GL-12 Issue 9 October 1998
363-206-204
GLOSSARY
LOS
Loss of Signal — The complete absence of an incoming signal.
LR
Long Reach.
LS
Low-Speed.
N
Main
Two slots on the DDM-2000 OC-3 shelf in which the OLIU circuit packs are
installed.
Midspan Meet
The capability to interface between signals from two lightwave terminals of differ-
ent vendors. This applies to high-speed optical interfaces.
MD
Mediation Device.
MJ
Major Alarm.
MML
huMan-Machine Language defined by CCITT
MN
Minor Alarm.
MSDT
Multi-Services Distant Terminal.
MTBF
Mean Time Between Failures.
MTBMA
Mean Time Between Maintenance Activities.
Muldem
An older term for function group; now seldom used.
Multiplexing
The process of combining several distinct digital signals into a single composite
digital signal.
Summary of Contents for DDM-2000 OC-3
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Page 10: ...Issue 9 October 1998 363 206 204 Lucent Technologies ...
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Page 58: ...1 ii Issue 9 October 1998 363 206 204 ...
Page 74: ...2 iv Issue 9 October 1998 363 206 204 ...
Page 144: ...2 70 Issue 9 October 1998 363 206 204 Equipment and Rear Access Cable Installation ...
Page 192: ...3 46 Issue 9 October 1998 363 206 204 Equipment and Front Access Cable Installation ...
Page 304: ...6 30 Issue 9 October 1998 363 206 204 Release 7 Installation Tests ...
Page 330: ...7 24 Issue 9 October 1998 363 206 204 Release 8 Installation Tests ...
Page 398: ...9 32 Issue 9 October 1998 363 206 204 Release 13 TARP Installation Tests ...
Page 426: ...11 ii Issue 9 October 1998 363 206 204 ...
Page 492: ...IN 14 Issue 9 October 1998 ...