ADTRAN MX2800 M13 User Manual page 178

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
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