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Element Management Systems (EMSs)

Glossary

ADM
add-drop multiplexer

ADSLF
Asymmetric Digital Subscriber Line Forum

ATM
asynchronous transfer mode

ATMF
Asynchronous Transfer Mode Forum

BER
bit error rate

BML
business management layer

CMIP
common management information protocol

CMISE
common management information service element

CNM
customer network management

CORBA
common object request broker architecture

DCOM
distributed component object model

DCS
digital cross connect system

DWDM
dense wave division multiplexing

EML
element management layer

EMS
element management system

GUI
graphical user interface

HDT
host digital terminal

HFC
hybrid fiber coax

ISV
independent software vendor

ITU
International Telecommunications Union

ITU–T
International Telecommunications Union–Telecommunications Standardization Sector

MRF
multipoint RF transceiver

MTTR
minimum mean time repair

NE
network element

NMF
Network Management Forum (now TeleManagement Forum)

NML
network management layer

NMS
network management system

NOC
network operations center

ODBC
open database connectivity

OEM
original equipment manufacturer

OMG
object management group

OSI
open systems interconnection

OSS
operations support system

PM
performance manager

QoS
quality of service

RBOC
regional Bell operating company

RPC
remote procedure call

RSU
remote service unit

SDH
synchronous digital hierarchy

SIF
SONET Interoperability Forum

SML
service management layer

SNMP
signaling network management protocol

SONET
synchronous optical network

SP
service provider

TMN
telecommunications management network: a body of standards defined by the ITU–T as a reference model for the architecture, design, and implementation of telecommunication management systems

VPN
virtual private network

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