-1. APBE implements SAR of ATM AAL2 and AAL5 with line speed of 155 Mbps.

Table 34 shows the external interfaces of APBE board. TABLE 34 EXTERNAL INTERFACES OF APBE BOARD

Interface 2 external ATM-1 optical interfaces

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Backboard

Interface Description

When reference clock extracts from APBE line interface, configure backboard RG1M1; else corresponding back board of APBE board is a blank panel. RIMG1 back board panel is shown in Figure 37. FIGURE 37

RGIM1 PANEL

8KOUT/DEBUG-23

RGIM1

The interface on RGIM1 is described as follows:

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ZXWN MGW Media Gateway Hardware Description

Precautions Overview

Functions

8KOUT/DEBUG-232 (RJ45 interface): used to output the 8K system clock to the UIM board, and provide the reference clock for the boards in the shelf. In addition, this interface can be used for debugging, and does not provide service functions in this case. Strictly observe operation regulations to prevent board from electrostatic damage.

Clock Generator Board (CLKG) CLKG is clock generator of ZXWN MGW system. CLKG has active/standby mode. Active and standby CLKG boards locks to same reference to implement smooth changeover. CLKG adopts a measure to filter out jitters to remove possible burrs or jitters of the clock during changeover. CLKG communicates with main processing unit through RS485. Also, it uses clock reference 8KHz frame synchronizing signal from trunk DTEC or SPB, or 2MHz/2Mbits signal from BITS system, or 8K (PP2S, 16CHIP) signal from GPSTM, or 8K clock signal from UIM as the local clock reference for synchronizing with upper-level office clock. For input reference, CLKG can provide an alarm signal for reference loss, and can also perform deterioration judgment for reference. Following are functions of CLKG board:  

Communicate with control console through RS485 bus. Allow selecting reference sources in the background or manually, including BITS, line (8K), GPS, local (level 2 or level 3); manual changeover can be screened by software; the sequence for selecting references manually: 2Mbits1--2Mbits2--2MHz1--2MHz2--8K1--8K2--8K3-NULL





 





52

Adopt loose coupling phase-locked system, working in 4 modes: CATCH, TRACE, HOLD and FREE. Output clock can be stratum 2 or stratum 3, implemented by changing constant temperature through crystal oscillator and software. Provide fifteen 16.384M, 8K and PP2S clocks to UIM. Capable of clock loss alarming and determining judgment for input reference. Active and standby changeover, including command changeover, manual changeover, fault changeover and reset changeover modes; BER effect on the system during maintenance changeover is less than 1%. Discontinuity between phases of two CLKG boards is less than 1/8 UI code element.

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Chapter 3 MGW Boards

Working Panel Principle 



Provide relative complete alarm function, including SRAM failure alarm, constant temperature trough alarm, reference and output clock loss alarm, reference determination alarm, reference frequency deviation exceeding standard alarm and phase-locked loop phase detection loss alarm. With these alarms, current working status and faults of clock board can be easily located. Clock maintenance is easy with VCXO, which provides frequency modulation knob to facilitate frequency modulation when axis frequency deviates to a certain range due to aging of quartz crystal

Figure 38 shows the working principle of CLKG board. FIGURE 38 PRINCIPLE OF CLKG BOARD

Figure 39 shows the panel of CLKG board.

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ZXWN MGW Media Gateway Hardware Description

Indicators FIGURE 39 CLKG BOARD PANEL

CLKG ENUM RUN ACT ALM EXCH RST CAT H TRACE KE P FRE

2Mbps12Mbps2 2MHz12MHz2 8K1 8K2 8K3 NUL

QUTD MANI MA N S L MA N E

Table 35 shows the indicators of CLKG board.

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Chapter 3 MGW Boards

TABLE 35 CLKG INDICATORS

Indicator

Color

Indicatio n

Description Blink: Board is normal

RUN

Green

Running indicator

Constantly on: Crystal is preheated Off: Board is not normal When board inserts into a slot, by default ENUM indicator is on. When software detects ENUM signal and finds that extractor is closed, ENUM indicator turns off to indicate the system to work.

ENUM

Yellow

Board extraction indicator

ACT

Green

Active/stan dby indicator

ALM

Red

Alarm indicator

Indicator is on when the board detects an error in SRAM and output clock loss.

CATCH:

Green

Catch indicator

Indicator is on when board is currently in cache status, such as having reference and unlocked.

TRACE:

Green

Trace indicator

Indicator is on when board is currently in trace status, such as having reference and locked.

KEEP

Green

Keep indicator

On: Indicates board has locked, but the midway reference is lost.

FREE

Green

Free running indicator

On: Indicates board has not locked with no reference, and in free running status.

On: Board is active Off: Board is standby

Indicator indicates the clock reference selected by CLKG. 2Mbps1

2Mbps2

2MHz1

2MHz2

Green

Reference indicator

Green

Reference indicator

On: Indicates second clock is 2M clock reference provided by BITS equipment transferred in HDB3 coding format.

Green

Reference indicator

On: Indicates first clock is 2M clock reference provided by BITS equipment transferred in TTL differential format.

Green

Reference indicator

On: Indicates second clock is 2M clock reference provided by BITS equipment transferred in TTL differential format.

On: Indicates first clock is 2M clock reference provided by BITS equipment transferred in HDB3 coding format.

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ZXWN MGW Media Gateway Hardware Description

Buttons Indicator Color

Layout Indicatio Description n On: Indicates the reference is line 8K reference provided by boards such as DTEC, APBE, SDTEC, and SPB.

8K1

Green

Reference indicator

8K2

Green

Reference indicator

On: Indicates the reference is 8K clock reference provided by GPS.

8K3

Green

Reference indicator

On: Indicates the reference is 8K clock reference sent by UIM.

NULL

Green

Reference indicator

On: Indicates that there is no external reference available.

Red

Reference determinat ion indicator

On: Reference is pointed to stratum 3 and below

Green

Indicator for allowing manually selecting reference

QUID

MANI

On: Allow manual selection of reference Off: Manual selection of reference are not allowed

Table 36 shows list of buttons on CLKG board. TABLE 36 BUTTONS

Button Name

Description

EXCH

Perform active/standby changeover of CLKG

RST

Reset CLKG

MANSL

Manually select external 8K clock reference

MANEN

Enable manual selection of external 8K clock reference

Figure 40 shows the layout of CLKG board.

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DIP Switches and Jumpers FIGURE 40 CLKG LAYOUT

X60

X50

X48

X46 X47 X40 X41

X43 X42

X44 X54X53 X56 X55 X45

CLKG has the following jumpers: 

X40 to X41, X44 to X45: Selection of the first 2 Mbps and 2 MHz matching impedance of BITS clock: When pin 1 and pin 2 are connected, it means the matching impedance is 75 Ω. When pin 2 and pin 3 are connected, it means the matching impedance is 120 Ω.



X42 to X43, X46 to X47: Selection of the second 2 Mbps and 2 MHz matching impedance of BITS clock: When pin 1 and pin 2 are connected, it means the matching impedance is 75 Ω. When pin 2 and pin 3 are connected, it means the matching impedance is 120 Ω.



X53 to X56: Grounding protection jumper of coaxial cable jacket for inputting two 2 Mbps and 2 MHz clocks: When pin 1 and pin 2 are connected, it means the cable jacket connects to the protection ground.



X48, X50: For debugging use; disconnected in other time.



X60: Jumper of RS485 connection relation.

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External Interfaces

Technical Indices

Backboards

Note: 



In debugging, when data downloaded through the serial port of a computer, a jumper should place between pins 3 and 5, and between pins 4 and 6. During communication with the background through RS485, a jumper should place between pins 1 and 3, and between pins 2 and 4.

Table 37 shows external interfaces of CLKG board. TABLE 37 EXTERNAL INTERFACES OF CLKG

Interface

Purpose

15 sets of 8K/16M/PP2S

System clock output interfaces

10 sets of 8K/32M/64M

System clock output interfaces

1~2 sets of 8K

Reference input interfaces for DTEC, SPB, APBE, SDTEC and other boards

1 set of 8K

Reference input interface for GPS board

1 set of PP2S and 16CHIP

Reference input interface for GPS board

2 sets of 2Mbps and 2MHz

Reference clock input interface

Following are technical indices of CLKG board: 

Provides fifteen 16.384M, 8K and PP2S clocks for UIM.



Provides ten 32M, 64M and 8K clocks for T network.



Supports hot swapping.

Following are backboards of CLKG board, as shown in Figure 41.

58



RCKG1



RCKG2

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Interface Description FIGURE 41 BACK BOARDS

CLKOUT

CLKOUT

PP2S/16CHIP

2Mbps/2MHz

CLKOUT

8KIN 2

8KIN 1

CLKOUT

RCKG2

CLKOUT

RCKG1

The interfaces on RCKG1 and RCKG2 are described as follows: 

CLKOUT (DB44 interface): Provides 3 groups of 8K, 16M and PP2S system clock output interfaces, which are generally output to the UIM board. The RCKG1 and RCKG2 have totally 5 CLKOUT interfaces, which mean that the CLKG board can provide at most 15 groups of 8K/16M/PP2S system clock output interfaces.

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ZXWN MGW Media Gateway Hardware Description

Precautions Overview







Working Principle

Panel

8KIN1 and 8KIN2 (RJ45 interface): It is the input interface of the 8K reference clock, which can introduce the 8K reference clock provided by DTEC, SPB, APBE, SDTEC, GPS and other boards. 2Mbps/2MHz (DB9 interface): It can introduce two lines of 2Mbps or 2MHz clock reference. PP2S/16CHIP (RJ45 interface): Provides the input interface of the P2S/16CHIP reference clock of the GPS.

Therefore, the CLKG board can provide the following external interfaces:  





15 groups of 8K/16M/PP2S system clock output interfaces; 2 groups of input interfaces of the 8K reference clock provided by DTEC, SPB, APBE, SDTEC, GPS and other boards; 2 groups of interfaces;

2Mbps

and

2MHz

reference

clock

input

1 group of P2S/16CHIP reference input interfaces of the GPS module.

Strictly observe operation regulations to prevent board from electrostatic damage.

Inter-Working Function Board (IWFB) IWFB offers circuit switching data bearer service for transparent/non-transparent, synchronous or asynchronous data services and nontransparent fax service. IWFB processes circuit-domain data service. Uplink data may come from HW interface or Ethernet interface, depending on system configuration. If uplink data comes from HW interface, DSP processes the data link protocol of wireless network, implements rate adaptation, and converts other protocols. For modem/fax service, after processing data, the DSP sends it to main control processor MPC8250 (data can also directly sent to MPC8250 without passing through DSP); MPC8250 then sends data to M80310 for data/fax modem processing; after modulation, 64 Kbps data is generated and then sent to the PSTN through DTU. For ISDN service, after terminating the RLP, CPU sends data again to DSP; DSP then adapts data into ISDN service flow generates ISDN service flow and transfers it to the ISDN through DTB/SDTB. Figure 42 shows the panel of IWFB.

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FIGURE 42 IWFB PANEL

IWFB E NUM RUN A CT A L M

RS T

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ZXWN MGW Media Gateway Hardware Description

Indicators

Button

Layout

There are 4 indicators on the IWFB panel, as shown in Table 38. TABLE 38 INDICATORS ON THE IWFB PANEL

Indica tor

Color

Meaning

RUN

Green

Running Indicator

ALM

Red

Alarm Indicator

ENUM

Yellow

Board Extraction Indicator

ACT

Green

Active/Stan dby indicator

Description Flashing at 5Hz: Indicates board is power on Flashing at 1Hz: Indicates board is running normally On: Alarm exists on board. Off: No alarm exists on board. When board is inserted into a slot, ENUM indicator is on by default. When software detects ENUM signal and finds that extractor is closed, ENUM indicator is turned off to indicate the system to work. On: Board is active Off: Board is standby

There is one button RST on IWFB panel which is used for resetting IWFB board. Figure 43 shows the layout of IWFB.

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DIP Switches and Jumpers

External Interfaces

FIGURE 43 IWFB LAYOUT

There is no Dip switch or Jumper in IWFB board. IWFB boards have the following external interfaces. 







Backplane can connect up to 4 pairs of 8 MHz HW cables to resource processing part on the backplane through TDM switching network. In this way, backplane ensures the flexible allocation of timeslots to facilitate the future expansion. Data flow in TDM side synchronizes with 8 kHz and 16 MHz clock from the UIM. Backplane connects with one 10/100M control flow Ethernet for downloading CPU and DSP versions and modem firmware, connecting voice channels, and transferring signal flow to be processed inside backplane and the commands and parameters sent by system for controlling, configuring, maintaining, and managing the backplane. Backplane connects with one 10/100M media flow control Ethernet for bearing circuit-domain data services from the switching Ethernet. IWFB reserves one set of RS-485 bus for connecting with UIM.

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ZXWN MGW Media Gateway Hardware Description

Overview Technical Indices 





Backboard

Precautions

Functions of the the OMP SMP board

IWFB retrieves cabinet number, shelf number, and slot number from backplane. IWFB sends its reset report to UIM and accepts the hardware reset signal from the UIM. IWFB can implement neighboring board.

