ADTRAN MX2800 User Manual page 118

Appendix C. Acronyms/Abbreviations
PVC ................... permanent virtual circuit
RD...................... receive data
RDL ................... remote digital loopback
RL....................... remote loopback
RMA .................. return material authorization
RS....................... request to send
RTS .................... request to send
Rx ....................... receive
SA ...................... service affecting
SEFS .................. severely errored framing seconds
SES..................... severely errored seconds
SLIP ................... serial line internet protocol
SNMP................ simple network management protocol
SONET.............. synchronous optical network
SR....................... data set ready
SW56 ................. switched 56
sync.................... synchronous
TA....................... terminal equipment available
TD ...................... transmit data
TDM.................. time division multiplexing
TM ..................... test mode
TR ...................... data terminal ready
Tx ....................... transmit
UAS ................... unavailable seconds
WAN.................. wide area network
XCV ................... excessive coding violations
C-4 MX2800 User Manual 61200290L1-1