Acronyms

Table Of Contents

Acronyms

Numerics

10BaseT

standard 10 megabit per second local area network over unshielded twisted pair copper wire

100BaseT

standard 100 megabit per second ethernet network

100BaseTX

specification of 100BaseT that supports full duplex operation

A

ACO

Alarm Cutoff

ACT/STBY

Active/Standby

ADM

Add-Drop Multiplexer

AIC

Alarm Interface Controller

AID

Access Identifier

AIP

Alarm Interface Panel

AIS

Alarm Indication Signal

AIS-L

Line Alarm Indication Signal

AMI

Alternate Mark Inversion

ANSI

American National Standards Institute

APS

Automatic Protection Switching

ARP

Address Resolution Protocol

ATAG

Autonomous Message Tag

ATM

Asynchronous Transfer Mode

AWG

American Wire Gauge

B

B8ZS

Bipolar 8 Zero Substitution

BER

Bit Error Rate

BIC

Backplane Interface Connector

BIP

Bit Interleaved Parity

BITS

Building Integrated Timing Supply

BLSR

Bidirectional line switched ring

BNC

Bayonet Neill-Concelman (coaxial cable bayonet locking connector)

BPDU

Bridge Protocol Data Unit

C

CAT 5

Category 5 (cabling)

CCITT

Consultative Committee International Telegraph and Telephone (France)

CEO

Central Office Environment

CEV

Controlled Environment Vaults

CLEI

Common Language Equipment Identifier code

CLNP

Correctionless Network Protocol

CMIP

Common Management Information Protocol

cm

centimeter

COE

Central Office Environment

CORBA

Common Object Request Broker Architecture

CPE

Customer Premise Environments

CTAG

Correlation Tag

CTC

Cisco Transport Controller

D

DCC

Data Communications Channel

DCN

Data Communications Network

DCS

Distributed Communications System

DRAM

Dynamic Random Access Memory

DS-1

Digital Signal Level One

DS-3

Digital Signal Level Three

DS1-14

Digital Signal Level One (14 ports)

DS1N-14

Digital Signal Level One (N-14 ports)

DS3-12

Digital Signal Level Three (12 ports)

DS3N-12

Digital Signal Level Three (N-12 ports)

DS3XM-6

Digital Service, level 3 Trans Multiplexer 6 ports

DSX

Digital Signal Cross Connect frame

E

EDFA

Erbium Doped Fiber Amplifier

EFT

Electrical Fast Transient/Burst

EIA

Electrical Interface Assemblies

ELR

Extended Long Reach

EMI

Electromagnetic interface

EML

Element Management Layer

EMS

Element Management System

EOW

Express Orderwire

ERDI

Enhanced Remote Defect Indicator

ES

Errored Seconds

ESD

Electrostatic Discharge

ESF

Extended Super Frame

ETSI

European Telecommunications Standards Institute

F

FC

Failure Count

FDDI

Fiber Distributed Data Interface

FE

Frame Bit Errors

FG1

Frame Ground #1(pins are labeled "FG1," "FG2," etc.)

FSB

Field Service Bulletin

G

Gbps

Gigabits per second

GBIC

Gigabit Interface Converter

GR-253-CORE

General Requirements #253 Council Of Registrars

GR-1089

General Requirements #1089

GUI

Graphical User Interface

H

HDLC

High-Level Data Link Control

I

IEC

InterExchange Carrier

IEEE

Institute of Electrical and Electronics Engineers

IETF

Internet Engineering Task Force

IP

Internet Protocol

IPPM

Intermediate-Path Performance Monitoring

I/O

Input/Output

ITU-T

The International Telecommunication Union-Telecommunication Standards Sector

J

JRE

Java Runtime Environment

L

LAN

Local Area Network

LCD

Liquid Crystal Display

LDCC

Line Data Communications Channel

LOP

Loss of Pointer

LOS

Loss of Signal

LOF

Loss of Frame

LOW

Local Orderwire

LTE

Line Terminating Equipment

LVDS

Low Voltage Differential Signal

M

MAC

Media Access Control

Mbps

Million bits per second, or Million bytes per second

Mhz

Megahertz

MIB

Management Information Bases

MIME

Multipurpose Internet Mail Extensions

Mux/Demux

Multiplexer/Demultiplexer

N

NE

Network Element

NEL

Network Element Layer

NEBS

Network Equipment-Building Systems

NML

Network Management Layer

NMS

Network Management System

O

OAM&P

Operations, Administration, Maintenance, and Provisioning

OC

Optical carrier

OOS AS

Out of Service Assigned

OSI

Open Systems Interconnection

OSPF

Open Shortest Path First

OSS

Operations Support System

OSS/NMS

Operations Support System/Network Management System

P

PCM

Pulse Code Modulation

PCMCIA

Personal Computer Memory Card International Association

PCN

Product Change Notices

PDI-P

STS Payload Defect Indication-Path

POP

Point of Presence

PM

Performance Monitoring

PPMN

Path-Protected Mesh Network

PSC

Protection Switching Count

PSD

Protection Switching Duration

PTE

Path Terminating Equipment

R

RAM

Random Access Memory

RDI-L

Remote Defect Indication Line

RES

Reserved

RJ45

Registered Jack #45 (8 pin)

RMA

Return Material Authorization

RMON

Remote Network Monitoring

RS232

Recommended Standard #232 (ANSI Electrical Interface for Serial Communication

Rx

Receive

S

SCI

Serial Communication Interface

SCL

System Communications Link

SDCC

Section Data Communications Channel

SDH/SONET

Synchronous Digital Hierarchy/Synchronous Optical Network

SEF

Severely Errored Frame

SELV

Safety Extra Low Voltage

SES

Severely Errored Seconds

SF

Super Frame

SML

Service Management Layer

SMF

Single Mode Fiber

SNMP

Simple Network Management Protocol

SNTP

Simple Network Time Protocol

SONET

Synchronous Optical Network

SPE

Synchronous Payload Envelope

SSM

Synchronous Status Messaging

STA

Spanning Tree Algorithm

STP

Shielded Twisted Pair

STS-1

Synchronous Transport Signal Level 1

SWS

SONET WAN Switch

SXC

SONET Cross Connect ASIC

T

TAC

Technical Assistance Center

TBOS

Telemetry Byte Oriented Serial protocol

TCA

Threshold Crossing Alert

TCC+

Timing Communications and Control+ Card

TCP/IP

Transmission Control Protocol/Internet Protocol

TDM

Time Division Multiplexing

TDS

Time Division Switching

TID

Target Identifier

TL1

Transaction Language 1

TLS

Transparent LAN service

TMN

Telecommunications Management Network

TSA

Time Slot Assignment

TSI

Time-Slot Interchange

Tx

Transmit

U

UAS

Unavailable Seconds

UDP/IP

User Datagram Protocol/Internet Protocol

UID

User Identifier

UPSR

Unidirectional Path Switched Ring

UTC

Universal Time Coordinated

UTP

Unshielded Twisted Pair

V

VDC

Volts Direct Current

VLAN

Virtual Local Area Network

VPN

Virtual Private Network

VT1.5

Virtual Tributary equals 1.544 megabits per second

W

WAN

Wide Area Network

W

Watts

X

XC

Cross-Connect

XCVT

Cross-Connect Virtual Tributary

X.25

Protocol providing devices with direct connection to a packet switched network