Ciena Booklet

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Publisher Acknowledgement: This is the first edition of this book. Please notify us of any acronyms we may

have missed by submitting them via the form at www.ciena.com/acronymsguide. We will be happy to include them in further editions of the guide. For additional

information on Ciena’s Carrier Ethernet or Optical Communications Certification programs please contact [email protected]

Table of Contents Numerics..................................................................1

M................................................................................15

A....................................................................................1

N.................................................................................17

B....................................................................................2

O.................................................................................18

C....................................................................................3

P..................................................................................20

D....................................................................................5

Q.................................................................................22

E....................................................................................7

R.................................................................................22

F.....................................................................................9

S.................................................................................24

G.................................................................................10

T..................................................................................27

H.................................................................................11

U.................................................................................28

I...................................................................................12

V.................................................................................29

J.................................................................................14

W................................................................................30

K.................................................................................14

X.................................................................................30

L.................................................................................14

Z.................................................................................31

Acronym Guide

ADI

Asset Distribution Interface

2F

ADP

Actual Departure Potential; Automatic Data Processing

Numerics 10 GbE

10 GFC 100G

16-QAM 3D 3G

40G 4C 4F

5C

A

ADM

Two-Fiber

10 Gigabit Ethernet

10 Gigabit Fibre Channel (Same as FC1200)

ADSL

16 (points) Quadrature Amplitude Modulation

AE

ADT

100 Gigabits

AES

Three Dimensional 3rd Generation

AESA

40 Gigabits

Consortium of Intel, IBM, Matsushita, and Toshiba

AFI

AFM

Four-Fiber

AGC

Consortium of Intel, Sony, Matsushita, Toshiba, and Hitachi

AGGR AID

A/D

Analog-to-Digital

AAL0

ATM Adaptation Layer Type 0

AIN

ATM Adaptation Layer 2 Transport

AINS

AAL

AAL1 AAL2

ATM Adaptation Layer

ATM Adaptation Layer Type 1

AAL3/4

ATM Adaptation Layer Type 3 and 4

ABR

Available Bit Rate

AAL5 ABT AC

AC-3

ACAC ACEG

AIM

ATM Adaptation Layer 5

ACK Acknowledge ACL

AM

ACR

Allowed Cell Rate

AMF

Association Control Service Element

AMP

ACS ACSE

ACSS ACT

ADC

AMI

Automatic Channel Shutdown; Alarm Correlation and Suppression

AMS

Automatic Channel Shutdown Suppression; Automatic Channel Shutdown State

ANSI AO

Active

AOD

Analog-to-Digital Converter; Add/Drop Coupler

APC

1

Aggregate

Access Identifier; Application Identifier

Auto Image Management; Active Inventory Map Advanced Intelligent Network Automatic in Service State Alarm Indication Signal

Alarm Indication Signal Decay Period

Alarm Indication Signal Integration Period Alarm Indication Signal - Line

VT Alarm Indication Signal

Alarm Cutoff Acquire

APS Mode Mismatch Failure

Automatic Gain Control; Access Group Controller

AIS-V

ACO

ACQ

Authority and Format Identifier

Alarm Indication Signal - Path

ALS

Active Control List; Access Control List

ATM End System Address; ATM End Station Address

AIS-P

AIS-S

Alternating Current Equipment Ground

Advanced Encryption Standard; Application Environment Specific

Additive Increase Rate

AIS-L

Actual Call Admission Control

Automation Engine; Automation Environment

AIR

AISIP

Audio Coding Revision 3

Actual Departure Time; Automatic Data Transmission

ATM Inter-Network Interface

AISDP

Alternating Current; Administrative Complex; Atomic Clock

Asymmetric Digital Subscriber Line

AINI

AIS

Advanced BiCMOS Technology

Add/Drop Multiplexer

Alarm Indication Signal - Section

Automatic Laser Shutdown; Application Layer Service Amplitude Modulation; Application Manager APS Mode Mismatch Failure

Access Method Interface; Alternate Mark Inversion Amplifier; Amperes

Asset Management System; Agent Management System

American National Standards Institute Autonomous Output

Advertising on Demand

Angled Physical Contact

APD API

APS

APSBF APSCM APSMM

Avalanche PhotoDiode

AU-n

Automatic Protection Switching

AVC

Application Program Interface

Automatic Protection Switching Byte Failure

Auxiliary

AWG

American Wire Gauge

AWGN

Automatic Protection Switching Channel Mismatch

B

Automatic Protection Switching Mode Mismatch

Administrative Unit n

AUX

B/P

Attribute Value Change

Additive White Gaussian Noise

Backplane

Alarm Reporting Control

B3ZS

Bipolar With 3-Zero Substitution

ARPU

Average Revenue per Unit (or User)

B8ZS

Bipolar With 8-Zero Substitution

ASAP

Alarm Severity Assignment Profile

BB

Broadband

BBER

Background Block Error Ratio

ARC ARP AS

ASCII ASD ASE ASI ASIC

ASN.1 ASP

ASYNC AT

AT&T ATA

ATAF

ATAG

Address Resolution Protocol

B6ZS

Autonomous System

BA

American Standard Code for Information Interchange

BBE

BBE-RS

Access Security Device

Amplified Spontaneous Emission; Application Service Element Asynchronous Serial Interface; Asynchronous SCSI Interface

BC

Abstract Syntax Notation One

B-DCS

BCD

BCST

Application-Specific Integrated Circuit

Applications Service Provider; Average Selling Price

BDFB

Asynchronous

Bipolar With 6-Zero Substitution Booster Amplifier

Background Block Error

Background Block Error Regenerator Section (an SDH regenerator section error) Business Continuity; Broadcast

Binary-Coded Decimal

Broadcast

Broadband Digital Cross-connect System

Battery Distribution Fuse Bay; Battery Distribution Fuse Board

Advanced Technology

BE

Advanced Technology Attachment

BELLCORE BELL Communications Research, Inc.

Autonomous Tag

BE-RS

Alarm Traffic Controller

BER-SF-P Path Signal Failure BER

American Telephone and Telegraph Company

BECN

ATM Test Access Function

BER

Block Error; Best Effort

Backward Explicit Congestion Notification Bit Error Rate

Block Errors-Regenerative Section

ATAGSEQ Autonomous Tag Sequence

BER-SD-P Path Signal Degrade BER

ATDMA

BERT

Bit Error Rate Test

BGP

Border Gateway Protocol

BICI

Broadband Inter-Carrier Interfaces; B-ISDN Inter-carrier Interface

ATC

A-TDMA ATM

Asynchronous Time Division Multiple Access

BFP

Advanced Time Division Multiple Access

BGP4

Asynchronous Transfer Mode

ATM SAM ATM Service Access Multiplexer ATMVCL

ATM Virtual Channel Link

BICSI

ATTN

Attenuator

BIOS

ATMVPL AU/AU-x AUG AUI

ATM Virtual Path Link

BIP

Administrative Unit

Administrative Unit Group

B-ISDN

Autonomous Unit Interface

2

Back Facet Power; Basic Format Packet Border Gateway Protocol, version 4

Building Industry Consulting Services International Basic Input/Output System

Bit Interleaved Parity; Breaker Interface Panel Broadband ISDN

BIT

Built-In Test; Binary Digit

CA

Bits per Symbol

CAC

BITS

Building Integrated Timing System

BLSR

Bidirectional Line Switched Ring

bits/sym BML BNC

BOC

BOD BOL

BOM

CAB

CAD

Business Management Layer

CALA

Bayonet Neill-Concelman British National Connector

CAM

Bell Operating Company

BP

Bill of Materials

Capital Expenditure

CATV

Community Antenna Television; Cable Television

CAS

Bootstrap Protocol

Broadband Passive Optical Network

CBDS

Baseline Privacy Interface Plus

CBN CBR

Backplane Protocol

bps

bits per second

BPT

Band Pass-Through

BPV

CB, C/B

Backplane

B-PON

BPSR

CC

Bidirectional Path Switched Ring

CCAF CCB

BiPolar Violations

CCC

B-RAS

Broadband Remote Access Server

BRM

Backward RM

CCCG

Board Support Package

CCDF

BRI

BSC BSP

BSS BT

Board SC Connector

Build Transfer Operate

BW

BWDM BYT

C C

C/I

C/N

C2O

CCI

British Telecom; Burst Tolerance

BTO

BTU/hr

CCC-PC

Business Support System Beginning Tag

BTS

CCC768

Basic Rate Interface

Btag BTM

Content Addressable Memory

CAPEX

CAP

Beginning of Life

Baseline Privacy Interface

BPP

Computer Aided Design

Central America and Latin America

Bandwidth on Demand

BPI

BPI+

Connection Admission Control; Call Admission Control

CANARIE Canadian Network for Advancement of Research

BONDING Bandwidth ON Demand Interoperability Group BOOTP

Content Archived; Carrier Access

Conformity Assessment Body

CCITT

Bits Termination Circuit Pack

CCK

CCW

Business Telecom Services

CDE

British Thermal Unit per hour Bandwidth

Total Byte Count

Carrier-to-Interface Ratio

Constant Bit Rate

Cross Connection; Clear Channel; Calling Centers

Call Control Agent Function, IN block Configuration Control Board Cross Connect Controller

Cross Connect Fabric with 768x768 STS-1 capacity

Cross Connection and Control Group

CCC Processor Card

Complementary Cumulative Distribution Function Content Control Information

Consultative Committee on International Telegraphy and Telephony Complimentary Code Keying Counterclockwise

Common Desktop Environment (UNIX)

Contracted Deadline Potential

Compact Disc Read Only Memory Connection Dropping Threshold

CDTS

Chromatic Dispersion Test Set

CDVT

Cell Delay Variation Tolerance

CD-WO

3

Common Bonding Network

Call Detail Recording; Clock and Data Recovery

CDV

Cable to Optic

Connectionless Broadband Data Service

CDR CDT

Carrier-to-Noise Ratio

Circuit Breaker

Code Division Multiple Access

CD-ROM Celsius; Critical

Channel Associated Signaling

CDMA CDP

Band Wavelength Division Multiplexer

Competitive Access Provider

Cell Delay Variation

Compact Disc - Write One

CE

Consumer Electronics

CEA

Consumer Electronics Association

CER

Cell Error Ratio; Codeword Error Ration

CELP CES

CEV

CFDM CFG

CFM CFU CH

CME CMF

Code Excited Linear Predictive

CMIP

Circuit Emulation Service

CMIS

Controlled Environmental Vault

Command Frequency Division Multiplexer

CMISE

Configuration

CMR

Cubic Feet per Minute

CMS

Cooling Fan Unit Channel

CHASEH

Environmentally Hardened Chassis

CI

Compact Intelligence; Craft Interface; Customer Interface; Certified Integrator

CID CIF

CIFS CIM

CINOT CIT CL

CLASS CLEC CLEI

CLEITM CLFI CLI

CLIP

Common Internet File System

CNMP

CNIR

Client Interface Module

CNR CO

COAX

COBRA

Coaxial Cable

Copper and Optical Broadband Remote Access Coder/Decoder

Collision Count

Central Office Equipment

Central Office Layout Design

CONDTYPE Condition Type

Common Language Facility Identifier Command Line Interface

CONS

Connection Oriented Network Service

COPS

Common Open Policy Services

COO

Calling Line Identification Presentation

CoS

Connectionless Transport Protocol

COTS

CORBA

Common Language Location Identifier Connectionless Network Service

COT

Cell Loss Ratio

CP

cm centimeter CM-CLI

Carrier-to-Noise Ratio

Central Office

COLL

COLD

Common Language Equipment Identifier

Cell Loss Priority

CM

Customer Network Management Portal

Common Language Equipment Identifier

COS

CLTP

Carrier-to-Noise/Ingress Ratio

Change of Frame Alignment

Competitive Local Exchange Carrier

Connectionless Network Layer Protocol

CLR

Core Network Integrated Planning System

COFA

COE

CLNP CLP

Clock Multiplier Unit

CODEC

Calling Line Identification Restriction

CLNS

Call Management Server

Custom Local Area Signalling Services

CLIR CLLI

Cell Misinsertion Rate

Container C-11=1,544 Mb/s; C-12=2,048 Mb/s; C-2=6,312 Mb/s; C-3=34,368 Mb/s and 44,736 Mb/s; C-4=139,264 Mb/s

