ADTRAN MX2800 M13 - Page 178

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