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Appendix C. Acronyms and Abbreviations
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
RNR................... receiver not ready
RR ...................... receiver ready
RS....................... request to send; also recommended standard
RTS .................... request to send
Rx ....................... receive
SAP .................... service access point
SDLC................. synchronous data link control
SES..................... severely errored seconds
SF ....................... superframe
SLIP ................... serial line internet protocol
SNA ................... systems network architecture
SNMP................ simple network management protocol
SR....................... data set ready
SVC ................... switched virtual circuit
SW56 ................. switched 56
sync.................... synchronous
TD ...................... transmit data
telco ................... telephone company
TR ...................... data terminal ready
Tx ....................... transmit
UA...................... unavailable
C-4
TSU IQ+ User Manual
61200275L1-1
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