Client Interface

Coupling Loss; Cleared

Common Management Information Service Element

C-n

CNIPS

Craft Interface Terminal; Craft Interface Tool

Common Management Information Services

Cable Modem Termination System

Circuit Identification; Craft Interface Device

Ciena Optical Transport System

Common Management Information Protocol

CMTS CMU

CHASYNC Chassis with Sync

Compressed Multiplication Equipment

Channel Mismatch Failure; Client Management Frame

Control Module; Cable Modem

Control Module Command Line Interface

CPCI

4

Chief Operating Officer

Common Object Request Broker Architecture

Class of Service; Common Object Services; CORBA Object Services Class of Service

Central Office Terminal

Commercial off the Shelf

Circuit Pack; Control Processor; Connection Provisioner; Call Processing; Customer Premise

Compact Peripheral Component Interconnect

CPD CPE

C-Plane CPLD CPM

CPRM CPT

Common Path Distortion

CRS CRT

CRx Line CS

CSA

CSC

CSD

CSES Csh

CSH

CTx Line CUG

Content Protection for Recordable Media

CV

Channel Pass-Through

Circuit Reliability; Carriage Return; Critical Alarm

CR-LDP

CTS

Cross-Phase Modulation

CR

CRG

CTP

Complex Programmable Logic Device

Connection Termination Point Tag

CRC

CTN

Control Plane

CPTTAG CPU

CTG

Customer Premises Equipment; Customer Provided Equipment

Connection Termination Point

Clear To Send

Client Transmit Line Closed User Group Code Violation

CV-FE

Code violation - Far End

CV-P

Code Violation - Path

CV-L

Central Processing Unit

Cradle-To-Grave

Core Transmission Network

Code Violation - Line

CV-PFE

Code Violation - Path Far End

CW

Clockwise; Continuous Wave

CV-S,CVS Code Violation - Section; Code Violation -- Seconds

Cyclic Redundancy Check Circuit Restoration Group

Constraint-based Routing Label Distribution Protocol

D

Cathode Ray Tube

D/A

Control Sub-span; Convergence Sublayer; CoreStream

DAC

D&C

Drop and Continue

Client Receive Line

D/I

Drop and Insert

Canadian Standards Association

DACS

Cross Connect

Command Signal and Control

DAD

Core Switching Division

DADM

Consecutive Severely Errored Seconds

DARPA

C Shell

Common Signal Header

DAS

Digital-to-Analog

Digital to Analog Converter; Digital Addressable Controller

Digital Access and Cross-Connect System Direct Access Device

Data Add/Drop Multiplexer

Defense Advanced Research Projects Agency (US) Direct Attached Storage

CSI

Convergence Sublayer Indicator

C-SMF

Conventional Single Mode Fiber

dB decibel

CSP

Customer Service Profile

DB-9

Data Bus 9 Pin Connector

dBc

Decibel referenced to the carrier

CSM CSO CSR

Core Switching Manager

Composite Second Order

Carrier-Suppressed Return-to-Zero

CSU

Channel Service Unit; Customer Service Unit

CSV CT

CTAM CTB

CTC

CTD

DB

Customer Service Representative

CS-RZ CST

DATE

DBA

Central Standard Time

dBm

DBMS

DBPSK

Comma-Separated Value

DBS

Critical

dBW

Cable & Telecommunications Association for Marketing

DC

DCC

Composite Triple Beat

DCE

Common Transmit Clock

Cell Transfer Delay

DCF

5

Duly Authorised Telecommunications Entity Database

Database Administrator

Decibel reference to milliwatts

Database Management System

Differential Binary Phase Shift Keying Direct Broadcast Satellite

Decibels referenced to Watts

Direct Current; Data Connection

Data Communications Channel

Data Communications Equipment; Data Circuit Terminating Equipment Dispersion-Compensating Fiber

DCG

Dispersion Compensation Grating

DMACS

DCME

Digital Compressed Multiplication Equipment

DMB

Data Communication Network

DMH

DCM

DCMS DCN

DCOM DCP

DCS

Dispersion Compensation Module

Digital Circuit Multiplication System

DMC

Distributed Component Object Model

DMM

Digital Communications Protocol; Device Control Protocol

DCU

Dial up Data Channel Unit

DDS

Digital Data Storage; Digital Data Service; Digital Data System; Digital Data Stream

DDI

DE

DEC

DECT DEG

DEMUX DENI

DENY DFB DG

DGD

[Optical] Demultiplexer

DNR

Do Not Revert

DOCSIS DOD DOS

Discard Eligible

DoS

Digital Electrical Carrier

Dispersion-managed Solution

Digital Network Control System

Domain Name Server; Domain Name System Data-Over-Cable Service Interface Specifications Department of Defense Disk Operating System Denial of Service

DP

Distribution Point; Data Processing

Degraded Signal

DPFI

Data Plane Fault Isolation

Digital Entertainment Networking Initiative

DPR

DPRAM

Dedicated Protection Ring

Dual Port Random Access Memory

Distributed Feedback

DQ

Degraded Quality Level

Digital European Cordless Telephone/ Telecommunication

DPDT DPI

Demultiplexer

DPT

Transaction Denier

DQDB

Disc Group

DQoS

Differential Group Delay

DQPSK

DHCP

Dynamic Host Configuration Protocol

DID

Direct Inward Dialer

DR

Digital Input/Output

DRM

DHWG

Degraded Modem Hours

Digital Multi-Meter

DMUX

DNS

Direct Dialing Inward

Dual Modem Cards

Detailed Method of Procedure

DNCS

DCS 1800 Digital Cellular System, GSM variant at 1800 MHz

Digital Multipoint Bridge; Document Maintenance Bulletin

DMOP DMS

Digital Cross-connect System; Digital Connection System

Distributed Monitoring and Control System

Digital Home Working Group

Double-Pole, Double-Throw

Digital Program Insertion; Dots Per Inch

Dynamic Packet Transport

Distributed Queue Dual Bus

Direct Memory Access

Differential Quadrature Phase Shift Keying Disaster Recovery

Differentiated Services

DRAM

Dynamic Random Access Memory

Dual In-line Package (switch)

DS

Digital Signal; Downstream

Div

Division

DS1

Digital Service, Level 1, 1.544 Mb/s; Digital Signal Level

DLCI

Data Link Connection Identifier

DiffServ DIO DIP

DS0

DIR Direction DLC DLL DLT DM

DMA

Digital Loop Carrier

DS3

DSCP

Dynamic Link Library; Data Lind Layer (driver); Downline Load Degraded Minute; Dispersion Mitigation

6

Digital Signal Level 3 (T3 equivalent) Differentiated Service Code Point

Discard Count

DSI

Digital Speech Interpolation

DSL

Direct Memory Access

Digital Service, Level 0, 64kbps

DSCRDS DSF

Digital Linear Tape Drives

Digital Rights Management

Dispersion Shifted Fiber

Digital Subscriber Line; Digital Subscriber Loop

DSLAM DS-n DSP

Digital Subscriber Line Access Multiplexer

E1

Digital Signal Processor

E2PROM

Digital Signal, level n

DSS

Direct Satellite Services

DSTB

Digital Set-top Box

DSS2 DSX

DS-x DSX-1 DSX-3 DT

DTCP DTE

DTH DTL

DV

DVB-ASI DVC

DVD

ECLR ECn

Dual Universal Asynchronous Receiver Transmitter

ECN

ECO

Data User Part

ECTRA

Don’t Use Synchronization Digital Video

ED

Digital Video Broadcast Asynchronous Serial Interface Digital Versatile Disc

End To End

Electrically Erasable Programmable Read Only Memory European data signal at a rate of 34.368 Mb/s

Enterprise Application Integration Events, Alarms, and Logging

Extensible Authentication Protocol Emergency Alert System Error Block; Eastbound

Energy per Bit to Noise ratio

Enhanced Capacity ; European Commission Electrical Carrier Level 1 (STS1 Equivalent) Edge Card Control; Embedded Communications Channel Equipment Catalog Item Egress Cell Loss Ratio

Electrical Carrier, level n; 0=64 kb/s, 2=6,312 Mb/s, 3=44,736 Mb/s Engineering Change Notice

Engineering Change Order

European Committee for Telecommunications Regulatory Affairs Equipment Degrade

EDF

Erbium-Doped Fiber

EDI

Electronic Data Interchange

EDFA

Dynamic Virtual Concatenation

Erbium-Doped Fiber Amplifier

eDOCSIS Embedded Data-Over-Cable Service Interface Specifications

Rewritable Digital Versatile Disc

EEE

EEPROM

Digital Voltmeter

Electronic Equipment Enclosure

Electrically Erasable Programmable Read Only Memory

Digital Voice Orderwire

EF

Datawire

EFCI

Explicit Forward Congestion Indication

EFP

Equipment Fault Protection

Dense Wavelength Division Multiplexing

E&M

ECI

Dynamic Transport System

DWDM

E

ECC

Designated Transit List

Digital Video Recorder

DXI

EC-1

Direct-to-Home, usually satellite television broadcasting

DVR

DXC

EC

Data Terminal Equipment

Display Visual Interface

DW

Eb/No

Digital Transmission Content Protection

DVI

DVOW

EB

Decision Technology; Direct Termination

Recordable Digital Versatile Disc

DVM

EAS

Digital Signal Level 3 Cross Connect

DVD+R

DVD+RW

EAP

Digital Signal Level 1 Cross Connect

Digital Television

DUS

EAL

Digital Signal where N denotes multiple of 51.84 Mb/s

DTV

DUP

EAI

Digital Side Interface

Dual Tone Multiple Frequency

DUART

E3

Digital Subscriber Signaling 2

DTMF DTS

E2E

European Equivalent of T1 (2.048 Mb/s signal speed)

EF&I EFD

Digital Cross-Connect

EH

Data Exchange Interface

EIA EID

Ear & Mouth

EIDE

7

Equipment Failure

Engineer, Furnish and Install

Event Forwarding Discriminator Environmentally Hardened

Electronic Industries Alliance; Electronic Industries Association Equipment Identifier