HW

mutual-lock

logic

with

the

Baseband modem supports V series protocols and highest rate in V.90. It also supports G3 fax service based on T.30 fax protocol and two kinds of rate: V.17 (14.4kbit/s) and V.34 (28.8kbit/s). It also supports ISDN adaptation service at rate of up to 64kbit/s. IWFB supports at least 60 channels of data services. It can support up to 240 channels of data services when configured with sub-cards. IWFB has no backboard. Strictly observe operation regulations to prevent board from electrostatic damage.

Main Processing Board (MPx86) In MGW system, MPX86 board implies the control unit for SMP and OMP. For UMTS, MPx86/2 board handles the protocols. MPx86/2 also performs system control, maintenance function and processing network management protocol. The MPX86 board has powerful processing ability. Configured with 1G memory, the MPX86 board also provides many external interfaces such as IDE, 10/100M NIC, RS485, RS232 and USB interfaces. The MPx86 board uses the standard PCI bus to connect with other peripheral equipments and supports MP active/standby switchover function. It has control register and data register to set the functions of the board through the main control software and exchange the working status data. When the MPX86 board is used as the SMP board, it mainly implements call control, data caching, broadband signaling, resource and protocol processing. The MPX86 board has powerful processing ability. Configured with 1G memory, the MPX86 board also provides many external interfaces such as IDE, 10/100M NIC, RS485, RS232 and USB interfaces. The MPx86/2 board uses the standard PCI bus to connect with other peripheral equipments and supports MP active/standby switchover function. It has control register and data register to set the functions of the board through the main control software and exchange the working status data.

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Working Panel Principle When the MPX86 board is used as the OMP board, it mainly takes charge of the global process and implements the control functions (including the operation and maintenance agent) related with the operation and maintenance of the whole system. Connected with the OMC through the 100M Ethernet port, the OMP board implements the isolation between the internal network section and the external one. The OMP also acts as the operation and maintenance core of the MSCS, directly or indirectly monitoring and managing the boards in the system. MPx86 board consists of two sets of designed CPU systems such as CPU_A and CPU_B. These CPU systems are independent of each other. CPU_A is the primary control and manage boards. Apart from these CPU systems, MP board also provides Ethernet switching chips that offers control streams, media streams, active/standby and OMC Ethernet to peripheral. Figure 44 shows the principles of MPx86 board.

FIGURE 44 PRINCIPLES OF MPX86 BOARD

Figure 45 shows the panel of MPx86 board.

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ZXWN MGW Media Gateway Hardware Description

Indicators FIGURE 45 MPX86 PANEL

OMP SMP EN UM1 RUN1 ENUM1 RUN1 ACT1 ALM1 ACT1 ALM1 EXCH1

EXCH1

RST

RST

ENUM2RUN2 ENUM2RUN2 ACT2 ALM2 ACT2 ALM2 EXCH2

EXCH2

OMC1 OMC2 HD1 HD2 HD1 HD2

USB1USB2 USB1 USB 2

Table 39 shows indicators of MPx86 board.

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Buttons TABLE 39 MPX86 INDICATORS

Indicator

ALM_1

Color

Indication

Description On: Alarm exists on board

Red

Alarm indicator of CPU subsystem A

Off: No alarm exists on board Flashing at 5Hz: Indicates board is power on

RUN_1

ACT_1

ENUM_1

Green

Green

Yellow

Run indicator of CPU subsystem A

Active/standb y indicator of CPU subsystem A

Board extraction indicator of CPU subsystem A

ALM_2

Red

Alarm indicator of the CPU subsystem B

RUN_2

Green

Run indicator of the CPU subsystem B

Green

Active/standb y indicator of the CPU subsystem B

ACT_2

ENUM_2

Yellow

Board extraction indicator of the CPU subsystem B

Flashing at 1Hz: Indicates board is running normally Continuously flashing at 5Hz: Indicates power failure on board On: Board is active Off: Board is standby When board inserts into a slot, by default ENUM indicator is on. When software detects ENUM signal and finds that extractor is close, ENUM indicator turns off to indicate the system to work. On: Alarm exists on board

If indicator flashes slowly, then board is running normally.

Off: No alarm exists on board

On: Board is active Off: Board is standby When board inserts into a slot, by default ENUM indicator is on. When software detects ENUM signal and finds that extractor is close, ENUM indicator turns off to indicate the system to work.

Table 40 shows list of buttons on MPx86 board.

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ZXWN MGW Media Gateway Hardware Description

Layout

DIP Switches and Jumpers

TABLE 40 BUTTONS IN MPX86 BOARD

Button Name

Description

EXCH1

Perform active/standby changeover of System A

EXCH2

Perform active/standby changeover of System B

RST

Reset MPx86

Figure 46 shows the layout of MPx86 board. FIGURE 46 MPX86 LAYOUT

X6

S1 1234

ON

X28

X5

X27

There is one DIP switch on the MPx86 board: 

S1 used for debugging.

power-on

configuration

during

software

There are four jumpers on the MP module: 

X6 used to set jumpers for CMOS of CPU subsystem A. 1-2: Subsystem A is working normally. 2-3: Clear CMOS information of subsystem A.



X5 is used to set jumpers for CMOS of CPU subsystem B; 1-2: Subsystem B is working normally.

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External Interfaces

Technical Indices

Backboard of the SMP Board

Backboard of the SMP Board

2-3: Clear CMOS information of subsystem B. 

X28 and X27 are used at POSTSET [1, 0] pin level of the FPGA; during short circuit, the value is ‘0’ and during disconnection, it is ‘1’. 10: For debugging mode, the indicator of port 80 of subsystem A is on. 11: For debugging mode, the indicator of port 80 of subsystem B is on. 00: For normal mode, the 06H indicator of register A is on. 01: For normal mode, the 06H indicator of register B is on.

Table 41 shows external interfaces of MPx86 board. TABLE 41 EXTERNAL INTERFACES OF MPX86 BOARD

Interface

Purpose

Two OMC Ethernet interfaces of 100M to peripheral.

MPx86 as OMP

When MPx86 serves as a CMP, it can process 100 calls per second under the control of H.248. When MPx86 serves as an SMP, it can process 2 Mbps–4 Mbps SS7 flow. When the MPx86 board is used as the SMP board, its corresponding backboard is an empty panel. When the MPx86 board is used as the OMP board, its corresponding backboard is the RMPB board, as shown in Figure 47.

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ZXWN MGW Media Gateway Hardware Description

Interface Description FIGURE 47 RMPB BOARD

DEBUG2- 32

DEBUG1-232

RS232

PD485

GPS485

OMC2

OMC1

RMPB

The interfaces on the RMPB board are described as below: 

70

OMC1 and OMC2 (FE interface): used to connect with the maintenance system of the background.

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Precautions Overview









Functions of the SMP board

Functions of the OMP board

DEBUG1-232 and DEBUG2-232: used for test and providing no service function. PD486 (RJ45 interface): used to connect with the RS485 interface of the PWRDB on the power distribution shelf, and receive the power, fan, access control and environment alarm information monitored by the PWRD. GPS485 (RJ45 interface): used to connect and communicate with the GPS module. RS232 (RJ45 interface): used to remotely access the OMC.

Strictly observe operation regulations to prevent board from electrostatic damage.

Main Processing Board (MPx86/2) In MGW system, MPX86 board implies the control unit for SMP and OMP. For UMTS, MPx86/2 board handles the protocols. MPx86/2 also performs system control, maintenance function and processing network management protocol. In the MGW system, the MPX86/2 board can be used as two kinds of functional units: OMP board and SMP board. The MPX86/2 board has powerful processing ability. Configured with 2G memory, the MPX86/2 board also provides many external interfaces such as IDE, 10/100M NIC, RS485, RS232, USB interfaces. The MPx86/2 board uses the standard PCI bus to connect with other peripheral equipments and supports MP active/standby switchover function. It has control register and data register to set the functions of the board through the main control software and exchange the working status data. When the MPX86/2 board is used as the SMP board, it mainly implements bearer control functions and the processing of each kind of signaling. When the SGW is configured in the MGW, signaling conversion can be implements, such as interconnection between the SCN domain and the IP domain. In the MGW system, the MPX86/2 board can be used as two kinds of functional units: OMP board and SMP board. The MPX86/2 board has powerful processing ability. Configured with 2G memory, the MPX86/2 board also provides many external interfaces such as IDE, 10/100M NIC, RS485, RS232, USB interfaces. The MPx86/2 board uses the standard PCI bus to connect with other peripheral equipments and supports MP active/standby switchover function. It has control register and data register to set the functions of the board through the main control software and exchange the working status data.

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Working Panel Principle When the MPX86/2 board is used as the OMP board, it mainly takes charge of the global process and implements the control functions (including the operation and maintenance agent) related with the operation and maintenance of the whole system. Connected with the OMC through the 100M Ethernet port, the OMP board implements the isolation between the internal network section and the external one. The OMP also acts as the operation and maintenance core of the MSCS, directly or indirectly monitoring and managing the boards in the system. MPx86/2 board consists of two sets of designed CPU systems such as CPU_A and CPU_B. These CPU systems are independent of each other. CPU_A is the primary control and manage boards. Besides CPU units, there are many other units such as power unit (supplies power for the whole board), control stream controller, media stream controller, OMC Ethernet controller, Master/Slave Ethernet controller, Power management 485 interface, GPS 485 interface and UIM communication 485 interface. Figure 48 shows working principles of MPx86/2 board. FIGURE 48 MPX86/2 BOARD WORKING PRINCIPLE

MPx86/2 board is used as SMP and OMP logical boards, based on requirements of GGSN system. Panels of SMP and OMP boards are shown in Figure 49.

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FIGURE 49 PANEL OF SMP AND OMP BOARDS

OMP SMP ENUM1 RUN1 ENUM1 RUN1 ACT1 ALM1 ACT1 ALM1 EXCH1

EXCH1

RST

RST

ENUM2RUN2 ENUM2RUN2 ACT2 ALM2 ACT2 ALM2 EXCH2

EX CH2

OMC1 OMC2 HD1 HD2 HD1 HD2

USB1USB2 USB1 USB2

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ZXWN MGW Media Gateway Hardware Description

Indicators

Table 42 shows indicators of MPx86/2 board.

TABLE 42 INDICATORS OF MPX86/2 BOARD

Indicator

ALM_1

Color

Indication

Description On: Alarm exists on board

Red

Alarm indicator of CPU subsystem A

Off: No alarm exists on board Flashing at 5Hz: indicates board is power on

RUN_1

ACT_1

Green

Run indicator of CPU subsystem A

Active/standb y indicator of CPU subsystem A

Flashing at 1Hz: indicates board is running normally Continuously flashing at 5Hz: indicates power failure on board On: Board is active Off: Board is standby When board is located in the shelf, indicator is ON by default. During power on process, before the software startup, ENUM is ON. As soon as the software detects the spanner is closed, it will set ENUM to OFF. It means the system is running. If the board is pulled out, when the spanner is released, it will send an ENUM interrupt signal to CPU. Then CPU will switch to out-of-service status and set ENUM indicator to ON. Then the board is ready to be pulled out. (If the ENUM is OFF, the board cannot be pulled out, Otherwise it will affect the service) If the board is not pulled out and the spanner is closed again, the software will detect the spanner status and set the ENUM to OFF.

Yellow

Board extraction indicator of CPU subsystem A

On: Alarm exists on board

ALM_2

Red

Alarm indicator of the CPU subsystem B

RUN_2

Green

Run indicator of the CPU subsystem B

If indicator flashes slowly, then board is running normally.

ENUM_1

74

Green

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Off: No alarm exists on board

Chapter 3 MGW Boards

Buttons Indicator Color Green ACT_2

ENUM_2

Yellow

External Description Indication Interfaces

Active/standb y indicator of the CPU subsystem B

Board extraction indicator of the CPU subsystem B

On: board is active Off: board is standby When the board is located in the shelf, indicator is ON by default. During the power on process, before the software startup, ENUM is ON. As soon as the software detect the spanner is closed, it will set ENUM to OFF. It means the system is running. If the board is pulled out, when the spanner is released, it will send an ENUM interrupt signal to CPU. Then CPU will switch to out-of-service status and set ENUM indicator to ON. Then the board is ready to be pulled out. (If the ENUM is OFF, the board cannot be pulled out, Otherwise it will affect the service) If the board is not pulled out and the spanner is closed again, software will detect the spanner status and set ENUM to OFF.

Table 43 shows list of buttons on MPx86/2 board. TABLE 43 BUTTONS IN MPX86/2 BOARD

Button Name

Description

EXCH1

Perform active/standby changeover of System A

EXCH2

Perform active/standby changeover of System B

RST

Reset MPx86/2

Table 44 shows external interfaces of MPx86/2 board. TABLE 44 EXTERNAL INTERFACES OF MPX86/2 BOARD

Interface

Purpose

2 OMC Ethernet interfaces of 100M to peripheral.

MPx86/2 as OMP

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ZXWN MGW Media Gateway Hardware Description

Technical Indices

Backboard of the SMP Board

Backboard of the SMP Board

When MPx86 boards are used as SMP board, it will handle 2~4 Mbps signal stream. When the MPx86/2 board is used as the SMP board, its corresponding backboard is an empty panel. When the MPx86 board is used as the OMP board, its corresponding backboard is the RMPB board, as shown in Figure 50.

