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LTPH-SM-1052-04
A
PPENDIX
A
ACO:
Alarm Cutoff
AIS:
Alarm Indication Signal
ALM:
Alarm
AMI:
Alternate Mark Inversion
ASCII:
American Standard Code for Information
Interchange
B
B8ZS:
Binary 8 Zero Substitution
BER:
Bit Error Rate
C
CDU:
Customer Doubler
CLOC:
Customer Local Loopback
CO:
Central Office
CR:
Critical Alarm
CREM:
Customer Remote Loopback
D
DACS:
Digital Access Cross-connect System
DCE:
Data Communication Equipment
DS3:
Digital Signal 3
DSU/CSU: Digital Service Unit/Channel Service Unit
DSX-1:
Digital Signal Cross-connect Level 1
DTE:
Data Terminal Equipment
E
EMI:
ElectroMagnetic Interference
ESD:
Electrostatic Discharge
F
FGND:
Frame Ground
FLB:
Facility Loopback
H
HDSL:
High-bit-rate Digital Subscriber Line
HMS-358 List 5 and List 6
F - A
BBREVIATIONS
HFA:
HiGain Fan Assembly
HLU:
HiGain Line Unit
HMU:
HiGain Management Unit
HRU:
HiGain Remote Unit
I
IP:
Internet Protocol
IS:
In-Service
L
LED:
Light Emitting Diode
LLOS:
Local Loss of Signal
M
MAL1:
Margin Alarm 1
MAL2:
Margin Alarm 2
MDF:
Main Distribution Frame
MJ:
Major Alarm
MN:
Minor Alarm
MOP:
Method of Procedure
N
NDU:
Network Loopback
NEBS:
Network Equipment-Building System
NID:
Network Interface Device
NLOC:
Network Local Loopback
NREM:
Network Remote Loopback
O
OOS:
Out of Service
OSTS:
Open Span Termination System
P
PBX:
Private Branch Exchange
PVC:
Permanent Virtual Circuit
July 14, 2002
Appendix F - Abbreviations
85
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