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114 FSU User Manual 61200.130L1-1
Acronyms and Abbreviations
FECN ......................................................forward explicit congestion notification
FEP ..........................................................front end processor
FIFO ........................................................ first in first out
FR ............................................................ frame relay
FRAD ...................................................... frame relay access device
FRF ..........................................................frame relay forum
FSU..........................................................frame relay service unit
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
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
RIP...........................................................routing information protocol
RMA........................................................return material authorization
RR ............................................................receiver ready
RS ............................................................ recommended standard
RTS ..........................................................request to send
Rx ............................................................ receive
SAP .........................................................service access point
SDLC....................................................... synchronous data link control
SLIP .........................................................serial line internet protocol
SNA......................................................... systems network architecture