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Interface Description FIGURE 50 RMPB BOARD

DEBUG2- 32

DEBUG1-232

RS232

PD485

GPS485

OMC2

OMC1

RMPB

The external interfaces on the RMPB board are described as below:

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ZXWN MGW Media Gateway Hardware Description

Precautions Overview











Functions

Working Principle

OMC1 and OMC2 (FE interface): used to connect with the maintenance system of the background. DEBUG1-232 and DEBUG2-232 (RJ45 interface): used for test and providing no service function. PD486 (RJ45 interface): used to connect with the RS485 interface of the PWRDB on the power distribution shelf, and receive the power, fan, access control and environment alarm information monitored by the PWRD. GPS485 (RJ45 interface): used to connect and communicate with the GPS module. RS232 (RJ45 interface): used to remotely access the OMC.

Strictly observe operation regulations to prevent electrostatic damage to large scale integrated circuits on the board.

Media Resource Board (MRB) MRB consists of two relatively independent modules: 

Media resource module



Circuit trunk module.

MRB has the following functions: 









It provides 480 channels of tone/voice, DTMF detection/generation, MFC detection/generation, and conference call. 3–120 parties can flexibly configured for each group. For each service function, 120 channels constitute one basic sub-element. Software can be configured by taking one subelement as the unit. It reports the number receiving results of TMF and MFC to control center through control flow Ethernet. Circuit-domain module provides bidirectional bridging function for 480–1440 channels between circuit switching side and packet switching side. That is, it adapts the PCM code flow from the circuit switching side into PCM/UDP/IP packets and sent them to the packet switching side; it also decodes PCM code flow from PCM/UDP/IP packets from the packet switching side and then sent the flow to the circuit switching side. Interfaces include two 100M media flow Ethernet interfaces, two 10M control flow Ethernet interfaces, two 8 Mbps HW interfaces, one RS485 interface, one RS232 interface.

Figure 51 shows the working principle of MRB board.

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Description

Panel

FIGURE 51 MRB WORKING PRINCIPLES

MRB can be divided into two modules according to internal function: 

Media resource module



Circuit trunk module

It consists of five functional parts: 

Control part



Switching part



Resource processing part



Circuit trunk part



Global logical combination part.

Through 100M control flow Ethernet links, the control core receives and processes the commands from MP on UIM, controls and coordinates the working state of peripheral chips such as DSP and DX2K, sends the resource timeslot processing results of DSP back to the DSP. Universal resource processing platform consists of four independent DSP sub-elements with the same configuration. Each sub-element can process 120 channels of resources of the same type. Resources include tone/voice, DTMF detection/generation, MFC detection/generation, and conference call. Figure 52 shows the panel of MRB.

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ZXWN MGW Media Gateway Hardware Description

FIGURE 52 PANEL OF THE MRB

M RB ENUM RUN ACT ALM

RST

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Indicators

Button

Layout

There are 4 indicators on the MRB panel, as shown in Table 45. TABLE 45 INDICATORS ON THE MRB PANEL

Indica tor

Color

Meaning

RUN

Green

Running Indicator

ALM

Red

Alarm indicator

ENUM

Yellow

Board Extraction Indicator

ACT

Green

Active/Stan dby indicator

Description Flashing in 5Hz: indicates board is power on Flashing in 1Hz: indicates board is running normally On: Alarm exists on board. Off: No alarm exists on board. When board is inserted into a slot, by default ENUM indicator is on. When software detects ENUM signal and finds that extractor is closed, ENUM indicator is turned off to indicate the system to work. On: board is active Off: board is standby

There is one button RST on MRB panel which is used for resetting MRB board. Figure 53 shows the layout of MRB.

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ZXWN MGW Media Gateway Hardware Description

DIP Switches, Overview Jumpers

Technical Indices

Backboard

Precautions

FIGURE 53 MRB LAYOUT

There is no DIP switch or jumper on the MRB. MRB provides no external interface. 



It provides 480 channels of tone/voice, DTMF detection/generation, MFC detection/generation, and conference call. 3–120 parties can be flexibly configured for each group. For each service function, 120 channels constitute one basic sub-element. Software can be configured by taking a subelement as the unit.

MRB has no backboard. Strictly observe operation regulations to prevent electrostatic damage to large scale integrated circuits on the board.

Multi-Function Network Interface Board (MNIC) As a network interface board of equipment, MNIC provides physical interfaces to external packet based networks (IP/ATM). To transfer data packets into the system, MNIC processes the underlying protocols. These protocols are PPP protocols for AAL5

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Functions of the IPI Board

Functions of the SIPI Board

and POS interfaces of ATM. Then, it restores IP packets and sorts them. After the process ends, it exchanges data to main processing unit of the system for further processing through control Ethernet interface of the resource box. According to the destination address routes of IP packets, MNIC transmits service flow data of user planes to corresponding internal processing boards through media stream switch Ethernet. MNIC also performs protocol processing such as IP data filtering and NAT translation to assure IP communication inside the equipment. Two MNIC boards are configured as 1+1 backup or load sharing. In the ZXWN MGW system, the MNIC board can be used as the SIPI and IPI logical boards. The working mode is 1+1 backup or load sharing when the MNIC board is used as the IPI board. The IPI board provides the physical interface to the external IP networks. The IPI board performs the bottom-layer IP protocol processing first for the IP data entering the system. The IPI board forwards the service flow data of the user plane to the corresponding processing board through media flow switching Ethernet according to the destination address route of the IP data packet. In addition, the IPI board also can implements the IP data filter, NAT conversion and other protocol processing as required to protect the IP communication inside the equipment. Following are the functions of SIPI board: 

Providing 1×100M control flow Ethernet interfaces



Providing 1×100M Ethernet data backup channels



Providing RS485 backup control channel interfaces



Supports 1+1 active/standby logical control of the board



Providing at most 4 FE interfaces for the external network.

In the ZXWN MGW system, the MNIC board can be used as the SIPI and IPI logical boards. The working mode is 1+1 backup or load sharing when the MNIC board is used as the SIPI board. When used as the SIPI board, the MNIC board provides the bottom-layer IP interface of the H248 signaling of the Mc interface. The SIPI board performs the bottom-layer IP protocol processing first for the packet data entering the system, and sends the SCTP packet to the home SMP through the control Ethernet port of the resource shelf. The SMP performs the processing of the SCTP, M3UA and other upper-layer protocols. The SIPI board also can implements the IP data filter, NAT conversion and other protocol processing as required to protect the IP communication inside the equipment. Following are the functions of SIPI board: 

Providing 1×100M control flow Ethernet interfaces



Providing 1×100M Ethernet data backup channels

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Working Panels Principle 

Providing RS485 backup control channel interfaces



Supports 1+1 active/standby logical control of the board



Providing at most 4 FE interfaces for the external network.

MNIC board consists of many parts such as network processor systems, physical interface parts and CPU systems. CPU units are implemented in the form of daughter cards. Data transmission between daughter cards and network processor systems is done through PCI bus and internal bus. External devices connecting to PCI bus of the network processor include CPU daughter cards and Ethernet chips. Co-processors are connected on standard mode of daughter cards. One of two Ethernet chips serves as a data backup channel. If a CPU daughter card exists, then no need to install the data channel and it is provided by CPU. If a CPU daughter card does not exist, use the channel to back up active/standby data. Other Ethernet chip serves as a control flow channel to communicate with the UIM. In addition, it can be use to debug and download codes. Figure 54 shows the working principle of MNIC board. FIGURE 54 MNIC BOARD WORKING PRINCIPLE

In MSCS, MNIC board is used as IPI logical board. Figure 55 shows the panel of IPI board.

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FIGURE 55 PANEL OF MNIC BOARD

IP ENUM RUN ACT ALM EXCH RST

LINK1 LINK2 LINK3 LINK4

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Indicators

Table 46 shows indicators of MNIC board.

TABLE 46 INDICATORS OF MNIC BOARD

Indicator

Indication

RUN

Green

Run indicator

ACT

Green

Active/ Standby indicator

ALM

Red

Alarm indicator

ENUM

LINK1

LINK2

LINK3

LINK4

86

Color

Description Flashing at 5Hz: indicates board is power on. Flashing at 1Hz: indicates board is running normally. On: Board is active. Off: Board is standby. On: Alarm exists on board. Off: No alarm exists on board

When board inserts into a slot, by default ENUM indicator is on. When software detects ENUM signal and finds that extractor is closed, ENUM indicator turns off to indicate the system to work.

Yellow

Board extraction Indicator

Green

Status indicator of external 100M access network port 1

On: External 100M access network port 1 is connected.

Green

Status indicator of external 100M access network port 2

On: External 100M access network port 2 is connected.

Green

Status indicator of external 100M access network port 3

On: External 100M access network port 3 is connected.

Green

Status indicator of external 100M access network port 4

On: External 100M access network port 4 is connected.

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Off: External 100M access network port 1 is not connected.

Off: External 100M access network port 2 is not connected.

Off: External 100M access network port 3 is not connected.

Off: External 100M access network port 4 is not connected.

Chapter 3 MGW Boards

Buttons

Layout

DIP Switches and Jumpers

External Interfaces

Table 47 shows list of buttons on MNIC board TABLE 47 BUTTONS IN MNIC BOARD

Button Name

Description

EXCH

Perform active/standby changeover of MNIC board

RST

Reset MNIC board

Figure 56 shows the layout of MNIC board. FIGURE 56 MNIC LAYOUT

There is no DIP switch or jumper for MNIC. Table 48 shows external interfaces of MNIC board. TABLE 48 EXTERNAL INTERFACES OF MNIC BOARD

Interface

Purpose

1 GE interface or four to eight FE interfaces.

External work of MNIC

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Technical Indices

Backboard

Processing capacity of the board is 400M and MNIC supports hot-swap. RMNIC is the only backboard for MNIC board, as shown in Figure 57 .

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Interface Description FIGURE 57 MNIC BACKBOARD

8KOUT/ARM23

Pr MC23

DEBUG-FE

FE4

FE3

FE2

FE1

RMNIC

The RMNIC board provides the following interfaces:

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Precautions Overview







Parts

Working Principle

FE1~FE4 (RJ45 interface): The IPI board provides 4 FE interfaces, supporting at most 60Mbit/s IP signaling flow. 8KOUT/ARM232 (RJ45 interface): used to output the 8K system clock to the UIM board, and provide the reference clock for the boards in the shelf. In addition, this interface can be used for debugging, and does not provide service functions in this case. PrPMC232 and DEBUG-FE (RJ45 interface): This interface can be used for debugging, and does not provide service functions in this case.

Strictly observe operation regulations to prevent electrostatic damage to large scale integrated circuits on the board

Voice Transcoder Card (VTCD) VTCD is the TC unit configured in MGW system. It implements AMR voice coding/decoding and rate adaptation. It also processes the Iu-UP protocol. VTCD consists of following parts, as shown in Figure 58. 

CPU sub-card



DSP array



Circuit switching part



FE switching part



EC sub-card



FE PHY interface part Figure 58 shows the working principle of VTCD board.

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Panel FIGURE 58 VTCD WORKING PRINCIPLE

Figure 59 shows the panel of VTCD.

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Indicators FIGURE 59 VTCD PANEL

VTCD ENUM RUN ACT ALM

RST

There are 4 indicators on the VTCD panel, as shown in Table 49.

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Button

Layout

TABLE 49 INDICATORS ON THE VTCD PANEL

Indica tor

Color

Meaning

RUN

Green

Running Indicator

ALM

Red

Alarm indicator

ENUM

Yellow

Board Extraction Indicator

ACT

Green

Active/Stan dby indicator

Description Flashing at 5Hz: indicates board is power on Flashing at 1Hz: indicates board is running normally On: Alarm exists on board. Off: No alarm exists on board. When board inserts into a slot, by default ENUM indicator is on. When software detects ENUM signal and finds that extractor is closed, ENUM indicator turns off to indicate the system to work. On: board is active Off: board is standby

There is only one button RST on the VTCD panel which is used to reset VTCD board. Figure 60 shows the layout of VTCD. FIGURE 60 VTCD LAYOUT

CPU SubCard

EC SubCard

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DIP Switches, Overview Jumpers

Technical Indices

Backboard

Functions Precautions of the UIMC board

There is no DIP switch or jumper on VTCD board. VTCD provides no external interface. DSP array of the VTCD can process 960 channels of AMR signals. VTCD has no backboard. Strictly observe operation regulations to prevent electrostatic damage to large scale integrated circuits on the board

Universal Interface Module Board (UIM) UIM implements function of managing control shelf, Level-2 switching and control shelf inside level-1 switching shelf. Also, UIM provides external interfaces to control shelf and level-1 switching shelf. These interfaces include packet data interfaces (GE optical interfaces) connecting with core switching units and control panel data Ethernet interfaces (4 FE) of distributed processing platform. The UIM board in the MGW can be used as the UIMC, UIMU, UIMP and UIMT boards. Following are functions of UIMC board: 











94

UIMC provides two 24+2 switched HUBs. One is the control plane Ethernet HUB, and the other is the user plane Ethernet HUB. The control plane Ethernet HUB and the user plane Ethernet HUB provide 10 external control plane FE interfaces for interconnection between control planes in the shelf through the GE interconnection mode. UIMC provides one external user plane GE interface to cascade the CHUB in the control shelf. Internal FE ports on two hot active/standby boards and 8MHW use high resistance multiplexed mode for backup on the backboard. UIMC provides functions such as reading the cabinet number, shelf number, slot number, equipment number, and backboard version number. UIMC provides the internal RS-485 management interface and board reset and reset signal collection function. UIMC provides clock-driven function inside the resource shelf. After phase lock and drive, input PP2S, 8K, 16M signals are distributed to various slots of the resource shelf. It provides 16M, 8K and PP2S clocks for the resource boards.

