NANT-A

Combined NT Unit version A

1 Identification 2 Introduction

NANT-A

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3 Features and Ap Applica licattion No Notes 4 General De Description

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5 Functional Description 6 External In Interfaces

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7 Alarm Control Unit

-7

8 Physical Description 9 Craft Cable Connector 10 Power Su Supply

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NANT-A 1

Combined NT Unit version A

Identification Table 1 provides identification of the NANT-A Table 1: Identification of the NANT-A

2

Part Number

Mnemonic

Name

3FE 26698 AAAA

NANT-A

Combined NT Unit version A

Introduction This document describes the Combined NT Unit version A (NANT-A) which is part of the Intelligent Services Access Manager (7302 ISAM).

3

Features and Application Notes The NANT-A:

• • • • • •

Is used in a Flexible Density (FD) 7302 ISAM and a 7330 FD subrack. Provides the management and control interfaces. Provides centralized alarm handling and reporting. Has one fixed 1000BASE-X port (SFP only) and one 1000BASE-X combo port (SFP or RJ45). Supports fiber bending. Supports:

• the LT boards in a 7302 FD subrack  • a combination of LT boards and REM/SEM units in a 7330 FD subrack. • • • • •

Supports up to 16 K MAC address entries with hardware assisted aging. Supports NT redundancy from 7302 ISAM R3.2 onwards. Supports NT I/O. Supports back pressure at half duplex and IEEE802.3x flow control at full duplex. Operates within the temperature range of -40 °C to +65 °C.

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Combined NT Unit version A 4

NANT-A

General Description The NANT-A contains the control functions of the ISAM 7302 FD and 7330 FD. It handles the xDSL, the chassis and the switching data path. The NANT-A provides management interfaces (LCMI and LEMI) to the outside world and control interfaces towards other subsystems (LT board, NT I/O board). Figure 1 shows the position of the NANT-A in the system. Fig. 1: Position of the NANT-A in the system Alarm interfaces

Management-A interface

LT #1

AC U

LT #2 NT-A (PBA-NANT-A)    k   r   o   s   w  e    t   e   c   a    f    N    /   r    k   t   e   n   n    i    l    I   p    U

  s   e   )   c   L    f   r    S   e    t    D   n    i   x   r   e   N   s   (    U

NTIO

NT-B (PBA-NANT-A)

LT #15 LT #16

Management-B interface

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Combined NT Unit version A

Functional Description Figure 2 shows the different functional blocks of the NANT-A. Fig. 2: Functional Blocks of the NANT-A AAAA

FIM

PBA-NANT-A MCSD

NT's Alarm-Cut-Off LEDs Alarm-Cut-Off Switch

[ACOLED] [ACOS]

ACU

BIM [REFOUT]

SYNC-REFerence Output Clock [LT-Ref-Clock(0:17)]

[ALMOUT]

ALarM control OUTputs

[ALMIN]

ALarM status INputs

[HIPC]

NT-NT Communication Itf NT-NT Switch-Over Itf NT's Shelf Activity Status NT's Serial IO Itf NT's Backplane (NTIO) Serial Mgt Itf

NT's Front SYStem LEDs

[SYSLED]

NT's Front Uplink-ITF LEDs

[ITFLED]

Local Craft-Management Itf Local Ethernet-Management Itf

[LCMI] [LEMI]

[SOI] [SAS] [SIO] [BSM]

NT's Front-Uplink Interface #0

[FUI#0]

[LT0]

LT's Serdes Interface 0

NT's Front-Uplink Interface #1

[FUI#1]

[LT15] [BUI0]

LT's Serdes Interface 15 NT's Back-Uplink Interface 0

CISC

NUTS

[BUI3] [BUI4/LT17] [BUI5/LT16]

NT's Back-Uplink Interface 3 NT's Back-Uplink Itf 4 or LT's Serdes Itf 17 NT's Back-Uplink Itf 5 or LT's Serdes Itf 16 SMAS-Powering Interface NTIO/NTAP-Powering Interface NT's Power Supply Interface

PSIM

The different functional blocks are:

•

  MCSD

The Master Clock-Synchronization and -Distribution (MSCD) provides a HW-stuffable interface and synchronization circuitry (Generic Equipment Timing Source (GETS)) to lock the ISAM system clock onto a very accurate received BITS reference timing signal. This ISAM system clock reference will be forwarded to all LT boards within the same ISAM subrack.

•

ACU

The Alarm Control Unit (ACU) provides all the necessary alarm control and interface circuitry for accumulating system alarms, driving relay contacts for alarm outputs and  provisioning visual alarm indications.

•

  CISC

The Centralized ISAM System Controller (CISC) provides all the On-Board Controller (OBC) functions:

• centralized control and management approach •  processing capabilities for dropped GE packets/frames from the GE switching module.

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NANT-A

  NUTS

The Network/User Transport and Switching (NUTS) provides the interface and switching circuitry for the front and back related uplink/network interfaces to/from the LT slots.

