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CSRC Contribution Source identifier

CTI Computer Telephony Integration

CTPG Connection Termination Point Group

CTSS Computer Time-Sharing System

CU Current Unused

cwnd congestion window

CWTS China Wireless Telecommunication Standard Group

EBS Excess Burst Size

ECMP Equal Cost MultiPath

ECN Explicit Congestion Notification

ECT Explicit Congestion Notification Capable Transport

EDR Event-Dependent Routing

EF Expedited Forwarding

EGP Exterior Gateway Protocol

EIR Equipment Identity Register

EL Echo Loss

ELR Edge Label Switching Router

E-LSP EXP-inferred LSP

EMS Element Management System

E-NNI External Network Node Interface

ER Edge Router

FA Foreign Agent

FEC Forward Error Correction

Forwarding Equivalence Class

FER Frame Error Ratio

FIB Forwarding Information Base

FIFO First In First Out

Fin Final

FR Fixed Routing

Frame Relay

FRL Frame Length

FSC Front-end Speech Clipping

FTP File Transfer Protocol

GERAN GSM/Edge Radio Access Network

GGP Gateway-to-Gateway Protocol

GGSN Gateway GPRS Support Node

GI General Interest

GMPLS Generalised MPLS

GMSC Gateway MSC

GoB Good or Better

GPRS General Packet Radio System

GPS General Processor Sharing

Global Positioning System

GRE Generic Routing Encapsulation

GS Guaranteed Service (Intserv class)

GSM Global System for Mobile Communications

GSM-EFR GSM Enhanced Full Rate

GSM-FR GSM Full Rate

GSM-HR GSM Half Rate

GSMP General Switch Management Protocol

GTP GPRS Tunnelling Protocol

GUI Graphical User Interface

GW Gateway

HA Home Agent

HLR Home Location Register

HOL Head Of Line

HSS Home Subscriber Server

HTML HyperText Markup Language

HTTP HyperText Transfer Protocol

ER-LSP Explicitly-Routed Label Switched Path

ESP Encapsulating Security Payload

ETSI European Telecommunication Standards Institute

EU European Union

EURESCOM European Institute for Research and Strategic

Studies in Telecommunications

D

E

F

G

H

DARPA Defence Advanced Research Projects Agency

DC Default Class

DCS Distributed Call Signalling

DE Default class

DEC Decision
Digital Equipment Corporation

DEN Directory Enabled Network

DES Data Encryption Standard

DF Distribution Function

DHCP Dynamic Host Configuration Protocol

DI Data Interface

DiffServ Differentiated Services

Dir Directionality

DMTF Distributed Management Task Force

DNS Domain Name System

DQoS Dynamic Quality of Service

DS Differentiated Services

DSCP Differentiated Services Code Point

DSL Digital Subscriber Line

DSLAM Digital Subscriber Line Access Multiplexer

DSP Digital Signal Processor

DTMF Dual Tone MultiFrequency

DVMRP Distance Vector Multicast Routing Protocol

DWDM Dense Wavelength Division Multiplexing

DWFQ Distributed Weighted Fair Queueing