D-2 61200290L1-1G
Appendix D, Acronyms/Abbreviations MX2800 M13 Multiplexer User Manual
CV.................................coding violation
D
dB................................. decibel
DBU..............................dial backup
DCD..............................data carrier detect
DCE..............................data communications equipment
DDS.............................. digital data service
DLCI............................ data link connection identifier
DS1............................... digital signal Level 1
DS3............................... digital signal Level 3
DSR.............................. data set ready
DSU.............................. data service unit
DSX-1...........................digital signal cross connect, Level 1
DTE.............................. data terminal equipment
DTR..............................data terminal ready
E
ES................................. errored seconds
Eq................................. equipment
Eqpt..............................equipment
EXZ.............................. excessive zeros
F
FBE...............................F-bit errors
FCC.............................. Federal Communications Commission
FDL.............................. facility datalink
FEAC........................... far-end alarm and control
FEBE............................far-end block error
H
HSSI............................. high-speed serial interface
I
IP.................................. internet protocol
K
KA................................ keep alive