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Functions of the UIMP board 



Functions of the UIMU board

UIMC also provides MAC configuration, VLAN and broadcast packet control functions. UIMC can be compatible with the commercial HUB.

Following are functions of UIMP board: 



















UIMP provides two 24+2 switched HUBs. One is the control plane Ethernet HUB, and the other is the user plane Ethernet HUB. The control plane HUB provides 20 internal control plane FE interfaces to interconnect with the boards of the resource shelf, and also provides 4 external control plane FE interfaces that are used between resource shelves or for interconnection between the resource shelf and the CHUB. The user plane HUB provides 23 internal FE to interconnect resource shelves and one external FE. UIMP provides one external user plane GE optical interface to interconnect the resource shelf and the core switching units by matching GXS daughter cards. The GE channel adopts active/standby dual channel backup mode to provide 1+1 backup for core switching units. UIMP provides one or two user plane GE interfaces and provides 1-2 GE slots for the resource shelf. UIMP implements resource shelf access to 16K timeslot of circuit switching units through two pairs of external optical fibers. UIMP also implements 8M to 32M multiplexing of 16K timeslot. Multiplexing of UIMP uses inter-shelf insertion, and provides 128 8M HWs to the resource shelf. Internal FE ports on two hot active/standby boards and 8MHW use high resistance multiplexed mode for backup on the backboard. UIMP provides functions such as reading the cabinet number, shelf number, slot number, equipment number, and backboard version number. UIMP provides the internal RS-485 management interface and board reset and reset signal collection function. UIMP provides clock-driven function inside the resource shelf. After phase lock and drive, input PP2S, 8K, 16M signals are distributed to various slots of the resource shelf. It provides 16M, 8K and PP2S clocks for the resource boards. UIMP also provides MAC configuration, VLAN and broadcast packet control functions. UIMP can be compatible with the commercial HUB.

Following are functions of UIMU board: 

UIMP provides two 24+2 switched HUBs. One is the control plane Ethernet HUB, and the other is the user plane Ethernet

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ZXWN MGW Media Gateway Hardware Description

Functions of the UIMT board HUB. The control plane HUB provides 20 internal control plane FE interfaces to interconnect with the boards of the resource shelf, and also provides 4 external control plane FE interfaces that are used between resource shelves or for interconnection between the resource shelf and the CHUB. The user plane HUB provides 23 internal FE to interconnect resource shelves and one external FE. 















UIMU provides one or two user plane GE interfaces and provides 1-2 GE slots for the resource shelf. UIMU can provide the 16K circuit switching function within the resource shelf. This function cannot coexist with the external multiplexing function on the UIMT board. These two functions are selected through inserting different daughter cards and selecting the welding methods. Internal FE ports on two hot active/standby boards and 8MHW use high resistance multiplexed mode for backup on the backboard. UIMU provides functions such as reading the cabinet number, shelf number, slot number, equipment number, and backboard version number. UIMU provides the internal RS-485 management interface and board reset and reset signal collection function. UIMU provides clock-driven function inside the resource shelf. After phase lock and drive, input PP2S, 8K, 16M signals are distributed to various slots of the resource shelf. It provides 16M, 8K and PP2S clocks for the resource boards. UIMU also provides MAC configuration, VLAN and broadcast packet control functions. UIMU can be compatible with the commercial HUB.

Following are functions of UIMT board: 



96

UIMT provides two 24+2 switched HUBs. One is the control plane Ethernet HUB, and the other is the user plane Ethernet HUB. The control plane HUB provides 20 internal control plane FE interfaces to interconnect with the boards of the resource shelf, and also provides 4 external control plane FE interfaces that are used between resource shelves or for interconnection between the resource shelf and the CHUB. The user plane HUB provides 23 internal FE to interconnect resource shelves and one external FE. UIMT provides one external user plane GE optical interface to interconnect the resource shelf and the core switching units by matching GXS daughter cards. The GE channel adopts active/standby dual channel backup mode to provide 1+1 backup for core switching units.

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Chapter 3 MGW Boards

Working Principle 















UIMT provides one or two user plane GE interfaces and provides 1-2 GE slots for the resource shelf. UIMT implements resource shelf access to 16K timeslot of circuit switching units through two pairs of external optical fibers. UIMT also implements 8M to 32M multiplexing of 16K timeslot. Multiplexing of UIMT uses inter-shelf insertion, and provides 128 8M HWs to the resource shelf. Internal FE ports on two hot active/standby boards and 8MHW use high resistance multiplexed mode for backup on the backboard. UIMT provides functions such as reading the cabinet number, shelf number, slot number, equipment number, and backboard version number. UIMT provides the internal RS-485 management interface and board reset and reset signal collection function. UIMT provides clock-driven function inside the resource shelf. After phase lock and drive, input PP2S, 8K, 16M signals are distributed to various slots of the resource shelf. It provides 16M, 8K and PP2S clocks for the resource boards. UIMT also provides MAC configuration, VLAN and broadcast packet control functions. UIMT can be compatible with the commercial HUB.

Figure 61 shows working principle of UIM board. FIGURE 61 UIM BOARD WORKING PRINCIPLE

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ZXWN MGW Media Gateway Hardware Description

Panel

UIM can serve as functional boards such as UIM, UIMU, UIMP and UIMT, depending on the configuration requirement of MGW system. Figure 62 shows the panels of UIM, UIMU, UIMT and UIMP.

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FIGURE 62 PANELS OF UIM, UIMU, UIMT AND UIMP

UIMC

UIMU

UIMT

UIMP

ENUM RUN

ENUM RUN

ENUM RUN

ENUM RUN

ACT ALM

ACT ALM

ACT ALM

ACT ALM

EXCH

EXCH

EXCH

EXCH

RST

RST

RST

RST

ACT-P ACT-T

ACT-P ACT-T

LINK1 LINK2

LINK1 LINK2

LINK1 LINK2

LINK1 LINK2

LINK3 LINK4

LINK3 LINK4

LINK3 LINK4

LINK3 LINK4

ACT1 ACT2

ACT1 ACT2

ACT1 ACT2

RX

RX

RX

1 TX

1 TX

1 TX

RX

RX

2

2

RX 2

TX

TX

TX

SD1

SD1

SD1

SD2

SD2

SD2

TX RX SD3 TX RX SD4 LINK5 LINK6 LINK7 LINK8 LINK9 LINK10

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ZXWN MGW Media Gateway Hardware Description

Indicators

Buttons

Layout

Table 50 shows indicators of UIM board. There are total 14 indicators in UIM board. TABLE 50 INDICATORS OF UIM BOARD

Indicator

Color

Indication

RUN

Green

Run indicator

ACT

Green

Active/stan dby indicator

On: Board is active.

ALM

Red

Alarm indicator

On: An alarm exists on board.

ENUM

LINK1 to LINK10

ACT1–2

SD1–4

Description Flashing at 5Hz: Board is in power on status. Flashing at 1Hz: Board runs normally.

Off: Board is standby.

Off: No alarm exists on board

Yellow

Board extraction Indicator

When board inserts into a slot, by default ENUM indicator is on. When software detects ENUM signal and finds that extractor is closed, ENUM indicator turns off to indicate the system to work.

Green

Status indicator of control plane cascade interface

ON: Control plane cascade 100M interface 1 is connected. OFF: Control plane cascade 100M interface 1 is not connected.

Green

Status indicator of GE interface 1

For indicating the currently activated optical interface

Green

Optical signal indicator of GE interface 1

For indicating whether the optical board has received optical signals.

Table 51 shows list of buttons on UIM board. TABLE 51 BUTTONS IN UIM BOARD

Button Name

Description

EXCH

Perform active/standby changeover of UIM board

RST

Reset UIM board

Figure 63 shows the layout of UIM board.

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Chapter 3 MGW Boards

DIP Switches and Jumpers

External Interfaces

Technical Index

Backboards of the UIMC Board

FIGURE 63 UIM LAYOUT

CPU SubCard

GCS/ GXS/ GTS SubCard

There is no a DIP switch or jumper on UIM board. Table 52 shows external interfaces of UIM board. TABLE 52 EXTERNAL INTERFACES OF UIM BOARD

Interface Two sets of 24*100M Ethernet interface 1 to 2 GE interfaces

UIM provides two sets of 24*100M Ethernet switching. When the UIM board is used as the UIMC board, the corresponding backboards are RUIM2 and RUIM3. The RUIM2 is inserted to the slot 9, and the RUIM3 is inserted to the slot 10. Figure 64 shows the panels of RUIM2 and RUIM3.

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ZXWN MGW Media Gateway Hardware Description

FIGURE 64 PANELS OF RUIM2 AND RUIM3

The RUIM2 and RUIM3 boards provide the following interfaces: 



102

FE1~FE10 (RJ45 interface): The RUIM2 and RUIM3 boards provide 10 FE interfaces for the interconnection between the control panels of the shelf. CLKIN (DB9 interface): The CLKIN interfaces on the RUIM2 and RUIM3 boards respectively introduce two lines of active/standby 8K system clock output by the CLKG board.

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Chapter 3 MGW Boards

Backboards of the UIMU, UIMT and UIMP Boards DEBUG (RJ45 interface): used for debugging and providing no service functions. When the UIM board is used as the UIMU, UIMT or UIMP board, the corresponding backboard is RUIM1. Figure 64 shows the panel of RUIM1.

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ZXWN MGW Media Gateway Hardware Description

Interface Description FIGURE 65 PANEL OF RUIM1

The RUIM1 board provides the following interfaces: 

104

FE1-C1/2 and FE-C3/4 (RJ45 interface): The UIMU, UIMT and UIMP boards are configured with two RUIM1 backboards. This interface provides 4 lines of FE interfaces of the control panel for the interconnection between the resource shelf, and between the resource shelf and the CHUB.

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Chapter 3 MGW Boards

Precautions Overview





Functions

Working Principle

FE-U (RJ45 interface): used for debugging and providing no service functions. CLKIN (DB9 interface): The CLKIN interfaces on the RUIM1 board can introduce two lines of active/standby 8K system clock output by the CLKG board.

Strictly observe operation regulations to prevent electrostatic damage to large scale integrated circuits on the board.

Signaling Processing Board (SPB) SPB is a multi-CPU processing board with 16-channel E1 and 4 8M-highway interfaces. SPB used as narrowband signaling processing board which processes HDLC of multi-channel signaling No.7 and performs processing of MTP-2 and lower layers. LIU and framer of 16-channel E1/T1 are integrated to SPB. In communication processing unit, there are four CPUs, two of which are used for 100M Ethernet switch and time-slotinterchange chip on user plane as well as control plane. SPB supports E1/T1 mode and two impedance configurations of 120 ohm and 75 ohm. For different system configurations, SPB is used as E1 access or single-chip CPU may be connected to E1 via chip exchanging and signaling may be transmitted. CPU system configures in the form of sub-card of entire system. SPB provides externally two Ethernet switch planes with individual output rate of 100M, and two Ethernet ports of CPU connects to two Ethernet planes. Also, SPB provides two external routes to clock board as reference to 8 kHz clock. Figure 66 shows the working principle of SPB board.

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ZXWN MGW Media Gateway Hardware Description

Panel FIGURE 66 SPB BOARD WORKING PRINCIPLE

4× 8MHW

4× 8MHW

TDM switching

4× 8MHW

E1 interface

16× E1

Ethernet switching on a control plane

Control panel Ethernet

Ethernet switching on a media plane

Media panel Ethernet

CPU subsystem

Figure 67 shows panel of SPB.

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FIGURE 67 PANEL OF SPB

SPB ENUM RUN ACT ALM

RST

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ZXWN MGW Media Gateway Hardware Description

Indicators

Buttons

Layout

Table 53 shows indicators of SPB. TABLE 53 INDICATORS OF SPB

Indicator

Color

Indication

Description

RUN

Green

Running Indicator

ALM

Red

Alarm indicator

Flashing at 5Hz: Indicates board is power on Flashing at 1Hz: Indicates board is running normally On: Alarm exists on board.

