Acronyms

A/R

line A receiver input (on RSM)

A/T

line A transmitter input (on RSM)

AC

alternating current

ALS

automatic laser shutdown

ASN.1

Abstract Syntax Notation One

ATM

Asynchronous Transfer Mode

B/R

line B receiver input (on RSM)

B/T

line B transmitter input (on RSM)

BSM

band splitter module

° C

degree Celsius

CCO

converter card option

CH

channel

CL

coupling link

CPU

central processing unit

CRT

terminal emulation protocol (like Telnet)

CTS

Clear To Send

D

common receiver output (on RSM)

dB

decibel

dBm

decibels per milliwatt

DC

direct current

DEMI

device element management interface

DIN

Deutsche Industrie Norm

DMX

demultiplexer module

DNSA

domain name server address

DWDM

dense wavelength division multiplexing

e/o

electrical to optical conversion

EMC

electromagnetic compatibility

EMI

electromagnetic interference

EPLD

electronically programmable logic device

Err

error

ESCON

Enterprise System Connection

° F

degree Fahrenheit

FC

fixed clock

FC2488

Fixed Distributed Data Interface

FDDI

Fiber Distributed Data Interface

FIT

failure in time

F-ON

Forced O+B85n

FTP

File Transfer Protocol

Gbps

gigabits per second

GHz

gigahertz

GND

Signal Ground

GUI

graphical user interface

h

hour

HS

high speed

HS-FC1062

high speed with 1062-Mbps fixed clock

HS-FC1062-CL

high speed with 1062-Mbps fixed clock for coupling link

HS-FC622

high speed with 622-Mbps fixed clock

HS-LC-MC

high speed with low-speed multiclock

HS-MC1062/1244

high-speed multiclock 1062/1244 Mbps

HS-T

high-speed transparent

HW/SW

hardware/software

IANA

Internet Assigned Numbers Authority

ICANN

Internet Corporation for Assigned Names and Numbers

ICMP

Internet Control Message Protocol

INNC

inter-NEMI network connection

IP

Internet Protocol

ITU-T

International Telecommunication Union Telecommunication Standardization Sector

kbps

kilobits per second

kg

kilogram

km

kilometer

L

local

LAN

local area network

lb

pound

LED

light emitting diode

Linux

Linus Torvald's UNIX

MHz

megahertz

L/R

local receiver

LS

low-speed

LS-MC

low-speed multiclock

LS-T

low-speed transparent

L/T

local transmitter

M

common transmitter input (RSM)

M

multimode (on labels)

MAN

metropolitan area network

Mbps

megabits per second

MC

multiclock

MHz

megahertz

mi

mile

MIB

Management Information Base

mm

millimeter

MiniSC

type of connector with physiccal contact (also know as MUPC)

ms

millisecond

MTBF

meantime between failures

MTTR

meantime to repair

MU/APC

type of connector with angled physical contact (8° )

MUPC

type of connector with physical contact

MUX

multiplexer module

N

newton

nc

not connected

NCC

network control center

NEMI

network element management interface

nm

nanometer

NMS

network management system

NTP

Network Time Protocol

o/e

optical to electrical conversion

OADM

optical add/drop multiplexer

OC A130-n

optical carrier (SONET) standard: ANSI/T1.105.06

OC-1

optical carrier level 1

OC-12

optical carrier level 12 (2488.32 Mbps)

OC-3

optical carrier level 3 (155.52 Mbps)

OC-48

optical carrier level 48 (2488.32 Mbps)

OS

operating system

OTDR

optical time domain reflectometer

OTM

optical terminal multiplexer

PDL

polarization dependent loss

PDU

power distribution unit

PLD

programmable logic device

PMD

polarization mode dispersion

PPP

Point-to-Point Protocol

ps

picosecond

PSM

power supply module

R

remote

R/R

remote receiver

R/T

remote transmitter

RFC

Request For Comments

RI

ring indicator

RSM

remote switch module

RTS

Request To Send

Rx

receiver

RxD

Receive Data

S

single-mode

SELV

safety extra low voltage

SDH

Synchronous Digital Hierarchy

SM

single-mode

SNMP

Simple Network Management Protocol

STM-1

Level 1 (51.840 Mbps)

STM-16

Level 16 (622.080 Mbps)

STM-4

Level 4 (155.520 Mbps)

STM-64

Level 64 (2488.320 Mbps)

STM-n

Synchronous Transport Module - level n

T

transparent

TCP/IP

Transmission Control Protocol/Internet Protocol

TDM

time division multiplexing

TDM4E

TDM Channel Module 4 x ESCON

Telnet

Telecommunication Network

Tx

transmitter

TxD

transmit data

UART

Universal Asynchronous Receiver Transmitter

UDP

User Datagram Protocol

UNIX

a multiuser, multitasking operating system

UTC

Universal Time Coordinated

UTP Ethernet

unshielded twisted pair Ethernet

vi

visual interface

WAN

wide area network

WCM

wavelength channel module

WDM

wavelength division multiplexing