ADTRAN 1204006L1 Manual do Utilizador descarregar pdf (Página 178)

Appendix C. Acronyms/Abbreviations

C-2 Express 5210 User Manual 61200208L1-1

DSR................... data set ready

DSU................... data service unit

DTE ................... data terminal equipment

DTR................... data terminal ready

FECN................. forward explicit congestion notification

FEP..................... front end processor

FIFO................... first in first out

FR....................... frame relay

FRAD ................ frame relay access device

HDLC................ high-speed data link control

IP........................ internet protocol

ISDN................. integrated services digital network

ITU..................... International Telecommunications Union

KA...................... keep alive

LAN................... local area network

LED.................... light emitting diode

LLC.................... logical link control

LMI.................... local management interface

LRC.................... lateral redundancy check

MIB.................... management information base

ms....................... millisecond

NRZ................... non-return to zero

NRZI ................. non-return to zero inverted

OCU................... office channel unit

OOS................... out of service

PLAR................. private line automatic ringdown

PPP..................... point to point protocol

PU ...................... physical unit

PVC ................... permanent virtual circuit

RD...................... receive data

RDL................... remote digital loopback

RFC.................... request for comments

RFECN.............. remote forward explicit congestion notification

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ADTRAN 1204006L1 Manual do Utilizador Página 178