ENUM

Yellow

Off: No alarm exists on board. When board is inserted into a slot, by default ENUM indicator is on. When software detects ENUM signal and finds that extractor is close,

Board Extraction Indicator

ENUM indicator turns off to indicate the system to work. ACT

Green

Active/Standby indicator

On: board is active Off: board is standby

Table 54 shows list of buttons on SPB. TABLE 54 BUTTONS IN SPB BOARD

Button Name

Description

RST

Reset SPB

Figure 68 shows the layout of SPB.

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Chapter 3 MGW Boards

DIP Switches and Jumpers

External Interfaces

Technical Indices

FIGURE 68 SPB LAYOUT

There are six 4-digit DIP switches on SPB board. 

Four digits of S3 represent E1s 1–4 on the SPB board.



Four digits of S4 represent E1s 5–8 on the SPB board.



Four digits of S5 represent E1s 9–12 on the SPB board.



Four digits of S6 represent E1s 13–16 on the SPB board.

S1 and S2 respectively indicate the receiving matching impedance and long/short haul state of each E1 chip. CPU retrieves the state and initializes E1 chip according to the state. If S1 is on (1 is retrieved), it indicates long haul. If S1 is off (o is retrieved), it indicates short haul. If S2 is on (1 is retrieved), it indicates that the matching impedance is 120 ohm. If S2 is off (0 is retrieved), it indicates that the matching impedance is 75 ohm. Channels 1–4 f S1/S2 respectively represents the E1 Chips 1–4 (namely, E1 channels 1–4, 5–8, 9–12, and 13–16). Table 55 shows external interfaces of SPB board. TABLE 55 EXTERNAL INTERFACES OF SPB

Interface SPB provides 16 E1 external interfaces.

Table 56 shows technical indices of SPB.

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Backboard TABLE 56 TECHNICAL INDICES OF SPB

Technical Indices SPB used as narrowband signaling processing board with 64*64k links or 4*2M links.

RSPB is the only backboard for SPB board, as shown in Figure 69.

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FIGURE 69 SPB BACKBOARD

8KOUT/DEBUG-23

E1 2-16

E1 -1

RSPB

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ZXWN MGW Media Gateway Hardware Description

Overview Interface Description

Precautions

Functions

The RSPB board provides the following interfaces: 



E1~E11, E12~E16 (DB44 interface): The SPB board can provide 16 E1 interfaces. For the cable connection, and the correspondence between the pins and cores, refer to the transmission cables in Chapter 6. 8KOUT/DEBUG-232 (RJ45 interface): Outputs the 8K system clock to the UIM board and provides the reference clock to the boards in the shelf. In addition, this interface can be used for debugging, and does not provide service functions in this case.

Strictly observe operation regulations to prevent electrostatic damage to large scale integrated circuits on the board.

Packet Switch Network Board (PSN4V/PSN8V) PSN4V/PSN8V switching board performs packet data switching between cards and wires. PSN4V/PSN8V also acts as self-routing crossbar switching system and completes switching function with the help of queue engine on interface board. PSN4V/PSN8V provides maximum user data switching capacity of 40G. Following are functions of PSN4V/PSN8V board: 





 

Dual-directional user data switching capability, 40Gbps in each direction PSN4V/PSN8V performs 1+1 load sharing, manual switching or software switching Achieve maximum 80G switching capacity via flat upgrade to PSN8V Provide two 10/100Mb Ethernet as control channels Provide version identification and physical ID reading, such as cabinet, shelf and slot number Figure 70 shows the working principle of PSN4V/PSN8V board.

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Working Principle

Chapter 3 MGW Boards

Panel FIGURE 70 PSN4V/PSN8V BOARD WORKING PRINCIPLE

Control Bus CPU Subsystem HSSL

CPLD

CrossBar Switch Figure 71 shows panel of PSN4V/PSN8V board.

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ZXWN MGW Media Gateway Hardware Description

Indicators FIGURE 71 PSN4V/PSN8V BOARD PANEL

PSN4V PSN8V ENUM RUN ENUMRUN ACT ALM ACT ALM EXCH

EXCH

RST

RST

Table 57 shows indicators of PSN4V/PSN8V board. TABLE 57 INDICATORS OF PSN4V/PSN8V BOARD

114

Indicator

Color

Indication

Description

RUN

Green

Running Indicator

Flashing at 5Hz: indicates board is power on

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Chapter 3 MGW Boards

Overview Buttons Indicator Color

Technical Indication

Indices

Precautions Description Flashing at 1Hz: indicates board is running normally On: Alarm exists on board.

ALM

Red

Alarm indicator

Off: No alarm exists on board. When board is inserted in a slot, by default ENUM indicator is on. When software detects ENUM signal and finds that extractor is closed, ENUM indicator turns off to indicate the system to work.

ENUM

Yellow

Board Extraction Indicator

ACT

Green

Active/Standby indicator

On: board is active Off: board is standby

Table 58 shows list of buttons on PSN4V/PSN8V board. TABLE 58 BUTTONS IN PSN4V/PSN8V BOARD

Button Name

Description

EXCH

Perform active/standby changeover of PSN4V/PSN8V board

RST

Reset PSN4V/PSN8V board

Table 59 shows technical indices of PSN4V/PSN8V board. TABLE 59 TECHNICAL INDICES OF PSN4V/PSN8V BOARD

Technical Indices PSN4V provides dual-directional packet data exchange, 40Gbps in each direction. PSN8V provides dual-directional packet data exchange, 80Gbps in each direction

Strictly observe operation regulations to prevent electrostatic damage to large scale integrated circuits on the board.

Line Interface Board (GLIQV) GLIQV acts as line interface board for four GE ports.

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Working Principle

Following are functions of GLIQV board: 







Provides four GE ports for 1+1 backup of each GE optical interface and a backup port between GE ports of adjunct GLIQV Implement functions such as physical layer adaptation, IP packet checklist, fragmentation, transfer management and traffic management. GLIQV has processing capability orientation such as 2.5Gbps line-speed processing and transfer, and 1K-stream traffic management Provide one 100M Ethernet as active/standby communication channel Provide one 100M Ethernet as control-of-flow channel

Figure 72 shows the working principles of GLIQV board. FIGURE 72 GLIQV BOARD WORKING PRINCIPLE

Optical Module

Ingress NP

Queue Manager

GE MAC

HSSL

Egress NP

Optical Module

CPLD

Logical names of GLIQV board are GGLP and GGUP. Figure 73 shows the panel of GLIQV board.

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FIGURE 73 GLIQV PANEL

GLI ENUMRUN ACT ALM EXCH RST TX RX ACT1 SD1 TX RX ACT2 SD2 TX RX ACT3 SD3 TX RX ACT4 SD4 TX RX ACT5 SD5 TX RX ACT6 SD6 TX RX ACT7 SD7 TX RX ACT8 SD8

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Indicators

Buttons

Technical Indices

Table 60 shows indicators of GLIQV board. TABLE 60 INDICATORS OF GLIQV BOARD

Indicator

Color

Indication

Description

RUN

Green

Running Indicator

ALM

Red

Alarm indicator

Flashing at 5Hz: indicates board is power on Flashing at 1Hz: indicates board is running normally On: Alarm exists on board. Off: No alarm exists on board. When board is inserted in a slot, ENUM indicator is on by default. When software detects ENUM signal and finds that extractor is closed, ENUM indicator turns off to indicate the system to work.

ENUM

Yellow

Board Extraction Indicator

ACT

Green

Active/Standby indicator

On: board is active Off: board is standby

Table 61 shows list of buttons on GLIQV board. TABLE 61 BUTTONS IN GLIQV BOARD

Button Name

Description

EXCH

Perform active/standby changeover of GLIQV board

RST

Reset GLIQV board

Table 62 shows technical indices of GLIQV board. TABLE 62 TECHNICAL INDICES OF GLIQV BOARD

Technical Index GLIQV offers the transfer capability at the line speed of 2.5 Gbps for each direction and to manage 1K flows.

Table 63 shows external interfaces of GLIQV board.

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External Interfaces

Chapter 3 MGW Boards

Precautions Overview

Working Principle

Functions

TABLE 63 EXTERNAL INTERFACES OF GLIQV BOARD

Interface GLIQV provides four pairs of external GE optical interfaces, each pair mutually backing up. Through these interfaces, class-2 resources shelf connects to class-1 switching platform.

Strictly observe operation regulations to prevent electrostatic damage to large scale integrated circuits on the board.

Digital Trunk Board (DTB/DTEC) DTB/DTEC is the digital trunk interface module. It provides 32 E1/T1 links. Difference between DTB and DTEC lies in the Echo Cancellation (EC) function. DTEC can be configured with EC function (optional). Figure 74 shows the working principle of DTB/DTEC. FIGURE 74 DTB WORKING PRINCIPLE

ControlStream FE

CPU Subsystem

Circuit Switch

CPLD

TDM Bus Dat a Bus

E1 LIU P rotect Circuit Alarm

E1 LIU&Framer

Addr ess Bus

8*8K

2*8K

B A C K P L A N E

Cl ock 8K、16M

8K、16M 32*E1/ T1

The circuitry consists of these modules: unit processing circuit, E1 interface circuit, timeslot switching circuit, EC circuit, alarm detection and indication circuit, time sequence and logic generation circuit, and bus receiving and transmitting circuit. DTB/DTEC has the following functions: 



It provides 32×E1/T1 interfaces and supports the EC function (optional). It supports transparent transmission of intra-office CAS and CCS.

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Panel 

It can extract 8K synchronous clock from a line and transfer it through a cable to the clock module as a reference clock.

Figure 75 shows the panels of DTB and DTEC.

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FIGURE 75 PANELS OF DTB AND DTEC

DTEC

DTB

ENUM RUN

ENUM RUN

ACT ALM

ACT ALM

RST

RST

E1

E1

L1 L2

L1 L2

L3 L4

L3 L4

L5 L6

L5 L6

L7 L8

L7 L8

L9 L10

L9 L10

L1 L12

L1 L12

L13 L14

L13 L14

L15 L16

L15 L16

E1

E1

L17 L18

L17 L18

L19L20

L19 L20

L21L22

L21 L2

L23L24

L23 L24

L25 L26

L25 L26

L27L28

L27 L28

L29 L30

L29 L30

L31L32

L31 L32

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Indicators

Buttons

Layout

There are 36 indicators on the DTB/DTEC panel, as shown in Table 64. TABLE 64 INDICATORS ON THE DTB/DTEC PANEL

Indicator

Color

Indication

RUN

Green

Running Indicator

ALM

Red

Alarm indicator

Description Flashing at 5Hz: indicates board is power on Flashing at 1Hz: indicates board is running normally On: Alarm exists on board.

ENUM

Yellow

Board Extraction Indicator

ACT

Green

Active/Standby indicator

L1-L32

Green

32-channel E1 indicators

Off: No alarm exists on board. When board inserts into a slot, by default ENUM indicator is on. When software detects ENUM signal and finds that extractor is closed, ENUM indicator turns off to indicate the system to work. On: board is active Off: board is standby Off: E1 is not configured in the database. Constantly on: E1 is configured in the database, but the E1 is not connected. Flashing at 1HZ: E1 is configured in the database, and the E1 is connected.

Table 65 shows the button on DTB/DTEC panel. TABLE 65 BUTTON ON THE DTB/DTEC PANEL

Name

Description

RST

Reset switch

Figure 76 shows the layout of DTB/DTEC.

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DIP Switches and Jumpers FIGURE 76 DTB/DTEC LAYOUT

S1 ON

S2 ON

S3 ON

S4 ON

S5 ON

S6

S7

ON

S8

ON

S10

ON

S12

ON

ON

S9 ON

S12 ON

X23

There are 12 DIP switches on DTB/DTEC. 

Eight 4-digit DIP switches (S1-S6, S9, and S12) are used to select the matching impedance of each E1 channel: 75 ohm or 120 ohm. If DIP switch is “ON”, the line impedance is 75 ohm. And if DIP switch is OFF”, the line impedance is 120 ohm.



Two 4-digit DIP switches (S7 and S8) indicate the receiving matching impedance of each E1 chip for the CPU. If DIP switch is “ON”, it indicates that the matching impedance of the corresponding E1 is 75 ohm. And if DIP switch is “OFF”, it indicates that the matching impedance of corresponding E1 is 120 ohm. Each DIP switch corresponds to one E1 chip: S7 corresponds to E1 Chips 1–4 (E1 Channels 1–16); S8 corresponds to E1 Chips 5–8 (E1 Channels 17–32). CPU retrieves the state and initializes the E1 chip according to the state.



Two 4-digit DIP switches (S10 and S11) indicate the long/short haul state of each E1 chip for the CPU. If DIP switch is “ON”, it indicates that the corresponding E1 chip (four E1 channels) works in the “SHORT HAUL” mode. If

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External Interfaces

Technical Indices

Backboard

DIP switch is “OFF”, it indicates that the corresponding E1 chip works in “LONG HAUL” mode. Each DIP switch corresponds to E1 corresponds to E1 retrieves the state state.

corresponds to one E1 chip: S10 Chips 1–4 (E1 Channels 1–16); S11 Chips 5–8 (E1 Channels 17–32). CPU and initializes E1 chip according to the

DTB/DTEC provides one jumper (X23) for debugging the module. In normal operation, X23 is disconnected. DTB/DTEC provides 32 E1/T1 interfaces.



