Appendix E - Abbreviations
LTPH-TP-1044-01, Issue 1
62
April 6, 2001
HXU-358 V1.04
A
PPENDIX
E - A
BBREVIATIONS
A
ACE:
Access Concentrator Express
AIS:
Alarm Indicator Signal
AMI:
Alternate Mark Inversion
B
B8ZS:
Bipolar with 8-zero Substitution
BER:
Bit Error Rate
BPV:
Bipolar Violation
C
CO:
Central Office
CR:
Critical alarm
CV:
Code Violation
CVCP-P: Code Violation CP-bit Parity
CV-L:
Code Violation - Line
CVP-P:
Code Violation P-bit Parity
D
DACS:
Digital Access Crosspoint
Switching
DS1:
Digital Signal, level 1
DS3:
Digital Signal, level 3
DSX-1:
Digital Signal Cross-connect
Level 1
E
ECN:
Engineering Change Notice
ECO:
Engineering Change Order
ES:
Errored Seconds
ESCP-P: Errored Seconds CP-bit Parity
ESD:
Electrostatic discharge
ES-L:
Errored Seconds - Line
ES-P:
Errored Seconds - Port
ESP-P:
Errored Second P-bit Parity
EXZ:
Excessive Zero
F
FE:
Far-End alarm
H
HDB3:
High Density Bipolar 3
HLU:
HiGain Line Unit
HMU:
HiGain Management Unit
HXU:
HiGain Multiplexer Unit
I
IN-SRVC: In-Service
IP:
Internet Protocol
IS:
In-Service