Enhanced Integrated Drive Electronics

EII

European Information Infrastructure

ER

EIRP

Effective Isotropic Radiated Power; Equivalent Isotropic Radiated Power

EREI-P

Enhanced Path Remote Error Indication

ES

Errored Second

EIR

EJB

ELAN ELR EM

EMBS EMC

EMD

Excess Information Rate

Emulated Local Area Network Element Manager

ESCBND

ElectroMagnetic Compatibility

ESCR

Egress Maximum Burst Size

Electromagnetic Interference

EMS

Element Management System

ES-L

EO

Embedded Multimedia Terminal Adapter

Equipment Order

Embedded Operations Channel

EOF

End of Frame

EOM

End of Message

EOL EoS

EOW EPA

EPCR

Egress Peak Cell Rate

EPG

Equipment Protection Group

EPD EPL

EPLD

E-PON EPR

EPROM EQPT

ETH

ETHBND ETLMI ETR

ETSI

Erasable Programmable Logic Device

Ethernet Passive Optical Network

EU

Erasable Programmable Read Only Memory

EVM

Engineering Progress Report Equipment

8

End System Identifier

Errored Seconds - Line

Electronic Service Method of Procedure Extended Subnetwork

Errored Seconds - Path

Errored Second Regenerator Section

Etag

Ethernet Private Line

Errored Seconds - Far End

ES-RS

ET

Early Packet Discard

Extended Super Frame; Extended Superframe Format

Errored Seconds - Path Far End

ESx

Environmental Protection Agency

Electrostatic Discharge

Electrostatic Discharge Sensitive

ES-PFE

ES-V

Engineered Orderwire; Express Orderwire

Egress Sustainable Cell Rate

Errored Seconds at the Mulitplexor Section

EST

Ethernet over SONET/SDH

Enterprise Systems Connection

ES-MS

ES-S

End of Life

ESCON Bundle

Errored Second-Line Far End

ESR

Everything on Demand

EDFA Saturation Algorithm; End System Address

ES-LFE

ES-P

Enhanced Non-preemptable Unprotected Traffic

Error Code

End System to Intermediate System

ESN

End Network Element

Extended Reach

Enhanced Remote Defect Indicator

ES-IS

ESMOP

Extended Management Domain

EOC EoD

ESI

Expiring Maintenance Process

ESCON MUX

ENUT

ESF

ES-FE

EMX ENE

ESDS

Element Management Layer; Electro-Absorptive Modulated Laser

Expiring Maintenance Tool

END

ESD

Extended Management Gateway

EMT

eMTA

ESCON

Extended Management Domain

EMI

EMP

ESA

Extra Long Reach

Europe, Middle East and Africa

EML

Errcde

Enterprise Java Beans

EMEA EMG

ERDI

Errored Second Ratio

Errored Seconds - Section Eastern Standard Time

Errored Second-Virtual Tributary (VT) Path; Errored Second-VT Path Far End Errored Second Count

End Terminal Ending Tag

10/100 Ethernet

Ethernet Bundle

ESCON Trib Laser Manager Interface External Timing Reference

European Telecommunications Standards Institute European Union

EVC

Ethernet Virtual Circuit

EVPL

Ethernet Virtual Private Line

Error Vector Magnitude

EVPLAN EWO

EXER-R

EXER-S EXP EXZ

F F

F&I

Ethernet Virtual Private Local Area Network

FDM

Exercise - Ring

FDMA

Experimental

FDRP

Engineering Work Order

Exercise - Span (SONET)

FEAC Fahrenheit

FAD

Functional Access Domain

FAT FC

FC10000 FC200 FC400

FCAPS FCC

FC-FE FCIP

FC-L

FC-LFE FCM

Fibre Channel 1 Gb/s

FEP

Fibre Channel 2 Gb/s

FEPLF

Fault, Configuration, Accounting, Performance (or Provisioning), Security management

FERF

Far End Receive Failure

FF

Fast Forward

FEDS

Fibre Channel 10 Gb/s (same as 10GFC)

FET

Federal Communications Commission

FFA

Failure Count - Far End

FFP

Fibre Channel over Internet Protocol Failure Count - Line Far End Fan Control Module

FDDI

Fiber Distributed Data Interface

FDL

Facilities Data Link

First Field Application

Facility Fault Protection Forwarding Information Base

Failure in Time

FMA

FMECA FMS

9

Field-Effect Transistor

FIT

FM

Fiber Distributing Frame

Far End Performance Monitor

Fiber Connection

FLAG

Frequency Division Duplexed

Far End Protection Line Failure

FICON

FITR

Failure Count - VT

Front End Processor; Far End Protection

Frame Identification Code

FITL

Count of FCS-32 Error

FICON Extended Storage over Distance

FIC

FITB

Frame Check Sequence; Fibre Channel Standard

Forward Error Correction Seconds

Fast Fourier Transform

FIL

Failure Count - Path

Forward Explicit Congestion Notification

FFT FIB

Failure Count - Line

Failure Count - VT Far End

FDF

FEPM

Fibre Channel 4 Gb/s

FC-VFE FDD

Forward Error Correction; Forwarding Equivalence Class

FECS

Failure Count - Path Far End

FC-V

Far End Block Error

Failure Code; Failure Count; Fiber Channel; Fibre Channel

FC-PFE FCS32

Fast Ethernet Bridging

Far-End Alarm

FECN

Factory Acceptance Test

Fibre Channel Protocol

FCS

Far End Alarm Channel

Facility Failure

FCP

FC-P

Far End; Fast Ethernet; Forward Error Correction

FEB

FEC

FC Switch Fibre Channel Switch FC100

Fiber Distribution Panel

Frame Drop

Far-End Terminal Alarm Condition

FEBE

Field Alert Bulletin

Frequency Division Multiple Access

FEACT

FEALM

Furnish and Install

Fuse Alarm; Fault Alarm

FAF

FE

Excessive Zone

FA, F/A FAB

FDP

Frequency Division Multiplexing; Fast Ethernet ; Frequency Division Modulation

Fiber in the Loop

Fiber in the Building Fiber in the Loop

Fiber in the Riser

Fiber Link Around the Globe

Fan Module; Fault Management; Forwarding Module; Frequency Modulation Failure Modes Analysis

Failure Mode and Effects and Criticality Analyses Fault Management System

FNCS

Foreign National Control System

FSO

FOADM

Fixed Optical Add/Drop Multiplexer; Flexible Optical Add/Drop Multiplexer

FS-R

FO

FOB

Fiber Optics

Free On Board

FOC

Final Operating Configuration

FOS

Follow on Satellite, Intelsat designation

FOTS

Fiber Optic Transmission System

FOD FOSC FOW FP

FPG

FPGA

FPLMTS FPM FPP

FPS FR

Free on Demand

Fiber Optic Splice Course Forward OrderWire

Fabry-Perot (type of laser); Frame Pulse (NEC) Facility Protection Group

Field Programmable Gate Array

Future Public Land Mobile Telecommunications Systems Fan Power Module

FRF.13 FRF.5 FRF.8.1 FRG

FRM FRMS FRS

FRU FS

FSA

FSAN FSB

FT

Force

Frequency

Frame Relay Forum

Frame Relay Forum Implementation Agreement 12 Frame Relay Forum Implementation Agreement 13 Frame Relay Forum Implementation Agreement 5

Frame Relay Forum Implementation Agreement 8.1 Fragment Count

Forward Resource Management; Frame Count Dropped Frames

Free Space Optical

Forced Switch - Protection Forced Switch - Ring

Fixed Satellite Service

Forced Switch - Span

Forced Switch - Working France Telecom

FT1

Fractional T1

FTA

Fault Tree Analysis

FTC

Fabric and Timing Card

GT

FTAM

Gain Transfer; Grating Temperature

File Transfer and Access Management

FTM

Fabric Timing Module

FTTB

Fiber to the Building; Fiber to the Business

FTP

FTTC

FTTP

Functional Requirements Document; Feature Requirements Definition

FRF.12

FS-W

Frame Relay

FRD FRF

FS-S

FTTD

Frames per Second

Frame Relay Access Device

FREQ

FSS

Fast Pattern Processor

FRAD FRC

FS-P

File Transfer Protocol

Fibre to the Curb (Kerb), linked to VDSL in deployment Fiber to the Desk

FTTH

Fiber to the Home

FTTx

Fiber to the [endpoint]

FUNI FW

FWHM FWM FXO FXS

G

G/T GA

Fiber to the Premise; Maintenance Channel Transparent Termination Point Frame-based User-Network Interface Firmware; Firewall

Full Width at Half Maximum Four-Wave Mixing

Foreign Exchange Office

Foreign Exchange Service

Gain to System Noise Temperature Ratio General Availability

Gb

Gigabit

GbE

Gigabit Ethernet

GB

Gigabyte

Frame Relay Service

GbE VFTP Gigabit Ethernet Virtual Facility Termination Point

File System

GbE WIF

Field Replacement Unit Field Service Application

Full Services Access Network (consortium) Field Service Bulletin

GbE WAN Gigabit Ethernet Wide Area Network GBIC Gbit

Gigabit Ethernet Wide Area Network Interface Gigabit Interface Converter

Gigabit

Gbps, Gbits Gigabits per second

10

Gbytes/s

Gigabytes per second

GRTES

Generic Connection Admission Control

GSM

GC

Gateway Controller

GCC0

General Communications Channel 0 (similar to SDH/SONET DCC)

GCAC GCIT GCM

GCRA

GDMO GE GEB

GEO

GESS GET GFA

GFC GFF

GFP GFR GHz

GigE GII

GMDSS GMPLS GMT GN

GSO

Graphical Craft Interface Terminal

GT

General Control Module

GTF

Generic Cell Rate Algorithm

Guidelines for the Definition of Managed Objects

Geostationary Earth Orbit

GOS GP

GPI

HD

Guaranteed Frame Rate

HDCP

HDB3

High Definition

High Density Bipolar 3

High-bandwidth Digital Content Protection

Global Maritime Distress and Safety System

HD-SDI

High Definition Serial Digital Interface

HDSL

High-speed Digital Subscriber Line

HDMI

Global Information Infrastructure

HDSF

Generalized Multi-Protocol Label Switching

HDT

Greenwich Mean Time; Grasshoppers Made for Telecommunications (GMT fuses)

Header Error Control; Headend Controller

HFC

Gateway Platform

HFM

General Purpose Input

HGW HHP

General Purpose Output

HI

Global Positioning System; Global Positioning Satellite

HISSA

Generic Requirement; Geographic Redundancy

HMS

Gigabit Rate Data Multiplexer

HNv1

11

Host Digital Terminal

HEC HEPA

Grade of Service

High-speed Distributed Switch Fabric

High Definition Television

HEM

Gateway Network Element

High-speed/level Data Link Control

High Definition Multimedia Interface

HDTV HE

Gateway Network Element

Gigabit Passive Optical Network

GRDM

High Availability

High-speed Central Switch Fabric Interface

HDLC

G-PON GR

Gateway

Gigabit Ethernet

General Purpose Input

GPS

Gateway Controller

Gain Flattening Filter (used in EDFA)

GPIN GPO

GWC

HCSFI

GND Ground GNE

Graphical User Interface

HA

Gigahertz (Billion hertz)

Group Termination Point

GUI

Gain Flattened Amplifier

Generic Framing Procedure

Global Traffic Forecast (Intelsat)