DTB/DTEC supports up to 32 E1/T1 channels.



It supports hot swap.

Backboard of DTB/DTEC is RDTB. Figure 77 shows the panel of RDTB.

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Interface Description FIGURE 77 RDTB PANEL

DEBUG-FE/23

E1 2 -32

E1 1-2

E1 -10

RDTB

The RDTB board provides the following interfaces: 

E1 1~10, E1 11~21 and E1 22~32 (DB44 interface): Provides 11 lines of E1/T1 interfaces respectively. Therefore,

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Precautions

Jumpers Selection

the RDTB board can totally provide 32 E1/T1 interfaces. For the cable connection, and the correspondence between the pins and cores, refer to the transmission cables in Chapter 6. 





8KOUT/DEBUG-232 (RJ45 interface): Outputs the 8K system clock to the UIM board and provides the reference clock to the boards in the shelf. In addition, this interface can be used for debugging, and does not provide service functions in this case. Strictly observe operation regulations to prevent electrostatic damage to large scale integrated circuits on the board. By default, E1 line on RDTB is configured as 75 ohm unbalanced coaxial transmission mode; the transmitting end is connected to the protection ground through jumpers and the receiving end is connected to a capacitor (0.1uF) and then connected to the protection ground through jumpers. Functions are selected through jumpers X9-X16 on RDTB.

Table 66 shows the selection of X9-X16. TABLE 66 CONNECTION MODE OF X9-X16 JUMPERS

Connection Mode

Description

1–2

They connect E1_TX (N)-R to the protection ground (Channel N).

3–4

They connect E1_RX (N)-R to the protection ground (Channel N).

5–6

They connect E1_TX (N+1)-R to the protection ground (Channel N+1).

7–8

They connect E1_RX (N+1)-R to the protection ground (Channel N+1).

9–10

They connect E1_TX (N+2)-R to the protection ground (Channel N+2).

11–12

They connect E1_RX (N+2)-R to the protection ground (Channel N+2).

13–14

They connect E1_TX (N+3)-R to the protection ground (Channel N+3)

15–16

They connect E1_RX (N+3)-R to the protection ground (Channel N+3).

Note: E1 line uses 120 ohm PCM unbalanced transmission mode, the connected blocks of X9-X16 on RDTB shall be removed.

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Overview Panel

Working Principle

Control Plane Interconnection Board (CHUB) In MGW system, CHUB is used for the expansion of distributed processing platform. Each resource shelf provides two 100M Ethernet (control-of-flow) to connect with Convergence Ethernet (CHUB, control-of-flow hub). CHUB connects with control shelf UIM through a kilo mega electrical interface. Expansion of multiple shelves can implemented in multiple FE TRUNK modes. Expansion of more shelves can implements by connecting GE optical interface with GE switch. Figure 78 shows the working principle of CHUB board. FIGURE 78 CHUB BOARD WORKING PRINCIPLE RS485 EPLD

CPU RS232

PCI Bus

Ethernet Switch

GMII/TBI

Ethernet Switch

GE 46*FE

Figure 79 shows the panel of CHUB board.

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FIGURE 79 PANEL OF CHUB BOARD

CHUB CHUB ENUMRUN ENUMRUN A C T A LM A C T A LM EXC H

EXC H

RST

RST

L1 L2

L1 L2

L3 L4

L3 L4

L5 L6

L5 L6

L7 L8

L7 L8

L9 L10

L9 L1 0

L1 L12

L1 L1 2

L13 L14

L13 L1 4

L15 L16

L15 L1 6

L17 L18

L17 L1 8

L19 L20

L19 L2 0

L21 L2

L21 L2

L23 L24

L23 L2 4

L2 5 L26

L25 L2 6

L2 7 L28

L27 L2 8

L29 L30

L29 L3 0

L31 L32

L31 L3 2

L3 L34 ACT1 ACT2 L35 L3 6 L37 L3 8 L39 L4 0

RX 1 TX RX

L41 L42 L43 L4

2 TX SD 1

L45 L46 SD 2

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Indicators

Buttons

Table 67 shows the indicators of CHUB board. TABLE 67 INDICATORS OF CHUB BOARD

Indicator

Color

Indication

RUN

Green

Run indicator

ACT

Green

Active/ Standby indicator

On: Board is active.

ALM

Red

Alarm indicator

On: Alarm exists on board.

ENUM

L1-L46

ACT1

ACT2

SD1

SD2

Description Flashing at 5Hz: indicates board is power on. Flashing at 1Hz: indicates board is running normally.

Off: Board is standby.

Off: No alarm exists on board When board inserts into a slot, by default ENUM indicator is on. When software detects ENUM signal and finds that extractor is closed, ENUM indicator turns off to indicate the system to work.

Yellow

Board extraction Indicator

Green

Status indicator of control plane cascade interface

Green

Status indicator of GE interface 1

Indicates the currently activated optical interface

Green

Status indicator of GE interface 2

Indicates currently activated optical interface

Green

Optical signal indicator of GE interface 1

Indicates whether the optical board has received optical signals.

Green

Optical signal indicator of GE interface 2

Indicates whether the optical board has received optical signals.

On: Control plane cascade 100M interface 1 is connected. Off: Control plane cascade 100M interface 1 is not connected.

Table 68 shows the list of buttons on CHUB board.

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External Interfaces

Backboards

TABLE 68 BUTTONS IN CHUB BOARD

Button Name

Description

EXCH

Perform active/standby changeover of CHUB board

RST

Reset CHUB board

Table 69 shows the external interfaces of CHUB board. TABLE 69 EXTERNAL INTERFACES OF CHUB BOARD

External Interface CHUB provides 46 100M Ethernet interfaces and one 1000M optical interface.

Following are backboards of CHUB board, as shown in Figure 80.

130



RCHB1



RCHB2

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Precautions FIGURE 80 PANELS OF RCHB1 AND RCHB2

FE1-8 FE9-16

FE3 -40

FE17-24

FE41-46

DEBUG-FE/232

DEBUG-FE/232

FE25-32

RCHB1 RCHB2

Strictly observe operation regulations to prevent electrostatic damage to large scale integrated circuits on the board.

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Functions Overview

Working Principle

Parts

TDM Switch Network Board (TSNB) TSNB provides switching function for the 64k circuit timeslots. Switching network connects to the TFI in the local shelf through a backplane with 576M LVDS. Figure 81 shows the working principle of the TSNB. FIGURE 81 TSNB WORKING PRINCIPLE

TSNB provides unblocked switching network with the T-T-T structure. Switching capacity is 64K×64K timeslots, and the rate of the PCM bus is 32 Mbps. Two TSNBs work in active/standby mode. Active and standby TSNBs exchange information through one Ethernet channel. MPB controls the connection of the T network through the control plane. Backup RS485 channel is provided. TSNB consists of these parts:

132



CPU sub-card control part



Digital switching array part



Power conversion part



LVDS interface part

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Panel 

Ethernet and RS485 part



Frame synchronization adjustment part

Figure 82 shows the panel of TSNB.

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Indicators FIGURE 82 PANEL OF THE TSNB

T S NB ENUM RUN ACT ALM EXCH RST

There are 4 indicators on TSNB panel, as shown in Table 70.

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Buttons

Layout

TABLE 70 INDICATORS ON THE TSNB PANEL

Indicator

Color

Indication

Description

RUN

Green

Running Indicator

ALM

Red

Alarm indicator

Flashing at 5Hz: indicates board is power on Flashing at 1Hz: indicates board is running normally On: Alarm exists on board. Off: No alarm exists on board. When board inserts into a slot, by default ENUM indicator is on. When software detects ENUM signal and finds that extractor is closed, ENUM indicator turns off to indicate the system to work.

ENUM

Yellow

Board Extraction Indicator

ACT

Green

Active/Standby indicator

On: board is active Off: board is standby

Table 71 shows the list of buttons on TSNB panel. TABLE 71 TSNB PANEL BUTTONS

Button Name

Description

EXCH

Perform active/standby changeover of TSNB board

RST

Reset TSNB board

Figure 83 shows the layout of TSNB.

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DIP Switches, Overview Jumpers

Technical Indices

Backboard

Precautions Working Principle

FIGURE 83 TSNB LAYOUT

There is no DIP switch or jumper on TSNB. And, TSNB board provides no external interface. TSNB can provide the unblocked circuit switching of 64K×64K. TSNB has no backboard. Strictly observe operation regulations to prevent electrostatic damage to large scale integrated circuits on the board.

TDM Fiber Interface (TFI) In MGW system, T network unit provides switching function for the TDM timeslots between boards (for example DTB or VTC) inside the DTU and TCU. TFI is the interface of the T network unit. It provides interfaces from the TSNB inside the T network unit to the external DTU and TCU. Figure 84 shows the working principle of TFI.

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Functions

Panel

FIGURE 84 TFI BOARD WORKING PRINCIPLE

CPU monitoring part monitors the de-multiplexing and multiplexing of 8 channels of optical transmission and establishes links. It checks links, bit error, and clock. It also provides functions such as state query and active/standby control. Besides, it communicates with the MP through an RS485 port. FPGA extracts and inserts 8 kHz frame synchronization signal. It also generates, inserts, and checks pseudo number. Figure 85 shows the panel of TFI.

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FIGURE 85 TFI PANEL

TFI ENUMRUN ACT ALM EXCH RST TX RX ACT1 SD1 TX RX ACT2 SD2 TX RX ACT3 SD3 TX RX ACT4 SD4 TX RX ACT5 SD5 TX RX ACT6 SD6 TX RX ACT7 SD7 TX RX ACT8 SD8

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Indicators

Buttons

Layout

There are 20 indicators on the TFI panel, as shown in Table 72. TABLE 72 INDICATORS ON THE TFI PANEL

Indicator

Color

Indication

Description

RUN

Green

Running Indicator

ALM

Red

Alarm indicator

Flashing at 5Hz: indicates board is power on Flashing at 1Hz: indicates board is running normally On: Alarm exists on board. Off: No alarm exists on board. When board inserts into a slot, by default ENUM indicator is on. When software detects ENUM signal and finds that extractor is closed, ENUM indicator turns off to indicate the system to work.

ENUM

Yellow

Board Extraction Indicator

ACT

Green

Active/Standby indicator

ACT1-8

Green

Indicator of activated optical port

For indicating the currently activated optical interface.

SD1-8

Green

Optical signal indicator

For indicating whether the optical board has received optical signals.

On: board is active Off: board is standby

Table 73 shows the list of buttons on TFI panel. TABLE 73 PANELS ON THE TFI PANEL

Button Name

Description

EXCH

Perform active/standby changeover of TFI board

RST

Reset TFI board

Figure 86 shows the layout of the TFI.

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DIP Switches, Overview Jumpers

External Interfaces

Technical Indices

Precautions Backboard

FIGURE 86 TFI LAYOUT

There is no DIP switch or jumper on TFI. TFI provides 8 GE optical interfaces. Each pair of TFIs supports the access of 64K timeslots. TFI board has no backboard. Strictly observe operation regulations to prevent electrostatic damage to large scale integrated circuits on the board.

Power Distribution Board (PWRD) PWRD implements distribution, isolation and backup of twochannel -48 V power supplies in MSCS system. Also, it monitors power, cabinet and environment. Power supply part includes EMC filter design, lightning protection design and isolation design at the input/output port of power supply. Monitoring part includes over/under-voltage detection of two-channel -48 V power supplies, rotary speed detection of 18 fans, environment test, ambient humidity test, smoke-sensitive alarm test, infrared alarm test, cabinet entrance control and entrance control of the equipment room.

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Functions Panel

Working Principle

Indicators

PWRD components include environmental parameter sensor interface, power voltage detection circuit, signal processing and optical-electrical isolation circuit, digital interface logical circuit, SCM minimum system, LED alarm indicator, and RS485 serial communications interface circuit. When -48 V power has overvoltage, under-voltage or failure, or when fans work abnormally. Also, when a smoke signal, an illegal intrusion signal or a temperature/humidity threshold-crossing signal appears in system working environment, the system gives out an LED alarm signal. This signal is reported via RS485 interface to OMP, other relevant functional board or backend server. Figure 87 shows the working principle of PWRD board. FIGURE 87 PWRD WORKING PRINCIPLE

(1) To OMP

485(3)

CPU

P3

I2C(2)

P1

(3) (1)

P2

EEPROM Temperature and humidity control

Smoke sensor control

P0

LED

DB

373 AB

INT

WE/RD/ALE

FREQ

WDI

FLASH

CS TEMP(FREQ) HUMI(FREQ)

Access control EPLD

SEL(4)

Infrared/smoke

VOLTAGE1 MUX

Fan

VFC

VOLTAGE2

VER

Short connection line: digital signals Dotted line: frequency signals Dotted connection line: analog signals RSV

RSV SWITCH

There is no panel in PWRD board shelf. There are 8 indicators on PWRD shelf as shown in Table 74. TABLE 74 INDICATORS ON POWER DISTRIBUTION SHELF PANEL

Indicator

RUN

Color

Meaning

Green

Run indicator

Description Flashing at 5 Hz: Version program update. Flashing at 1 Hz: Circuit board runs normally.

