Appendix C - Abbreviations
150-319-205-05, Issue 5
46
January 26, 2000
ELU-319 List 5E and List 6E
A
PPENDIX
C - A
BBREVIATIONS
Below is a list of acronyms used throughout this document.
2B1Q
2 Binary, 1 Quaternary
AIS
Alarm Indicator Signal
BPV
Bipolar Violation
CI
Customer Installation
CO
Central Office
CLOC
Customer Local Loopback
CPE
Customer Premises Equipment
CRC
Cyclic Redundancy Check
CREM
Customer Remote Loopback
DDS
Digital Data Service
G.703
E1 Transmission System
ES
Errored Seconds
ESF
Extended Superframe
HCDS
High Capacity Digital Service
HDSL
High-bit-rate Digital Subscriber Line
HDU
HiGain Doubler Unit
HLU
HiGain Line Unit
HRU
HiGain Remote Unit
LOS
Loss of Signal
LOSW
Loss of Sync Word
NLOC
Network Local Loopback
NMA
Network Management and Administration
NREM
Network Remote Loopback
POTS
Plain Old Telephone Service
SF
SuperFrame
SNR
Signal-to-Noise Ratio
STS
Span Termination System
UAS
Unavailable Seconds