General TeleSystems Group

H

Generic Flow Control

Gain Transfer; Grating Temperature

GTS

General Electric Satellite Services Gigabit Ethernet Tunneling

Geostationary Earth Orbit

Global Traffic Meeting (Intelsat)

GW

Gigabit Ethernet Bridge

Global System for Mobile communications, originally: Groupe Spéciale Mobile

GTM GTP

Gigabit Ethernet; Greater than or equal to ; General Electric Corporation

General Requirements for Transmission Equipment Specification

Headend

Headend Modem

High Efficiency Particulate Arrester

Hybrid Fiber Coax

High-speed Forwarding Module Home Gateway

Households Passed

Hardware/Software Interface; Hardware-Software Integration; High Speed Internet

High Speed Serial Application Specific Integrated Circuit (ASIC) Hybrid Management Sub-layer

Home Networking Version 1

HO

Higher Order

ICB

Independent Customer Builds

HO-DSP

High Order-Domain Specific Part

ICLR

Ingress Cell Loss Ratio

HOM

High-Order Modulation

ICNV

Input- Command Not Valid

HOD

HO-DXC

HBO on Demand

Higher Order Digital Cross Connect

HomePNA Home Phoneline Networking Alliance HOP

High Order Path

HO-POH

Higher Order - Path Overhead

HP

Hairpin; Higher Order Path; Homes Passed

HOVC HPA HPF

Higher Order Virtual Concatenation

High Power Amplifier

High Pass Filter

ICD

ICMP ICP

International Code Designator Internet Control Message Protocol IMA Control Protocol

ICPT

Installed Circuit Pack Type

ID

Identifier; Identification

ICR

IDB IDE IDF

Initial Cell Rate

International Development Bank Integrated Device Electronics

Intermediate Distribution Frame; Invalid Data Flag

HPNA

Home Phoneline Networking Alliance

IDH

Identification High byte

HPPI

High Performance Parallel Interface

IDL

Interactive Distance Learning; Interface Definition Language

HPOV HP-UX HRD HS

HSB

HSD

Hewlett Packard Open View

Hewlett Packard’s UNIX-based OS that runs on HP’s enterprise servers

Hardware Release Document; Hardware Requirements Document High Speed

High Speed Bus

High Speed Data

HSSI

High Speed Serial Interface

HTML

Hyper Text Markup Language

HT

HTTP

HVAC HVS HW Hz

I

I/B I/O

IAD IAS IBCC IBS IBT IC

High Threshold

Hypertext Transfer Protocol

Heating, Ventilation, and Air-Conditioning

Hospitality Voice Services

Hardware Hertz

Inbound/Outroute (also known as the return link), from remote terminal to hub

Input/Output

IDI

IDNV IDP

IDR

IDS

IE

Information Element

IEC IEEE IETF IF

IFC

Incoming Error Count; InterExchange Carrier

Institute for Electrical and Electronics Engineers

Internet Engineering Task Force

Intermediate Frequency

Initial First Cost

Information Group

IIAC

Input - Invalid Access Identifier

IISP

Interim Interface Signaling Protocol

IGMP IIOP ILA

ILMI

International Business Traveller

Indoor Unit

IG

In-Band Communication Channel

Integrated Circuit

Intermediate Data Rate

Intrusion Detection System

Inter-DXC Trunk

IDU

ILEC

Intelsat Business Service

Input, Data Not Valid

Initial Domain Part

IDT

Integrated Access Device; Interface Access Device Internet Access Service; Internet Authentication Service

Initial Domain Identifier

ILM

ILOG

12

Internet Group Multicast Protocol

CORBA Internet Inter-ORB Protocol

Intermediate Light Amplification; Integrated Line Amplifier; In-Line Amplifier

Incumbent Local Exchange Carrier

Integrated Laser Module; Integrated Laser Modulator

Interim Link Management Interface; Interim Local Management Interface

Information Log; Incoming Log

ILR

Issues List Report

IR

IMA

Inverse Multiplexing over ATM

IRT

IMD

Intermodulation Distortion

IM

IMBS

Instant Messaging

Ingress Maximum Burst Size

Intermediate Reach

IRD

Integrated Receiver/Decoder

IS

In Service; Intermediate System

ISA

Industry Standard Architecture

IME

Interface Management Entity

IN

Intelligent Network

IS-ANRST In Service - Abnormal and Restricted

I-NET

Institutional Network

ISCR

Inroute

see I/B

IMT INAP INM INT

INTAP INTP

IntServ INVW IOA

IOC IOF

IOR IP IPC

Inter Machine Trunk

Internal; Internal Clock

IPOA IPPV IPR

IPsec IPSL IPTA

IPTV IPX

ISDN IS-IS

Internodal Tunneling Protocol

ISM

Integrated Services

IS-NR

Invalid Word Count

ISO

Input/Output Adapter

Initial Operating Configuration

Inter-office Fiber

Intelligent Peripheral, IN block; Internet Protocol

In Service - Abnormal

InterSwitch Communications Channel

Ingress Sustainable Cell Rate

Internet Small Computer System Interface; SCSI Protocol over TCP/IP Idle Signal Detection

Integrated Services Digital Network

Intermediate System to Intermediate System

Industrial Scientific Medical

In Service - Normal

International Standards Organization

ISOC

the Internet Society

IS-RST

In Service - Restricted

ISP

Interoperable Object Reference ;Indian Ocean Region

ISTP

Internet Service Provider; Inside Plant Internet Signaling Transport Protocol

Inter-process Communications; InterProcess or InterProcesser Control

ISV IT

Information Technology

DAMA IP Channel Unit

ITC

Independent Transmit Clock

Inter-Packet Gap

IPMS

ISD

Interoperability Technology Association for information Processing

IPG

IPMI

iSCSI

Integrated Network Manager

Ingress Peak Cell Rate

IPM

ISCC

Intelligent Network Application Part Protocol

IPCR

IPCU

IS-ANR

Integrated Receiver/Transcoder

ITA

ITE ITL

Interested Party Multicast

ITS

Internet Protocol Multicasting Initiative

Interested Party Multicast Service

ITT

Internet Protocol over ATM

ITU

Impulse Pay per View

ITU-T

Intellectual Property Rights

Internet Protocol Security

IUC

Integrated IP Software License Internet Protocol Transport Agreement

Internet Package Exchange

13

Installation, Test, and Acceptance

Information Technology Equipment

International Telecommunications Union

Intelligent Transportation System; Institute for Telecommunications Sciences

International Telephone and Telegraph

International Telecommunication Union

ITU Telecommunications standards body Interval Usage Code

IVPN

International VPN

IXC

Inter-exchange Carrier

IWF

IP Television

Independent Software Vendor

Interworking Function

J

J0

J2EE JBR

JDBC JDK

JDMK

J Zero

Java 2 Enterprise Edition Jabber Count

Java Database Connectivity Java Development Kit

Java Dynamic Management Kit

JDS-HR

Japan Digital Services - Half Rate

JMS

JAVA™ Messaging System

JEM

JNDI

JPEG JRE

JTAG JVM

K k

K1 K2

JAVA™ Element Manager

Java Naming and Directory Interface Joint Photographic Experts Group Java Runtime Environment

Joint Test Action Group Java Virtual Machine

kilo (thousand)

SONET or SDH overhead byte of MSP/ MS-SPRing (see K2)

Used with K1-SONET or SDH overhead byte for MSP/MS-SPRing

Kb Kilobit KB

Kb/s

KB/s

Kilobyte

Kilobits per second

Kilobytes per second

LAC

Local Access Concentrator

LAN

Local Area Network

LAP

Link Access Procedure; Link Access Protocol

LADM LANE LAPB

LAPD LAPF LAPS

LASER LATA

LC

Lucent Connector; Line Card

kilohertz (thousand hertz)

Ksh

ksym/s

Korn Shell

Kilosymbols per Second

ksym/sec Kilosymbols per Second kVA kW

L

1000 Volt Amperes Kilowatt

Local Craft Access Panel

LCC

Life-Cycle cost; Link Control Channel

LCAS

Layer 2 Tunneling Protocol

LA

Line Adapter; Latin America

L3

Layer 3

Link Capacity Adjustment Scheme

LCD

Liquid Crystal Display

LCN

Local Computer Network; Logical Channel Number; Local Communications Network

LCL

Lower Confidence Limit

Least Cost Routing

LCT

Large Capacity Terminal

LDAP

Lightweight Directory Access Protocol

Laser Diode

LDCC

Line Data Communications Channel

LDP

Label Distribution Protocol

LDCELP LDS

Low Delay CELP

Local Digital Switch

LEAF

Large Effective Area Fiber

LECS

LAN Emulation Configuration Server

LEC

LED

L2TP

Line Build Out

LCAP

LD

Km Kilometer

Laser Bias Current

Normalized Laser Bias Current

LBO

Kilofeet (USA cable length measurement)

kHz

Local Access and Transport Area

LBCN

LCR

kft

Link Access Procedure

Light Amplification by Stimulated Emission of Radiation

Laser Bias Current Level

Kilobytes per second kilo Bits Per Second

Link Access Procedure for Frame-Mode Bearer Services

LBCL

LBC

KBps

kBPS

Link Access Procedure Balanced

Link Access Procedure-D Channel (X 25)

Local ATM

Kilobits per second

Kilobits per second

Local Area Network Emulation

LATM

Kbit/s Kbps

Linear Add/Drop Multiplexer

LEO

Local Exchange Carrier

Light Emitting Diode Low Earth Orbit

LER

Label Edge Router

LF

Line Fail

LES

14

LAN Emulation Server

LFE

Line Far End

LRDC

LGX

Light-Guide Crossconnects

LSB

LGN LH

LIC

Logical Group Node Logical Host

Line Interface Card

LIF

Line Interface

LIP

Local Information Packet

LIM LIU

LLC

Lower-Layer Section DCC

LMDS

Local Multipoint Distribution Service

LMI

LMP

LO

Low Order

LOADM LOC

Locn

LO-DXC

LOPI

M12

LOP-V

VT Loss of Pointer

LOSS

LOVC LOW LP

Lport LP-S

MAU Mb

MB

Local Orderwire

Line Processor; Lockout of Protection; Low Order Path Lockout of Protection - Span

LR

Long Reach (fiber); Line Regeneration Equipment

Low Water Peak

MUX DS-1 into DS2 MUX DS-2 into DS3

Media Access Control; Medium Access Control Metropolitan Area Network

Main Audio Program; Mobile Application Part Protocol Media Access Unit Megabit

Megabyte

Mbaud

Megabaud

Megabytes per second

Mbits/s

Megabits per second

Mb/s

Megabytes per second

Mb/s

15

Line Unit

Megabits per second

Mb/s

LP-S/SF-P Lockout of Protection - Span/Signal Fail - Protection

Loop Testing System; Long Term Storage

Mb/s

MB/s

Logical port

Link Termination Point; Logical Termination Point

MUX DS-1 into DS3

MAP

Low-Order VC

Local Transport Network (fiber ring)