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Layout Indicator Color

Meaning

-48V(I)

Alarm indicator of channel 1 –48 V power

Red

-48V(II)

Alarm indicator of channel 2 –48 V power

Red

FAN

HOT

SMOKE

ARRESTE R

ON: There is no channel 1 -48 V power supply or the power is in the over-voltage or under-voltage state. OFF: Channel 1 -48 V power supply is normal. ON: There is no channel 2 -48 V power supply or the power is in the over-voltage or under-voltage state. OFF: Channel 2 -48 V power supply is normal. ON: A fan is faulty.

Red

Fan alarm indicator

Red

Ambient temperatu re alarm indicator

OFF: All the fans run normally. ON: Ambient temperature is higher than the alarm threshold value. OFF: Ambient temperature is within the threshold value range. ON: Ambient smoke parameter exceeds the rated value, and an alarm exists.

Ambient smoke alarm indicator

Red

DOOR

Description

OFF: Ambient smoke parameter is normal. ON: A door under supervision is open.

Red

Entrance control alarm indicator

Red

Lightening arrester alarm indicator

OFF: All the doors under supervision are close. ON: The lightning arrester is damage and needs to be replaced. OFF: The lightning arrester runs normally.

Figure 88 shows the PWRD layout. FIGURE 88 PWRD LAYOUT SCHEMATIC DIAGRAM

X8

X2

ON

X9

142

2 4 6

10 8 6

9

3

7 5

5 7

4

3

9

2

1

ON

4321

S3

4321

S2

1

X10

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Chapter 3 MGW Boards

DIP Switches and Jumpers

External Interfaces

Technical Indices

Backboard

There are three jumpers on the PWRD module: X1, X2, and X8. 

X1: hardware debugging jumper. In normal working, it is connected. It disconnects only in hardware debugging.



X2: EPLD logic download socket.



X8: used for 485 matching mode selection.

PWRD module provides the following signal interfaces externally: 

 

Environment detection interfaces, such as smoke sensor, temperature and humidity sensor, infrared sensor and entrance control sensor for equipment room/cabinet. Rotary speed signal interface of four groups of fans. Two RS485 serial interfaces, used for connecting to OMP and interconnection of 485 buses interconnected between cabinets.

All the environment parameters of PWRD module are adjustable. Default alarm thresholds include: 







Voltage: An alarm occurs when voltage is lower than -60 V or higher than -42 V. Temperature: An alarm occurs when temperature is lower than 0°C or higher than 40°C. Cabinet temperature: An alarm occurs when temperature is lower than 0°C or higher than 70°C. Ambient humidity: An alarm occurs when humidity is higher than 90%.

PWRD is located inside the power distribution shelf, with no corresponding back board. However, all external interfaces provides by power distribution backplane PWRDB, as shown in Figure 89. FIGURE 89 PWRDB LAYOUT SCHEMATIC DIAGRAM

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Precautions Overview

Functions

Working Principle

Strictly observe operation regulations to prevent electrostatic damage to large scale integrated circuits on the board.

Sonet Digital Trunk Board (SDTB) SDTB provides STM-1 trunk interfaces for the system. It can process CAS and CCS. One SDTB can process 63 channels of E1 signals or 84 channels of T1 signals. When the SDTB connects with the PSTN, it can provide the EC function. SDTB has the following functions: 

It provides one 155 Mbps STM-1 interface.



It is compatible with E1 and T1.



 

 







It provides AU pointer processing, mapping and de-mapping functions for the STM-1 signal. It supports CAS and CCS. It provides SDH network management function through the TDM. It provides sixteen 8M HW to provide adaptation for the UIM. It outputs two channels of differential 8K synchronization clock signal as the reference clock of the clock board. It provides one 100M Ethernet interface for communicating with the UIM and transferring management information, control information, software version, and so on. It provides functions such as remote reset and load and hardware WATCHDOG. It provides active/standby communication and changeover functions.

Figure 90 shows the working principle of the SDTB.

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Parts

Description

Panel

FIGURE 90 SDTB BOARD WORKING PRINCIPLE

Circuitry of SDTB includes following parts: 

CPU subsystem



155.52 MHz optical/electrical interface circuit



Switching circuit



Overhead processing circuit



Mapping and framing circuit

Data received from STM-1 optical interface is sent to the overhead processing circuit. Overhead processing circuit performs operations such as clock phase-locking and synthesis, section overhead processing, parallel-to-serial conversion, channel overhead processing and pointer processing on the data. Then the overhead processing sends data to the mapping and framing circuit for de-mapping. After that, data sends to framer and then sent to the backplane through switching circuit as 8MHW. If the EC function is needed, 8M HW is sent by the switching circuit and then sent to the backplane through the EC circuit. Framer can process CAS, which is then retrieved by the CPU. Mapping and framing circuit does not process CCS. Communication link data of the CPU is sent to the UIM through HDLC. Similarly, the switching circuit retrieves the communication link data from 8MHW of the backplane, and then sends the data through HDLC to the CPU for processing. Voice channel is sent to the mapping and framing circuit as 8 MHz. Mapping and framing circuit maps the voice channel and then sends it to the overhead processing circuit. Figure 91 shows the panel of SDTB.

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ZXWN MGW Media Gateway Hardware Description

FIGURE 91 SDTB PANEL

SDTB ENUM RUN ACT ALM EXCH RST

TX RX SD

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Indicators

Buttons

Layout

There are 5 indicators on the SDTB panel, as shown in Table 75. TABLE 75 INDICATORS ON THE SDTB PANEL

Indicator

Color

Indication

Description

RUN

Green

Running Indicator

ALM

Red

Alarm indicator

Flashing at 5Hz: indicates board is power on Flashing at 1Hz: indicates board is running normally On: Alarm exists on board. Off: No alarm exists on board. When board inserts into a slot, by default ENUM indicator is on. When software detects ENUM signal and finds that extractor is closed, ENUM indicator turns off to indicate the system to work.

ENUM

Yellow

Board Extraction Indicator

ACT

Green

Active/Standby indicator

SD

Green

Optical signal indicator

On: board is active Off: board is standby For indicating whether the optical board has received optical signals.

Table 76 shows the buttons on SDTB panel. TABLE 76 BUTTONS ON SDTB PANEL

Button Name

Description

EXCH

Perform active/standby changeover of SDTB board

RST

Reset SDTB board

Figure 92 shows the layout of the SDTB.

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DIP Switches and Jumpers

External Interface

Technical Indices

Backboards

FIGURE 92 SDTB LAYOUT

There is no DIP switch or jumper on SDTB. SDTB provides one STM-1 optical interface. SDTB can process 63 channels of E1 signals or 84 channels of T1 signals. 



148

If 8K reference clock is not retrieved from STM-1 line, then no back board is used. If 8K reference clock is retrieved from STM-1 line, then RGIM1 is used. Figure 93 shows the panel of RIMG1.

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Interface Description FIGURE 93 RGIM1 PANEL

8KOUT/DEBUG-23

RGIM1

The RGIM1 board provides the following interface: 8KOUT/DEBUG-232 (RJ45 interface): Outputs the 8K system clock to the UIM board and provides the reference clock to the boards in the shelf. In addition, this interface can be used for debugging, and does not provide service functions in this case.

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Precautions Panel Strictly observe operation regulations to prevent electrostatic damage to large scale integrated circuits on the board.

Enhanced TDM Switch Network Board (ETSN) Figure 94 shows the panel of ETSN.

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Indicators FIGURE 94 ETSN PANEL

ETSN ENUM RUN ACT ALM EXCH RST

There are 4 indicators on ETSN panel, as shown in Table 70.

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Buttons TABLE 77 INDICATORS ON THE ETSN PANEL

Indicator

Color

Meaning

Description Flashing at 5Hz: indicates board is power on

RUN

Green

Running Indicator

Flashing at 1Hz: indicates board is running normally Keeping flashing at 5Hz: indicates power-on fails

ALM

Red

Alarm indicator

ENUM

Yellow

Board Extraction Indicator

ACT

Green

Active/Sta ndby indicator

On: Alarm exists on board. Off: No alarm exists on board. When the board is inserted into a slot, by default the ENUM indicator is on. That is, during the power-on process of the board, when the software is not started, the ENUM indicator is on; when the software detects ENUM signal and finds that extractor is closed, ENUM indicator turns off to indicate that the system starts to work. If the board needs to be extracted, the extractor should be opened first, and press the micro-switch to generate an ENUM interruption signal to the CPU. After the CUP exits the working status due to system control, the ENUM indictor will be on (it is necessary to keep querying whether the ENUM signal changes at the same time) to indicate that the board can be extracted (if the ENUM indictor is not on, do not forcibly extract the board; otherwise, service loss will be caused). If the maintainer recloses the extractor instead of extracting the board, the software can successfully query the changes of the ENUM signal, and therefore knows that the extractor has been re-closed. The software restarts to go into the working status, and the ENUM indictor will be off On: board is active Off: board is standby

Table 71 shows the buttons on ETSN panel.

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Layout

DIP Switches and Jumpers

External Interface

Working Principle

TABLE 78 BUTTONS ON THE ETSN PANEL

Name

Description

EXCH

Perform active/standby changeover of SDTB board

RST

Reset ETSN board

Figure 83 shows the layout of the ETSN. FIGURE 95 ETSN LAYOUT

There is no DIP switch or jumper on ETSN. ETSN provides no external interface. Figure 96 shows the working principle of ETSN.

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Functions

Technical Indices

Backboard

Precautions

FIGURE 96 ETSN BOARD WORKING PRINCIPLE

128K

256 pairs of 32 HWs

16 sets of

ETSN

ETSN provides unblocked switching network with the T-T-T structure. Switching capacity is 64K×64K timeslots, and the rate of the PCM bus is 32 Mbps. Two ETSN boards work in active/standby mode. Active and standby ETSNs exchange information through one Ethernet channel. MPB controls the connection of the T network through the control plane. Backup RS485 channel is provided. ETSN consists of these parts: CPU sub-card control part, digital switching array part, power conversion part, LVDS interface part, Ethernet and RS485 part, frame synchronization adjustment part. ETSN provides switching function for the 128k circuit timeslots. Switching network connects to TFI board in the local shelf through a backplane with 576M LVDS. ETSN supports hot swapping. ETSN can provide the unblocked circuit switching of 128K×128K. ETSN has no backboard. Strictly observe operation regulations to prevent electrostatic damage to large scale integrated circuits on the board.

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Panel

Advanced TDM Switch Network Board (STSN) Figure 97 shows the panel of STSN. FIGURE 97 STSN PANEL

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ZXWN MGW Media Gateway Hardware Description

Indicators

Buttons

There are 4 indicators on STSN panel, as shown in Table 79. TABLE 79 INDICATORS ON THE ETSN PANEL

Indicator

Color

Meaning

Description Flashing at 5Hz: indicates board is power on

RUN

Green

Running Indicator

Flashing at 1Hz: indicates board is running normally Keeping flashing at 5Hz: indicates power-on fails

ALM

Red

Alarm indicator

ENUM

Yellow

Board Extraction Indicator

ACT

Green

Active/Sta ndby indicator

On: Alarm exists on board. Off: No alarm exists on board. When the board is inserted into a slot, by default the ENUM indicator is on. That is, during the power-on process of the board, when the software is not started, the ENUM indicator is on; when the software detects ENUM signal and finds that extractor is closed, ENUM indicator turns off to indicate that the system starts to work. If the board needs to be extracted, the extractor should be opened first, and press the micro-switch to generate an ENUM interruption signal to the CPU. After the CUP exits the working status due to system control, the ENUM indictor will be on (it is necessary to keep querying whether the ENUM signal changes at the same time) to indicate that the board can be extracted (if the ENUM indictor is not on, do not forcibly extract the board; otherwise, service loss will be caused). If the maintainer recloses the extractor instead of extracting the board, the software can successfully query the changes of the ENUM signal, and therefore knows that the extractor has been re-closed. The software restarts to go into the working status, and the ENUM indictor will be off On: board is active Off: board is standby

Table 80 shows the buttons on ETSN panel.

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Layout

DIP Switches and Jumpers

External Interface

Working Principle

TABLE 80 BUTTONS ON THE STSN PANEL

Name

Description

EXCH

Perform active/standby changeover of TSNB board

RST

Reset TSNB board

Figure 98 shows the layout of the STSN. FIGURE 98 STSN LAYOUT

There is no DIP switch or jumper on STSN. STSN provides no external interface. The STSN board provides 256k circuit timeslot switching for the system, and the switching network transfers it to the fiber interface board TFI in the same shelf through the backboard of 576M LVDS.

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Functions

Technical Indices

Backboard

Figure 99 shows the working principle of STSN. FIGURE 99 STSN BOARD WORKING PRINCIPLE

STSN provides unblocked switching network with the T-T-T structure. Switching capacity is 256K×256K timeslots, and the rate of the PCM bus is 32 Mbps. Two STSN boards work in active/standby mode. Active and standby STSNs exchange information through one Ethernet channel. MPB controls the connection of the T network through the control plane. Backup RS485 channel is provided. STSN consists of these parts: CPU sub-card control part, digital switching array part, power conversion part, LVDS interface part, Ethernet and RS485 part, frame synchronization adjustment part. ETSN provides switching function for the 256k circuit timeslots. Switching network connects to TFI board in the local shelf through a backplane with 576M LVDS. The power consumption is 62W. STSN supports hot swapping. ETSN can provide the unblocked circuit switching of 256K×256K. STSN has no backboard.