•

  PSIM

The Power Supply Interface Module (PSIM) converts the rack power supply into all necessary voltages as required by the used components.

•

FIM

The Frontplate Interface Module (FIM) at the front stiffener holds some physical interface connectors, a button and some LEDs.

•

BIM

The Backplane Interface Module (BIM) constitutes all the necessary control, management, and data plane related interfaces.

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Combined NT Unit version A

External Interfaces

External Interfaces Accessible via Front Panel The following external interfaces are accessible via the front panel: Communication Interfaces

2 communication interfaces are available via the front panel:

• 1 x 1000 BASE-X SFP port • 1 x Combo-Port: • 1 x 1000 BASE-X SFP-Port or 

• 1 x 10/100/1000 BASE-T Port (RJ45 connector) Management Interfaces

The following management interfaces are available via the front panel:

• Local Craft Management Interface (LCMI, RJ45 connector) • Local Ethernet Management Interface (LEMI, RJ45 connector) • An Alarm Cut-Off Switch (ACOS) and LED (ACOLED) The electrical UPLINK interface can also be used as Inband Ethernet Management interface.

External Interfaces Accessible via the Back Plane The following external interfaces are accessible via the back plane:

• • • • • • • • • • • • •

ALarM control OUTputs (ALMOUT) ALarM status INputs (ALMIN) Syncronization REFerence OUTput clocks (REFOUT) towards the LT's  NT's Backplane (= NTIO) Serial-Management interface (BSM) Shelf Activity Status (SAS) interface  NT’s Serial IO interface (SIO) Ethernet Configuration and Management Interface (ECMI) Inter Integrated Circuit Management Interface (I2C) LT interfaces (16/18) (LTS)  NTIO uplinks (6) (BUI) SMAS power supply interface  NT board power supply interface  NT I/O module power supply interface

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Alarm Control Unit The Alarm Control Unit (ACU) provides:

• • • •

a central point for internal (= subrack) related alarm collection. a central point for external (= CO) related alarm collection and control. the necessary circuitry for rack alarm control and visualization. an Alarm Cut Off (ACO) capability to the subrack.

The following ACU functionality is provided:

• • • • •

Fan unit alarm interface (2 inputs) Central Office alarm interface (5 miscellaneous inputs) Circuit breaker alarm (1 input) Door alarm (1 input) Subrack alarm lamp interface

These ACU interfaces can be found on the backplane of the subrack, for more information refer to the  FD Hardware Installation Manual.

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Combined NT Unit version A

Physical Description Figure 3 shows the side and front view of the NANT-A. Fig. 3: View of the NANT-A

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NANT-A

Dimensions: The dimensions of the NANT-A are:

• Height: 405 mm • Width: 30 mm • Depth: 205 mm

System Status LEDS Figure 4 shows the system status LEDS of the NANT-A. Fig. 4: System Status LEDs PWR ACT

ALM

Table 2 gives the definitions of the system status LEDS on the NANT-A. Table 2: System Status LED Definition Port

Description

PWR

• • • • • •

 ACT

 ALM

Green - Power present Off - No power  Green - Active Off - Stand-by Red - Alarm condition exists Off - No alarm condition exists

Port LEDs Table 3 gives the definitions of the port LEDS on the NANT-A. The LEDs for the RJ45 port are embedded in the RJ45 connector and indicate the speed and the link/activity status. These LEDs will be turned off if the respective combo SFP  port is working. Each SFP port has a respective single LED associated with it to visualize the link and activity status.

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NANT-A

Combined NT Unit version A Table 3: Port LED Definition Port

Description

10/100/1000Base-T Ports LED (built-in RJ45)

Speed LED

• • •

Green - 1000M Yellow - 100M Off - 10M or no link

Link / Active LED

• • • SFP Ports LED

Green - link Blinking green - transmitting or receiving packet on this port Off - No link detected at this port

Link / Active LED

• • •

Green - link up at this port Blinking green - transmitting or receiving packet i n link up state Off - No link detected at this port

Alarm Cut Off  The NANT-A is equipped with an Alarm Cut O ff switch and an Alarm Cut Off indication LED (refer to Figure 3).

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Craft Cable Connector   The Craft cable connector is a male RJ45 connector. Fig. 5: RJ45 Connector 

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1

Table 4 shows the connector pinning (both RJ45 and DB9) for the Craft cable connector. Table 4: CRAFT Cable Connector  Signal Name

Type

RJ45 Pin Nr.

DB9 Pin Nr.

Description

DCD

O

2

1

“Data Carrier Detect”

RXD

O

5

2

Craft interface receive data

TXD

I

6

3

Craft interface transmit data

DTR

I

3

4

“Data Terminal Ready”

EG

Ref

4

5

Electrical Ground or “Signal Ground”

-

-

8

-

-

CTS

O

7

8

“Clear To Send”

RI, DSR

O

1

9

“Ringing Indicator” and “Data Set Ready”

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NANT-A

Power Supply The NANT-A is compatible with -48 Vdc nominal and -60 Vdc nominal power supply systems.

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