M13

MAN

Loss of Signal Seconds

Line Terminating Equipment; Long Terminal Evolution

Monitor and Control

MAC

Loss of Signal

Low Threshold; Laser Temperature

M&C

M23

Loss of Pointer - Path

LATA Switching System Generic Requirements

Lempel Ziv Stac

Loss of Multiframe; List of Materials Loss of Pointer Decay Period

Label Switch Router

LZS

M

Loss of Pointer Inhibit

Logical Subnetwork

Label Switched Path; Local Service Provider

Low-Voltage Distribution

LWP

Loss of Pointer

Lower Specification Limit

LVD

Path Loss of Frame

Loss of Pointer Integration Period

LOS

LU

Low Order Digital Cross Connect

LOPIP

LOP-P

LTS

Location

Line Overhead

LOPDP

LTP

Loss of Clock

LOH LOP

LTN

Lightweight Optical Add/Drop Multiplexer

Loss of Frame

LOM

LTE

Low Noise Block

LOF

LOF-P

LT

Link Management Protocol

Low Noise Amplifier

LNB

LSSGR

Local Management Interface

LNA

Loss of Sync Message

LSR

Line Module

Least Significant Bit

LSM LSP

Logical Link Control

Low Speed ADM

Loss of Signal or Frame indication signal

LSN

Line Interface Unit

Long Reach Daughter Card

LSF LSL

Line Interface Module

LLSDCC LM

LSA

Megabits per second

Million Bits Per Second

MBS

Maximum Burst Size

MO

Management Control Processor

MODEM

MCC

Master Control Center / Computer

MCPC

Multiple Channels Per Carrier

MCP

MCR

MCS MCT

MCTF MDF

MDU

mDVR ME

Minimum Cell Rate; Minimum Cost Routing Master Control Station

Maintenance Channel Transparency

Motion Compensated Temporal Filtering Main Distribution Frame Multiple Dwelling Unit

Multi-TV Digital Video Recorder Middle East

Module; Movies on Demand

Modem

Modulator/Demodulator

MOF

MOP

MOR

MOS MP

MP3

Medium Earth Orbit

MPLS

Multilink Frame Relay

MGC

Media Gateway Controller

MGN

Management Gateway Node

MIB

Management Information Base

MG

MGCP MHz MID

MIPS MIT

Media Gateway

Management Information Tree

ML

Mediation Layer

MLPPP

Major

Multiplexer/Demultiplexer

Multi-Link Point-to-Point Protocol

mm millimeter MM

MPOA

MPT

of Telecommunications Traffic

MLMD

MPN

Megahertz (million hertz)

Millions of Instructions per Second

Multimode; Multimedia

Management Portal

MPEG-2 Layer 3

Moving Pictures Expert Group

Management Plane

Multi-Protocol Lambda Switching Multi Protocol Label Switching

MPLS-CP MPLS Control Plane

MPS

MiTTs MJ

MPLmS

Media Gateway Control Protocol

Message Identifier

Mean Opinion Score

Multi-Path Interface; Multi-Path Interference

MEO MFR

Method of Procedure

Multi-wavelength Optical Repeater

MPI

M-Plane

Modulation Error Ratio

Managed Object Framework

Multicast Packet Count

MPEG

Mismatch of Equipment and Attributes

MER

Modulator-Demodulator

MPCKTS

MEA

MEGACO Media Gateway Control Protocol

Managed Object

MOD

MPT

MPTS MR

MRRB

Mode Partition Noise

Multi Protocol over Asynchronous Transfer Mode Multiple Priority System

Multiplex Pass-Through

Ministry of Posts and Telecommunications

Multiple Program Transport Stream

Modification Request; Material Request; Medium Reach

Maintenance Requirements Review Board; Material Release Review Board

ms Milliseconds MS

MSA

MS-AIS MSB

Multiplex Section

Mediation Services Administrator

Multiplex Section - Alarm Indication Signal Most Significant Bit

MMCS

Meridian Multi Media Center Switch

MMF

Multi-Mode Fiber

MSF

Main Material Order

MSNM

Metro Switching Network Manager

MSO

Multiple System Operator

MME MML

MMO

Multiwave Management Element Man Machine Language

MMP

Multiwave Management Element

MNO

Mobile Network Operator

MN Minor MNC

Multi-National Company

MSC

Metro Shelf Controller; Microsoft Cluster Server Multiservice Switching Forum

MSN Multi-Subnetwork

MSNM ML Metro Switching Network Manager Mediation Layer MSOH

16

Multiplexer Section Overhead

MSP MS-P

MSPP

MSPVC MS-R

MS-RDI MS-REI MSS

Multiplex Section Protection; Multiservice Switching Path

NASA

Multiservice Provisioning Platform

NBI

Manual Switch - Protection

NAT

Management Soft Permanent Virtual Circuit

NBK NC

Manual Switch - Ring

Multiplex Section - Remote Defect Indication

NCB

NCC

Multiplex Section Remote Error Indication

NCCC NCCI

Mobile Satellite Service

MS-S

Manual Switch - Span

MST

Mountain Standard Time; Multiplex Section Termination

NCP

MS-Spring/MSPR Multiplex Section Shared Protection Ring MSTE MS-W MTA

MTBF MTIE MTP

MTTP MTTR

MTTU MTU

MUX

NAD NAP

NAPT NAS

NCTA

Multimedia Terminal Adapter

NDC NDF

Maximum Time Interval Error

NDIS

Message Transfer Part

NDMH

Transparent Connection Termination Point

NDP

Mean Time to Repair

NDSF

Mean Time to Understand

Maximum Transmission Unit

Mach-Zehnder

Network Capacity Planning and Delivery Non-Conformance Report

Network Computing System; Network Control System; Network Call Signaling Network Control Terminal

National Cable & Telecommunications Association National Destination Code New Data Flag

Network Design and Inventory System Non-Degraded Modem Hours

Network Discovery Protocol; Neighbor Discovery Protocol Non-Dispersion Shifted Fiber Network Element

Network Equipment Building Standards; Network Equipment Building Systems National Electric Code

Network Element Identification

NGDLC NG-L1 NGNA

17

Nodal Control Point; Nodal Control Processor

NEID

NFS

Network Access Server; Network Attached Storage

Network Control Coordination Channel

Network Call Correlation Identification

Network Element Function

NEMA

Network Access Point

National Computer Board

Network Control Center/Computer

NEF

NEIR

Network Address and Protocol |Translation

Nodal Controller; Normally Closed (contacts)

Near End/Far End

NEG

Network Access Domain

No Backup

NE/FE

NEC

No Alarm; Not Alarmed; Not Applicable; Not Available; Numerical Aperture

Northbound Interface

Network Digital Video Recording

NEBS

Millivolt

Network Address Translation

NDVR NE

Multiplexer

Miniature Variable Optical Attenuator

NA

NCT

Mean Time between Failure

MVOA

N

NCS

Manual Switch - Working

Muxceiver

MZ

NCR

Multiplex Section Terminating Equipment

MUXCVR mV

NCP&D

National Aeronautical and Space Agency (US)

Negative Terminal

Network Element Information Request

National Electrical Manufacturers Association Networked File System

Next Generation Digital Loop Carrier

Next Generation Layer 1

Next Generation Network Architecture

NGSO NGW NI

Non-Geostationary Earth Orbit, used as a general descriptive for LEO and MEO systems. National Gateway

Network Interface

NIC

Network Interface Card

NIDU

Network Interface Data Unit

NID NII

NIS

NISC NIU

NLA NLC

NLD

National Science Foundation (US)

NSN

Nationally Significant Number

NSI

NSP

NTF

No Trouble Found

NTFS

New Technology File System

NTS

Near Term Storage; Network Time Synchronization

Network Infrastructure Solutions

National Information Services Council

Network Interface Unit

Network Layer Address; Network Layer Agent Node Line Card

NTE

NTP

NTSC NUT

nanometer

NVRAM

NVM

NZDSF

Network Monitoring and Analysis

O

NMF

Node-level Management Function

OA

NMS

Network Management System

NN

NNI NNIF

NNM

NNTP NO

NOC

Network Management Ethernet Network Management Layer

N key on keyboard for a no response

Network to Network Interface; Network Node Interface Network to Network Interface

NPR

Noise Power Ratio

NRT

Non-Real Time

NPC NR

NRTL

NRTVBR NRZ ns

NSA

Network Parameter Control

No Reply

Nationally Recognized Test Laboratory

Non Real-Time Variable Bit Rate

Non-Volatile Memory

Nonvolatile Random Access Memory Non-Zero Dispersion Shifted Fiber

Operations Administration and Management

OADM OAM

OAMCell

O-BLSR

Network Operations Control Center

Non-preemptive Unprotected Traffic

OA&M

Network Object; Normally Open (contacts)

NOCC

National Television Standards Committee

Operations and Management

OAMP

Network Operations Center

Network Time Protocol

O&M

Network Node Manager

Network News Transfer Protocol

Window New Technology

Network Terminating Equipment

NTFCNCDE Notification Codes (TL1)

Neighbor Link Discovery

Network Management; Network Manager; Network Management; Node Manager

NML

Node Switch Provider; Node Switch Processor

National Information Infrastructure (for the USA, see also GII and EII)

NM

NME

Network Side Interface

NT

Network Layer Protocol Identifier

NMA

Network Service Access Point

NSF

Network Interface Device

NLPI nm

NSAP

OC

OC-1 OC1

OC-12 OC-192 OC-3

Non-Return to Zero Nanosecond

Non Service Affecting

18

Optical Amplifier

Optical Add/Drop Multiplexer

Operations, Administration and Maintenance Operations, Administration and Maintenance Cell Operation, Administration, Maintenance and Provisioning

Optical-Bidirectional Line Switched Ring Optical Carrier

Optical Carrier level 1, SONET bit rate = 51.84 Mb/s Optical Carrier level 1 (51.84 Mb/s)

Optical Carrier level 12, SONET bit rate = 622.08 Mb/s

Optical Carrier level 192, SONET bit rate = 9.953 Gb/s Optical Carrier level 3, SONET bit rate = 155.52 Mb/s

OC-48

Optical Carrier level 48, SONET bit rate = 2.488 Gb/s

OMG

Optical Channel

ONE

Optical Network Element

ONT

Optical Network Terminal

Octet Count

OO

Optical-to-Optical

Oven-Controlled Crystal Oscillator

OOF

Out of Frame

Object Database Management System

OOM1

Out of Multi Frame Stage 1

ODPR

Optically Dedicated Protection Ring

OOO

ODUk

Optical channel Data Unit where k is 1 or 2

OOS

OCAP OCH OCI

OC-n OCT

OMT

OpenCable Application Platform

ON

Open Connection Indication

ONP

Optical Carrier-number; Optical Carrier where N denotes a multiple of 51.84 Mb/s

ONU

Object Management Group

Orthogonal Mode Transducer Optical Network

Open Network Provision

Optical Network Unit

OCTU

Optical Channel Transport Unit

OOB

ODA

Outlet Digital Adapter

OOK

Optical Distribution Frame

OOM2

Outdoor Unit

OOR

Out of Range

OOS-MA

Out of Service-Management

OpEx

Operations Expenditure

OCXO ODBMS ODF

ODU

OEM OEO

OEPL

OEPLAN OEVPL

OFDM OFS

OFTEL OID OIU

OLA OLB

OLM

OLMP OLS OLT

OLTP OM

OMC

On-Off Keying

Out of Multi Frame Stage 2 Optical - Optical - Optical Out of Service

OOS-MAANR Out of Service-Management and Abnormal

Original Equipment Manufacturer Optical-to-Electronic-to-Optical Optical Ethernet Private Line

