ADTRAN 1200130L2 User Manual
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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