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