Optical Ethernet Private Local Area Network

OPM

Optical Ethernet Virtual Private Line

OPR

OEVPLAN Optical Ethernet Virtual Private Local Area Network OFC

Out of Band

OPS/INE

Open Fiber Control; Optical Fiber Communication

OPT

Orthogonal Frequency Division Multiplexing

OPTORL

Office of Telecommunications (UK Regulator)

OQPSK

OpUk

Out of Frame Second

ORB

Oribital Slot

Object Identifier

Operator Interface Unit; Optical Interface Unit; Office Interface Unit Optical Line Amplifier; Optical Link Analysis

ORIG

Optical Link Module

OS

ORL

ORP

Optical Link Budget

OSA

Optical Link Management Protocol

OSC

Optical Line System

Optical Line Termination; Optical Line Terminal

OSDS OSGI

OSRP Link Termination Point

OSHA

Optical Module

OSI

Operation and Maintenance Center

19

Optical Performance Monitoring; Optical Power Meter Optical Power Received

Operations Provisioning System/ Intelligent Network Element Optical Power Transmit

Optical Return Loss

Optical channel payload Unit where k is 1 or 2 Offset Quaternary Phase-shift Keying Object Request Broker

Longitude position above the equator at which a satellite is located Original; Originating

Optical Return Loss

Optical Routing Protocol Operating System

Optical Spectrum Analyzer

Optical Supervisory Channel; Optical Service Channel Operations Systems Data Server Open Services Gateway Initiative

Occupational Safety and Health Act Open Systems Interconnection

OSM

OSMINE OSNR OSP

OSC Splitter Module

Operations Systems Modifications for the Integration of Network Elements Optical Signal-to-Noise Ratio; Open Signal-to-Noise Ratio

Optical Signaling Protocol; Outside Plant

OSPF

Open Shortest Path First

OSRP

Optical Signaling and Routing Protocols

OSPR OSS

OSSAN OSS-AU

Optically Shared Protection Ring Operations Support System

Operations Support System Access Nodes Out of Service-Autonomous

OSS-AUMA Out of Service-Autonomous and Management

OSS-AURST Out of Service-Autonomous and Restricted OSWF OTC

OTDR OTGR OTN OTS

On-site Work Force

Operations Technical Center; Optical Transport Card Optical Time Domain Reflectometer

Operations Technology Generic Requirements Optical Transport Network Optical Transport System

OTS RPTR OTS Repeater OTU OUI

OUNI

O-UPSR OUSM OUSP

Optical Transport Unit

Organizationally Unique Identifier

Optical User Network Interface

Optical-Unidirectional Path Switched Ring Optical Utility Services Manager Optical Utility Services Platform

Outbound see O/B Outroute

see O/B

OXC

Optical Cross Connect

OW

P

Order Wire

P2P

Peer to Peer

PA

Port Adapter; Pre-Amplifier

P6

PA

PABX

Pentium 6

Power Amplifier

Private Automatic Branch Exchange

20

PAD

Power Attenuation Device

PAMA

Permanent Assignment Multiple Access

PARP

Proxy ARP

PAN PAS PAT

PAX PB

PBOR

PPB-TE PBT PBX PC PC

PCA PCB

PCC

Program Association Table

PCP

PCR

PCS

PDA

Private Branch Exchange

Pacific Century Group

PING

Pulse Code Modulation

PJ

PL

PLC

Program Change Notice; Product Change Notice ;Personal Communications Network

Personal Communication System

PDH

Plesiochronous Digital Hierarchy

Pleisiochronous Digital Hierarchy

PDI

Payload Defect Indication

PDP

Policy Decision Point

Packet Internet Groper Plug-In Provisioning

Pointer Justification Packet Loss

Packet Loss Concealment

Physical Layer Convergence Protocol

Philippines Long Distance Telephone Company Phase Locked Loop

PLO

Path Layer Overhead

PMD

Payload Label Mismatch - Path

PNNI Logical Node

Performance Management; Performance Monitoring; Program Manager; Project Manager Power Management Algorithm

Performance Monitoring Building Block

Polarization Mode Dispersion

PMDC

PMD Compensator

PMO

Program Management Office

PMM

21

Photo Intrinsic; Positive-Intrinsic Negative; Personal Identification Number

Payload Label Mismatch - VT

PMBB

Power Distribution Unit; Protocol Data Unit

Packet Interface FPGA

PLM-V

PMA

Polarization Dependent Loss

Personally Identifiable Data; Protocol Identifier; Packet Identifier; Personal Identification

Payload Label Mismatch

PM

Passive Dispersion Compensator

Programmable Interrupt Controller

PLM

PLN

Personal Digital Assistant

Peer Group Leader

Programmable Logic Device

PLM-P

Peak Cell Rate

Peer Group; Protection Group

PLD PLL

Primary Cross-connection Point, street cabinet/flexibility point

Premium Feature Open

Pilot Line Change Notification

PLDT

Product Code

Path Far End

Packet Forwarding Module

PLCN PLCP

Pre-Conditioned Order

Portable Document Format

PDU

PIP

PacketCable Multimedia

PDF

PDL

PIN

Processor Communication Channel

Perceptual Evaluation of Speech Quality

Physical Layer Device; Physical

PIF

Printed Circuit Board

Policy Enforcement Point

PHY PID

Protection Channel Access

Processor Enhancement Module; Processor Element Module

Peer Group Identifier

PIC

Personal Computer

Public, Education, Government

PGID PGL

Personal Computer; Physical Contact; Processor Card

Power Distribution and Alarm Panel

PDH

PG

Provider Backbone Transport

PDAP PDC

PFO

Provider Backbone Bridging Traffic Engineering

Personal Computer Memory Card Interface Adaptor

P-Code

PFM

Petabyte

PCMCIA

PCO

PFE

Primary-Backup Object Replication

Peripheral Component Interconnect

PCN

PESQ

Path Adaptation and X-Connect

PCI

PCMM

PEP

PanAmSat

Pacific Century Corporate Access

PCM

PEM

Personal Area Networking

PCCA PCG

PEG

Power Management Module

PN

PNC

PNNI PO

POC

POH

POM PON

POP/PoP POR

POS

POST POTS PPC

PPD

PPJC PPL

PPM Pport PPP

PPS PPT

PRB

PRBS PRC PRI

Pseudo Noise; physical node

PSM

Private Network-to-Network Interface; Private Network Node Interface

P-SNC

Physical Node Controller Purchase Order

Point Of Contact Path Overhead

Project Office Manager

Passive Optical Network

Point of Presence, usually referring to an Internet service provider/access point Power on Reset

Packet over SONET; Positive Terminal

Power on Self Test

Plain Old Telephone Service Power PC

Partial Packet Discard

Positive Pointer Justification Count Point-to-Point Link

Parts per Minute; Parts per Million; Pulses per Million Physical port

Point-to-Point Protocol

Path Protection Switched; Pulses per Second Power Passing Tap

Project Review Board

Pseudo Random Bit Sequence Primary Reference Clock

Primary Rate Interface

PRNG

Pseudo Random Number Generators

PROT

Protocol; Protection

PROM PRS PS

Programmable Read Only Memory Primary Reference Source

Power Supply; Policy Server

ps/nm-km Pico-second PSA

PacketCable Service Agreement

PSC

Protection Switching Count; Project Steering Committee

PSBF PSD

Protection Switching Byte Failure Protection Switching Duration

PSEL

Presentation Suite

PSL

Path Signal Label

PSI

Program Specific Information

PSN

PSQM PSR PST

PSTN PSU PT

PTE

Persistent Stored Module

Packet Switch Node; Packet Switched Network Permanent SNC

Perceptual Speech Quality Measurement

Protection Side Regeneration; Path Switched Ring

Primary State; Pacific Standard Time

Public Switched Telephone Network

Power Supply Unit; Packet Switch Unit Pass-Through; Payload Type

Path Terminating Equipment

PTI

Payload Type Indicator

PTP

Physical Termination Point; Point-To-Point; Path Termination Point

PTO PTS

PTSE

PTSP PTT PV

PVC PVR

PWB

PWM

Private Telecommunications Operator Per Trunk Signaling

PNNI Topology State Element

PNNI Topology State Packet

Posts, Telegraph and Telephone company (usually a government monopoly operator) Protocol Violation

Permanent Virtual Circuit; Poly Vinyl Chloride; Private Virtual Circuit Personal Video Recorder Printed Wire Board

Pulse Width Modulation

PWR Power

Q

Q3 QAM QL

QMC QoS

QPM

Telecommunications Management Network (TMN) Interface Quadrature Amplitude Modulation Quality Level

QUICC Multichannel Controller Quality of Service

Quarterly Progress Meeting

QPR

Quarterly Progress Report

QUICC

Quad Integrated Communications Controller

QPSK

R

R&D R.H.

22

Quadrature Phase Shift Keying

Research and Development; Research and Design Relative Humidity

R/W

RADIUS RAI

RAID RAIG

RAITN RAM RAN

Read/Write

RHC

Remote Authentication Dial-In User Service

RIB

Remote Alarm Indication

RIN

Relative Intensity Noise

RJ

Registered Jack

RIP

Redundant Array of Inexpensive Disk; Redundant Array of Independent Disk

RJ-11

Resource Availability Information Group

RKS

Regional Arab Information Technology Network

RMA

Random Access Memory

RMAN

Regional Area Network; Radio Access Network

RMI

RASCOM Regional African Satellite Communications Organisation

RMS

RBM

ROADM

RBF

Reconfigurable Blocking Filter

RBOC

Regional Bell Operating Company

RBW

Routing Control Channel

RCVR

Receiver

RDI

Remote Defect Indication

RDF

RDI-L

RDI-P RED REF

ROC

Resolution Bandwidth

RCC RCV

RNR

Regional Business Manager

ROI

Receiver

Recovery Manager

Remote Method Invocation Root Mean Square

Not Ready to Receive; Remote Failure Indication Re-configurable Optical Add/Drop Multiplexer Regional Operations Center Return on Investment

Revolutions per Minute

RR

Ready to Receive; Reverse Request

RRO

Random Early Detection; Random Early Discard

Return Material Authorization; Replace Material Authorization

RPM

RRB

Remote Defect Indication - Path

Registered Jack –11

Record Keeping Server

Read Only Memory

RPR

Remote Defect Indication - Line

Routing Information Protocol

ROM

ROW

Rate Decrease Factor

Regional Holding Company

Routing Information Base

RR-R

Reference

RR-S

Remote Error Indication - Line

RS232

Revision

RSOH

Request for Comment

RSTP

Radio Frequency Interference; Remote Failure Indication; Request for Information

RSVP

Return OrderWire

Resilient Packet Ring

Reliability Review Board Record Route Object

Reverse Request - Ring

Reverse Request - Span

REI

Remote Error Indication

RS

REI-P

Remote Error Indication - Path

RS-E

Ring Switch - East

Radio Frequency

RSP

Route Switch Processor

Request For Final Proposals

RST

REI-L Rev. RF

RFC

RFFP RFI

RFI-L RFI-P RFP RFT RG

RSVP-TE R/W

Remote Failure Indication (detected at the line-layer)