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Precautions

Strictly observe operation regulations to prevent electrostatic damage to large scale integrated circuits on the board.

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Introduction

Chapter

Contents

Panel Description

4

Integrated Alarm Box Overview This chapter describes the appearance, functions and principle of the integrated alarm box. This chapter includes the following topics. TABLE 81 TOPICS IN CHAPTER 4

Topic Title

Page No.

Appearance

161

Functions

163

Principle

164

Appearance The panel of the integrated alarm box is shown in Figure 100.

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Indicators

LCD

Keyboard

FIGURE 100 INTEGRATED ALARM BOX PANEL

There are 4 different color indicators: red, blue, yellow, and green that indicate the level of alarm from higher to lower. The corresponding alarm indicator will light up when an alarm is generated. Environment alarm is processed as a certain level alarm, and no separate alarm indicator is set for it. The integrated alarm box implements alarm display functions with LCM, the dimension of LCM is lattice graphics display mode, and the front size is controlled by software to display different type of information. The light on LCD is usually closed just to extend the life of light. The light is powered on to enhance the effect of display on pressing key or displaying information. There are some keys on the alarm box, which implements operation & maintenance functions with LCM.  

Menu Key “M”: selecting menus. Left arrow key: moving cursor to left when inputting numbers.

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Chapter 4 Integrated Alarm Box

Overview 

Functions

Right arrow key: moving cursor to right when inputting numbers.



Up arrow key: selecting menus, roll up or plus “1”.



Down arrow key: selecting menus, roll down or minus “1”.



Cancel key “C”: return menu or clear up.



Confirm key “OK”: confirming the operation.

Functions The integrated alarm box has the characteristic of the previous alarm box with extra advantages & features special. Having distinct advantages, powerful functions and beautiful appearance, the integrated alarm box can meet the new requirements and future development requirements. The alarm box employs the modular integrated design, which not only implements basic alarm functions but also implements enhanced functions to meet other requirements by using plug-in or components according to different configurations According to different configurations, the integrated alarm box can implement the following functions to meet the requirements of different products: 









Audio and visual alarms: The alarm box receives the alarm information from the OMC server, and the indicators on the alarm box indicate the severity of the alarm information. The alarm box also can give alarms through voice ringing of DC electrical bell. Hearing alarms: The voice management function of the background can record, edit and pre-play the voice, and download the voice file to the FLASH of the alarm box. Compared with the simple audio frequency alert tone, the alarm function with voice is more visual, diversified, and needs less hardware and software processing. Display: The integrated alarm box displays the current alarm information, which includes locus, date and detailed content of the alarm. Transmission: The integrated alarm box transmits the current alarm information to the maintenance persons. through wireless or lineate medium Query: The integrated alarm box receives remote query orders, and transmits the current alarm information or parameters of equipment working status to the remote end.

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Schematic Diagram 











Multi-office: various communication equipments in one switching office can use one alarm box to indicate alarm information for different equipments. Operation& maintenance: the alarm box can set parameters, diagnose itself and can be queried with the man-machine interface. Remote end: the alarm box can be put in an office, which is hundred meters away from the equipment room. GPS time choice: by using the time choice function of GPS receiver, the alarm box provides exact time or steady synchronous clock reference for equipments. Interface: the alarm box not only provides Ethernet interface, but also provides RS232 and RS485 serial interfaces to connect to foreground or background directly. The alarm box can be used at both the locale and the remote end. When used at the remote end, the alarm box connects with the remote server, such as being used for the OMC system or the integrated maintenance center. Through PLMN/PSTN, the remote alarm box can receive and display alarm information from some local alarm boxes or receive the local alarm files, and can send commands to the locale. Furthermore, the remote sever receives alarm information from the locale through data net, then the remote alarm box displays the alarm information.

Principle The principle of the integrated alarm box is shown in Figure 1.

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Chapter 4 Integrated Alarm Box

Principle Description FIGURE 1 INTEGRATED ALARM BOX PRINCIPLES

The integrated alarm box is composed of ALMP, ALMK and ALML. 





ALML card: Includes alarm indicators with 4 levels (in 4 colors) and corresponding drive circuits. ALMK card: Includes key-press, adaptive socket of LCS module, providing power for LCD module to work normal and negative circuit for LCD display. The card and LCD module can be cancelled if the LCD is not necessary. ALMP card: main processor card completes alarm information receiving and processing, generates and transmits audio & visual alarms. It consists of control circuit, interface circuit, and acts as a mother board for connection of ALML card ALMK card.

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Introduction

Chapter

Contents

5

MGW Inner Cables Overview This chapter describes the structure and layout of inner cables for MGW cabinet. This chapter includes the following topic: TABLE 82 TOPICS IN CHAPTER 5

Topic

Page No.

MGW Inner Cables

168

System Clock Cable

168

Line Reference Clock Cable

169

IP Access Cable

169

Inter-connection Cables

169

PD485 Cable

169

OMC Ethernet Cable

169

Fan Monitoring Cable

170

Interconnection Fiber for the TDM Switching Network

170

Interconnection Fiber for the Packet Switching Network 171

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167

Overview

Signal Features

MGW Inner Cables ZXWN MGW system has following inner cables: 

System clock cable



Line reference cable



IP access cable



Interconnection cables between control panels



PD485 cable



OMC Ethernet cable



Fan monitoring cable

System Clock Cable System clock cable distributes synchronous clock signal to various shelves inside MGW system. Cable end A connects to CLKOUT interface on back module RCKG1/RCKG2. Cable end B connects to CLKIN interface on back-module RU1M1/RU1M2/RU1M3. Signal flows from cable end A to cable end B. Following are signal features of system clock cable:  

6M refers to 16MHz clock signal when the duty ratio is 50% Required time sequence relation between 8K frame header and 16M clock is as follows: 



 

8K frame header is in form of negative pulse; the rising edge of the 16M clock starts the falling edge of the 8K frame header. Width of the negative pulse (8K frame header) is one 16M cycle. Width of one frame is 125μs.

PP2S signal meets the following requirement: 

PP2S is in form of negative pulse with a pulse cycle of 2s.

Width of the negative pulse is one CHIP clock (1.2288MHz) cycle.

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Chapter 5 MGW Inner Cables

Line Reference Clock Cable Line reference clock cable implements connection between service module and system Clock Generating Module (CLKG) and sends 8K reference clock signal to system clock module for phase-lock selection and generate system synchronous clock. Cable end A connects to 8KOUT/DEBUG-232 interface on backboard RGIM1/RDTB/RSPB which provides the reference and 8KOUT/ARM232 interface on backboard RMNIC. Cable end B connects to 8KIN1 and 8KIN2 interface on backboard RCKG1. Signal flows from service module to Clock Generating Module (CLKG) and transmitted as 8K frame header extracted from line.

IP Access Cable IP access cable implements Ethernet cable interface for IP access of external interface module. Cable end A connects to FE interface on backboard RMNC. Cable end B provides external standard RJ45 anode interface. Signal transmits as 100M fullduplex Ethernet signal.

Inter-connection Cables Inter-connection cables implement mutual Ethernet between Control shelf CHUB to Level-1 switching Cable end A and B connects to FE_C interface on RUIM1/RUIM2/RUIM3. Signal transmits as 100M Ethernet signal.

connection shelf UIM. backboard full-duplex

PD485 Cable PD485 cable is used for RS485 communication between OMP and power distribution module. Cable end A connects to PD485 interface on back-module RMPB. Cable end B connects to RS485 interface on power distribution module PWRDB. Signal flow is bidirectional and transmitted as half-duplex RS485 signal.

OMC Ethernet Cable OMC Ethernet cable is used for communication between OMP and background. Cable end A connects to GPS485 interface on back-module RMPB. Cable end B provides a standard external RJ45 anode interface. Signal transmits as 100 M full duplex Ethernet signal.

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Overview

Cable Connection

Fan Monitoring Cable Fan monitoring cable allows PWRD module to monitor the running status of fans in fan module. Cable end A connects to RJ45 connector in rear of fan module. Cable end B connects to fan box interface (1~4) on PWRDB board. Signal flows from fan module to power distribution module and transmitted as level signal for monitoring fan.

Interconnection Fiber for the TDM Switching Network The interconnection fiber for the TDM switching network is used to connect the data over TDM in the resource shelf to the circuit switching shelf for T network switching. In generally, 4 fibers are needed to implement a group of fiber connection with active/standby protection. Figure 101 shows the connection method. FIGURE 101 INTERCONNECTION FIBER FOR THE TDM SWITCHING NETWORK

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Overview Technical Indices

Cable Connection

The range of n in Sn is 1~8; m in Sm is 1 or 4.

The signal is 640M optical signal.

Interconnection Fiber for the Packet Switching Network The interconnection fiber for the packet switching network is used to connect the packet data in the resource shelf to the circuit switching shelf for packet switching. In generally, 8 fibers are needed to implement a group of fiber connection with optical interface protection both within the board and between boards. Figure 102 shows the connection method. FIGURE 102 INTERCONNECTION FIBER FOR THE PACKET SWITCHING NETWORK

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Technical Indices n in SDn is 1, 3, 5 or 7.

The signal is 1000M optical signal.

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Introduction

Chapter

Contents

6

MGW Outer Cables Overview This chapter describes the structure and layout of outer cables for MGW cabinet. This chapter includes the following topics. TABLE 83 TOPICS IN CHAPTER 6

Topic

Page No.

Temperature and Humidity Sensor Cable

176

Smoke Sensor Cable

177

Infrared Sensor Cable

178

Entrance Control Sensor Cable

179

75Ω E1 Trunk Cable

180

120Ω E1 Trunk Cable (3×16-Core)

183

120Ω E1 Trunk Cable (11×4-Core)

186

100Ω T1 Trunk Cable (50-Core)

189

100Ω T1 Trunk Cable (6×8-Core)

192

-48V Power Cable

195

Shelf Power Cable

197

Fan Shelf Power Cable

198

Cabinet Door Grounding Cable

199

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Overview

Structure

Topic

Page No.

Protection Ground Wire Junction Cable

200

Inter-Cabinet PD485 Interconnection Cable

201

Interconnection Fiber on the User Plane

202

Temperature and Humidity Sensor Cable Temperature and humidity sensor cable connects temperature and humidity sensor with PWRD monitoring module to monitor ambient temperature and humidity. A moisture sensitive capacitor is used as humidity core in temperature-humidity sensor. Electrical signals of temperature-humidity sensor are converted into frequency signals after linear processing by a single-chip computer. Then signals can be directly collected by computer without A/D conversion. Wall-mounted installation, with hidden cabling slot is available at back of transmitter. Figure 103 shows the structure of temperature and humidity sensor cable. FIGURE 103 STRUCTURE OF TEMPERATURE AND HUMIDITY SENSOR CABLE

Label

D

Label

C

End A

End B Direction C

Direction D

Pin

Hole

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Overview Technical Indices

Structure

Table 84 shows the technical indices of temperature and humidity sensor cable. TABLE 84 TECHNICAL INDICES OF TEMPERATURE AND HUMIDITY SENSOR CABLE

Item

Technical Indices

Humidity precision

±3%RH, @25°C, 25%RH to 95%RH (typical)

Temperature precision

±0.5°C, @25°C

Output (0°C to +50°C, 0%RH to 100%RH)

1 kHz to 1.5 kHz square wave 1 kHz to 2 kHz square wave

Supplied voltage

5 V to 12 V DC

Working temperature

-20°C to +80°C

Smoke Sensor Cable Smoke sensor cable connects smoke sensor and PWRD monitoring module, to monitor environmental smoke signals. Exploration room of smoke sensor is made up of herringbone maze structure and can detect smoke at initial smoldering stage or generated after fire breaks out. When smoke enters the explorer, light source scatters and light-receiver senses the intensity of the light. When intensity reaches preset threshold value, explorer responses with fire alarm signal, lighten its own red color fire-alarm-indicator to confirm firing, and meanwhile output alarm signal for peripheral devices. Figure 104 shows the structure of smoke sensor cable.

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Overview Technical Indices FIGURE 104 SMOKE SENSOR CABLE STRUCTURE

Table 85 shows the technical indices of Smoke sensor cable. TABLE 85 TECHNICAL INDICES OF SMOKE SENSOR CABLE

Item

Technical Indices

Working voltage

24VDC

Alert current

≤25 μA

Working temperature

-10°C to +55°C

Relative humidity

< 95%

Alarm current/Output current

< 65mA

Signal output

Two-wire system

Radiation source

Strength of Am 241 is lower than 2.59×104 Bq (0.7μci)

Dimensions

Sensor: 100×39.9 mm, base: 104×12 mm

Cable connection mode

Two-wire system: positive pole of the power supply-(3), signal-(1)

Installation type

Ceiling mounting mode. Protection area (H