RS-W

Remote Failure Indication (detected at the path-layer)

RT

RTC

Request for Proposal

Radio Frequency Transmitter used to describe large antennas with associated receive/transmit equipment

23

Regenerator Section Overhead

Resilient Spanning Tree Protocol Regenerator Section Terminating Resource Reservation Protocol

Resource Reservation Protocol with Traffic Engineering Read/Write

Ring Switch - West

Remote Terminal; Real Time Real-Time Clock

RTI

Real-Time Ingest

RTO

Recovery Time Objective

RTN

Residential Gateway

Regenerator Section; Reed-Solomon

Recommended Standard –232

Return (voltage return)

RTOS RTP

RTPS

RTRV RTS

RTSP RTT

RTU

RTVBR RU

Real-Time Operating System

Routing Table Protocol; Real-Time Transport Protocol; Routine Task Procedure

RX

SCC

Real Time Streaming Protocol Round-trip Time

Rack Unit

SCE

Real-Time Variable Bit Rate Traffic

Routing and Wavelength Assignment Receive

Return to Zero

s Second

Square Foot

S/IMP

Signal to Impulse Ratio

SA

Service-Affecting

SAAL

SABLIME SAN SAP

SAR

SARP SAS

Signal to Noise Ratio

Signaling ATM Adaptation Layer

Product Administration System (AT&T) Storage Area Network

Secondary Audio Program

Segmentation and Reassembly

Switching Address Resolution Protocol

Severely Errored Frame and AIS Seconds

SAAS

Software As A Service

SATA

Serial AT Attachment

SASE

SATCOM SATT SAW

Standalone Synchronization

Satellite Communications Satellite Capacity Synchronization, Alarms, and Telemetry Termination Surface Acoustic Wave

S-band

frequency band

SBS

Stimulated Brillouin Scattering

SBLK

SCCP S-CDMA

Return to Zero Differential Phase Shift Keying

S/N

SCCI

Right to Use

RZ-DPSK

s.f.

Service Channel; Square Connector; Shelf Controller

Ready to Send; Request to Send; Real Time Operation System

Receive Line

S

SC

SCADA

Retrieve

Rx Line RZ

Switched Broadcast Video

SBW

Real Time Streaming Protocol

RW Rewind RWA

SBV

Errored Superblocks

SCEP SCF

SCM SCN SCP

SCPC SCR

SCSI

SCTE SD SDA

SDCC SDF

SDH SDI

SDL SDLC

Signal Bandwidth

Supervisory Control and Data Acquisition

Serial Communications Controller; Serial Communications Channels Small Computer System Interface

Signalling Connection Control Part, part of SS7 Synchronous Code Division Multiple Access

Service Creation Environment, IN block

Service Creation Environment Point, IN block Service Control Function, IN block

Service Channel Modem; Sub-carrier Multiplexing

Service Channel Network; Shared Content Network Service Control Point, IN block

Single Channel per Carrier

Sustainable Cell Rate; Silicon Controlled Rectifier Small Computer System Interface

Society of Cable Telecommunications Engineers Signal Degrade; Signal Detect; Standard Definition System Design Authority

Section Data Communications Channel Service Data Function, IN block Synchronous Digital Hierarchy

Secure Digital Interface; Serial Digital Interface

Synchronous Data Link; Synchronous Delay Line Synchronous Data Link Control

SDMA

Space Domain Multiple Access

SDP

Service Data Point, IN block

SDMH SD-P

SD-R

SDRAM SD-S

24

Severely Degraded Modem Hours Signal Degrade - Path

Signal Degrade - Ring

Synchronized Dynamic Random Access Memory Signal Degrade-Span

SDTV SDU SE

SEAL SEC SEF

SEFS

SEFS-S SEM

SEMS

Standard Definition Television

SIF

Systems Engineer

SIM

Secondary

SITA

Service Data Unit

Simple and Efficient Adaptation Layer Severely Errored Framing

SESR

SES-RS SES-S SES-V

Severely Errored Seconds

Severely Errored Seconds Path Far End

SMCS

Severely Errored Seconds - VT Far End

SF

Signal Failure; Super Frame

SFD SFF

SMF

SF-R

Signal Failure - Ring

SMT

SHx

Shelf Number

SIB SIC SID

S-MTA

Serial Interface; Service Independent ; System Integrator

SN

SNA

Service Independent Building Block, IN block

SNC

System Integrity Control; Standard Industrial Classification

SNCP

SNCP/I

System Identification number; Source Identifier

25

Switched Multimegabit Data Service

Small and Medium Enterprise; Short Message Entity Single Mode Fiber

Service Management Point, IN block

Signaling Gateway Controller

SI

Short Message Service Center

SMP

SGC

Bourne Shell

Serial Management Controllers; Standard Management Committee

Switch Monitor

SMSC

sh

Small and Medium Business

SMON

SMS

Signaling Gateway

Service Management Access Point, IN block

Single Mode Long Reach

Signal Failure - Span

SG

Service Level Report

SMLR

SMOP

Small Form-factor Pluggable

Service Layer Manager

Single Mode Intermediate Reach

SMM

Small Form Factor (connector)

Serial Line Internet Protocol

SMIR SML

Start of Frame Delimiter

Sync Frequency Offset

SF-S

SME

Synchronous Equipment Timing Source

SFO SFP

SMDS

Severely Errored Seconds - VT

SES-VFE SETS

SMC

Severely Errored Seconds - Section

Service Level Agreement

Single Mode; Switching Module; Shelf Manager

SMB

Severely Errored Seconds Regenerator Section

Société Internationale de Télécommunications Aéronautique

SM

Severely Errored Seconds Line Far End

Severely Errored Second Ratio

Session Initiation Protocol

Synchronization Loss

SMAP

Severely Errored Seconds - Path

Service Interface Module

SLOSS SLR

Severely Errored Multi-frame Seconds

Severely Errored Seconds - Line

SES-PFE

SLM

Service Entitlement Manager

SES-L

SES-P

SLIP

Severely Errored Framing Seconds Section

Serializer/DeSerializer

SES-LFE

SLA

Severely Errored Frame Seconds

SerDes SES

SIP

SONET Interoperability Forum; Switch Interface FPGA

Service Management Layer

Service Mediation Module

Service Method of Procedure

Service Management System, IN block; Service Management Suite; Short Message Service Short Message Service Centre, part of GSM messaging system Surface Mount Technology; Self-Monitoring Task

Standalone Multimedia Terminal Adaptor Service Node, IN block

Systems Network Architecture

Subnetwork Connection; Subnetwork Controller Subnetwork Connection Protection

Subnetwork Connection Protection/ Inherent monitoring

SNCP/N SNG

SNM

Subnetwork Connection Protection/ Non-intrusive monitoring

SSB

Switching Network Manager

SSCS

Sequence Number Protection

SSF

Satellite News Gathering

SNMP

Simple Network Management Protocol

SNR

Signal-to-Noise Ratio

SNP

SSCOP SSEL

SNTP

Simple Network Time Protocol

SSL

SOF

Start of Frame

SSMF

SOA

SOH

SOHO

SONET SOP SP SPC

SPCN SPE SPF SPI

SPM

Semiconductor Optical Amplifier Section Overhead; State of Health

Small Office/Home Office

Synchronous Optical Network, US equivalent to SDH Standard Operating Procedure; Service Provider

Self-Phase Modulation

SPR/SPRing SPTP

SPVC SQL SR

Shared Protection Ring

Service Path Termination Point

Soft Permanent Virtual Connection; Soft Permanent Virtual Circuit Structured Query Language

Short Reach (fiber)

SRAM

Static Random Access Memory

SRD

Software Release Document

SST

SSTUR SSU ST1 ST2

STE

STII (2) STM

STM-0 STM-1

STM-4

SRS

Stimulated Raman Scattering

Synchronous Residual Time Stamp Service Affecting (TL1)

SS/TDMA Satellite Switched Time Division Multiple Access, Intelsat service SS5 SS7

Signaling System 5

Signalling System 7, supported by the ITU-T, also known as CCITT 7

Synchronization Supply Unit ; Subscriber Terminals

Straight Terminus; Straight Tip Stratum 1; Switched T1 Stratum 2 Stratum 3

Set-Top Box

STC

Specialised Resource Function, IN block

SRVEFF

Secondary Service State

Site-Specific Turn-Up Report

STB

ST4

SRF

SRTS

Solid State Power Amplifier

Stratum 3 Enhanced

STM-16

Software Release Notice

Standard Single Mode Fiber

ST3E

SRC/DST Source/Destination

SRN

Secure Sockets Layer

Service Switching Point, IN block

SSPA

ST3

Serial Peripheral Interface; Service Provider Interface

Server Signal Failure ; Service Switching Function

SSP

Satellite Personal Communications Network Synchronous Payload Envelope

Session Selector

Synchronization-Status Messages

ST

Shortest Path First

Service-Specific Convergence Sublayer

SSM

Shelf Processor; Shelf Pump; Service Provider SONET Permanent Circuit

Single Sideband

Service Specific Connection Oriented Protocol

STM-64 STM-n

STM-nC STMX STP

STS

STS-1

26

Stratum 4 (Asynchronous) Stacking and Timing Card

Section Terminating Equipment; Section Terminating Element Type of optical connector

Synchronous Transfer Mode, or Module

Synchronous Transfer Mode level 0, SDH bit rate = 51.84 Mb/s Synchronous Transfer Mode level 1, SDH bit rate = 155.52 Mb/s

Synchronous Transfer Mode level 16, SDH bit rate = 2488.32 Mb/s Synchronous Transfer Mode level 4, SDH bit rate = 622.08 Mb/s

Synchronous Transfer Mode level 64, SDH bit rate = 9953.28 Mb/s Synchronous Transport Module n

Synchronous Transport Module of level n concatenated SONET/SDH Thin Multiplexer

Spanning Tree Protocol; Shielded Twisted Pair Synchronous Transport Signal

Synchronous Transport Signal Level 1

STS-3

STS-3c STS-n

STS-Nc

Synchronous Transport Signal Level 3

Synchronous Transport Signal Level 3, concatenated

STU-P

To Be Determined

TBUS

Timing Bus

TBOS

Synchronous Transport Signal n

TC

Contiguous Concatenation of N STS-1 SPEs

TCA

STS-N-Xv Virtual Concatenation of X STS-N SPEs STU

TBD

Secure Telephone Unit; Synchronized, Traceability Unknown; Stratum Traceability Unknown

TCBE TCM

Stratum Traceability UnknownProvisioned

TCMO

SVCC

Switched Virtual Channel Connection

TCP/IP

SVP

Secure Video Processor

TCTP

Software

TD

Software Identifier

TDM

SVC

SVOD SVPC SW

SWCA SWID

SWOD SX

SYNC

SYNCIO

SYSLOG

T

T1 T1 T3

TAC TACACS TACS TADR

TCP

Switched Virtual Circuit

Subscription Video on Demand

Switched Virtual Path Connection

TDEV

Split Working Channel Access

TDMA

Software ODACS

TE

Short Reach as in 1000Base-SX

Synchronization

System Log

TAM TAP

TARP TAS TB

TID TIE

TIM TIM-S

27

Terminal Equipment

Traffic Engineering Database

Telephone Company

Telephone Equipment Order

Thin Film Transistor

Trivial File Transfer Protocol Timing Generator

Corrected Type Header Error Correction Code

TIA

Terabyte

Time Division Multiple Access

THEC TI

Telecommunications Authority of Singapore

Time Division Multiplexing

Trunking Gateway Control Protocol

Total Available Market

Target Identifier Address Resolution Protocol

Traffic Director

Time Deviation

TGCP

THz

Test Access Port; Technician Access Port

Transparent Connection Termination Point

Termination

Target Address

TADRMAP Target Address Map

Transmission Control Protocol/Internet Protocol

TERM

TGS

Total Access Communications Systems (Analogue)

Transmission Control Protocol; Trouble Cleaning Procedure

Talker Echo Loudness Rating

TG

Terminal Access Controller Access Control Systems

Transport Complex Managed Object

TELR

TFTP

Transport Aggregated Circuit; Technical Assistance Center

Trellis Coded Modulation; Transport Channel Members

Terminal Endpoint Identifier; Terminal Equipment Identifier

TFT

Digital Carrier System for DS3 Signals

Total Corrected Bit Error

TEI

TEO

1.544 Mb/s (US orientated)

Threshold Crossing Alert; Timing Control and Access

Thermo-Electric Cooler

Telco Service or line operation at the DS-1 rate

Transmission Convergence; Transport Complex; Transport Channel

TEC

TED

Synchronized Input/Output

Telemetry Byte Oriented Serial Protocol

Time Generation System TeraHertz (1012 hertz)

Terrestrial Interference

Telecommunications Industry Association Target Identification; Terminal Identification Time Interval Error

Trace Identifier Mismatch; Transmit Intermediate Multiplexer

Trace Identifier Mismatch - Section

TIRKS TISSA Hz

Trunk Integrated Record Keeping System Time Space Switch ApplicationSpecific Integrated Circuit Hertz

TKIP

Temporal Key Integrity Protocol

TL-1 CLI

Transaction Language One, Command Line Interface

TL-1 TLC TLI

TLS

Transaction Language 1

Transport Logical Connection

Transaction Language Command Line Interface

TSE

TSEL TSF

Transport Signal Failure

TSI

Time Slot Interchange; Time Switch Interchange

TSG TSR

TSX TTE TTL

TTP

Type-Length-Value Intelligent Network

TU-n

Telephony Markup Language

TVRO

Terminal Monitor and Control

TV

TMN

Telecommunications Management Network

TW

Time Out

Tx Line

TMO

tmout

Trans Metro Optical (platform)

tmper

Time Period

TNL

Ethernet Tunneling

TMUX TNM TOD ToD

TOH TOP

TOS TP

TWC TX

Terminal Multiplexer

U

Transport Network Management

UART

Television on Demand

UAE

TrueWave Classic – fiber brand

Transmit

Transmit Line

United Arab Emirates

Universal Asynchronous Receiver/ Transmitter

Unavailable Seconds - Line Far End

Termination Point

UAS-P

Unavailable Seconds - Path

Total Quality Management

UASP

UAS-PFE UAS-RS

Tributary

UAS-S

tRTO

TCP Retransmit Timeout

UAS-VFE

Time Slot; Time Stamp; Time Synchronization

UB

Transport System Division

UBRVBR

TSD

TrueWave – fiber brand

UAS-LFE

Type of Service

UASL

TRIB

TSA

Television

Television Receive Only earth station

Task Oriented Practice; Task Oriented Procedure

Technical Reference

TS

Tributary Unit, level n

UAS-L

Transport Overhead

TR

TrTOH

Tributary Unit Group, level n

UAS

Timing Plane Fault Isolation

TRM

Tributary Unit; Transmission Unit

Time of Day

TPFI

TQM

Trail Termination Point

Tributary Unit Group

TMC TML

Transistor Transistor Logic; Time to Live

TUG

TUG-n

IN

Time-Space Switch ASIC

Transparent Terminal Equipment

Transparent LAN Services

Timing Module; Transaction Manager

TM

Technical Service Representative

Transparent Trail Termination Point

TU

TLV

Timing Signal Generator

TTTP

Transoceanic Line Switched Ring

TLSR

Topology State Element

Transport Selector

Unavailable Seconds

Unavailable Second Count-Line

Unavailable Seconds - Line

Unavailable Second Count-Path

Unavailable Seconds - Path Far End

Unavailable Seconds - Regenerator Section Unavailable Seconds - Section

Technical Review Meeting

UAS-V

Unavailable Seconds - VT

Transparent Transport Overhead

UAT

Unavailable Time

Time Slot Assignment

UBR UC

28

Unavailable Seconds - VT Far End Uncorrected Block

Undefined Bit Rate; Unspecified Bit Rate

Unspecified Bit Rate Variable Bit Rate User Channel

UCBE

Uncorrectable Block Error

UTC

UD

Unconditional Disconnect

UTOPIA

UCD

Upstream Channel Descriptor

UDLR

Unidirectional Link Routing

UDR

Unconditional Disconnect Response

UDP

UEM UEQ

UGC UGS

UHD UHF UI

Unsolicited Grant Service Ultra High Density

V

User Interface

PSTN

Ultra High Frequency

Unacknowledged Information Transfer Service

ULSDCC UMTS UNEQ

UOG UPC

UPN

UPnP UPS

Video/Audio

Voltage Alternating Current

Voice Activity Detection

Variable Bit Rate

VBI VC

Unequipped Path; Unequipped

VCAT

Unequipped VT

VCC

VCG

User Network Interface

VCI

User Network Interface

VCL

Unlicensed National Information Infrastructure

VCM

VC-N

Universal OSS Gateway

Ultra Physical Contact; Universal Packet Carrier; Usage Parameter Control

VC-N-Xc

Universal Personal Number

VC-N-Xv

Universal Plug and Play

Virtual Access Partitioning

Vertical Blanking Interval

Virtual Circuit; Virtual Channel; Virtual Container; Virtual Concatenation Virtual Concatenation

Virtual Channel Connection

Virtual Concatenation Group

Virtual Channel Identifier Virtual Channel Link

Virtual Concatenation-group Member

Virtual Container Level N (N=11, 12, 2, 3, 4)

Contiguous Concatenation of X Virtual Containers at Level N Virtual Concatenation of X Virtual containers at Level N

Uninterrupted Power Supply

VCO

Universal Personal Telecommunications

VCSEL

Vertical Cavity Surface-Emitting Laser

VDC

Volts Direct Current

Universal Resource Identifier

US

Upstream

USEPA

Voltage

Public Switched Telephone Network

VBR

VAP

Universal Mobile Telecommunications System

URI

USB

Universal Voice Carrier; Universal Video Carrier

50/40 GHz

Unidirectional Path Switched Ring

URL

Primary Rate Interface

V-band

Ultra Long Haul

UPSR UPT

VAD

Ultraviolet

Upper Layer Section Data Communications Channel

Unbundled Network Elements

UNII

VAC

Unprotected Termination Point; Unshielded Twisted Pair

VADSL or Very high speed (Asymmetric) VDSL Digital Subscriber Line

UNEs

UNI/UNIF

V/A

Universal Test and Operations Physical Interface for ATM

Underwriters Laboratories

Unequipped Path

UNI

V

User Identifier

UNEQ-P UNEQ-V

UVC

Universal Gateway Carrier

UITS ULH

PRI

Unequipped

User Interface Client

UL

UV

Universal Equipment Modules

UIC

UID

UTP

User Datagram Protocol

Universal Time Coordinated; Universal Transport Carrier

VCR

VCXO

Universal Resource Locator

VDSL

Universal Serial Bus

VEC

United States Environmental Protection Agency

VF

29

Voltage Controlled Oscillator Video Cassette Recorder

Voltage Controlled Crystal Oscillator

Very-high-bit-rate Digital Subscriber Line

Voice Equivalent Circuit

Virtual Fiber; Virtual Facility

VFCU VFTP VG

VGA VHF

Voice/FAX Channel Unit

WAN

Wide Area Network

Virtual Group

WBS

Work Breakdown Structure

WCA

Working Channel Access

W-DCS

Wideband Digital Cross-Connect System

Virtual Facility Termination Point Variable Gain Amplifier

Very High Frequency

VLAN

Virtual Local Area Network

VM

Voice Mail; Virtual Memory; Virtual Machine

VLR

VME

VMM

Very Long Reach

Versa Module Eurocard Voice/Modem Module

WB

WC

WCSS WDM WDT WE

VOA

Variable Optical Attenuator

VoIP

Voice over Internet Protocol

WEP

VOQ

Virtual Output Queuing

WFM

VOD VOM VOW VP

VPC

Video on Demand Volt-Ohm Meter

Voice Order Wire

Virtual Path

Virtual Path Connection

VPCI

Virtual Path Connection Identifier

VPI

Virtual Path Identifier

VPG

VPI/VCI VPL

Virtual Path Group

Combined, VPI and VCI identify a connection on an ATM Network Virtual Path Link

VPLS

Virtual Private LAN Service

V-pole

Vertical-pole

VPN VPS

VPSP

VRRP VSA

VSAT

Virtual Private Network

Voice Processing System

Virtual Path Switch Protection

Virtual Router Redundancy Protocol

Virtual-Scheduling Algorithm; Vector Signal Analyzer Very Small Aperture Terminal

VSI

Vendor-Specific Information

VSSP

Virtual Service Switching Point

VT-100

Terminal Emulation System

V-UNI

Virtual User Network Interface

VSR VT

VTG

W W

WAD

Very Short Reach

Virtual Tributary

Virtual Tributary Group

Watt; Working

Wavelength Add and Drop

WECA WFA

WFQ

Working Band; Westbound Watts per channel

WDM Capable Switching System Wavelength Division Multiplexing Watchdog timer

Western Europe

Wireless Ethernet Compatibility Alliance Wired Equivalency Privacy Workforce Automation

Workforce Management

Weighted Fair Queuing

WIF

Wide Area Network Interface

WiMedia

An alliance for Wireless Multimedia

WiFi

WLAN

Wireless Fidelity

Wireless Local Area Network

WLL/WiLL Wireless Local Loop, WiLL is also Motorola’s WLL product line name WM9 WPA

WPS

WRED WSS

WTO

Windows Media Player Version 9

Wireless (WiFi) Protected Access Working/Protect Splitter

Weighted Random Early Discard; Weighted Random Early Detection Wavelength Selective Switch World Trade Organisation

VPN

Virtual Private Network

WWN

World Wide Name

WTR

WWW

X

X.25 XC

Wait to Restore

World Wide Web

Packet Switched Communications Interface Cross Connect

XCVR

Transceiver

XFP

10 Gb/s small form-factor pluggable transceiver

XDSL XML

XMTR XPM

30

See DSL (Digital Subscriber Line) Extensible Markup Language

Transmitter

Cross-Phase Modulation

Z

ZAC

ZWP

Zero Administration Client

Zero Water Peak

Notes

31

Headquarters 7035 Ridge Road Hanover, Maryland 21076 Toll Free (800) 921-1144 Phone (410) 694-5700 Fax (410) 694-5750 www.ciena.com

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