User guide

Acronyms
Commonly used acronyms and abbreviations
Acronym/Abbreviation
Description
B8ZS
Bipolar 8 Zero Substitution
AMI
Alternate Mark Inversion
CFJ
Copper Fiber Junction (also referred to as Demarc)
CO
Central Office
CPE
Customer Premises Equipment
Demarc
Location of RLH CO equipment and Telco connection
GPR
Ground Potential Rise
LED
Light Emitting Diode
Sub
Subscriber
NIU
Network Interface Unit
RX
Receive
TX
Transmit
Color abbreviations
Abbreviation
Color
BLU
Blue
GRN
Green
ORG
Orange
RED
Red
YEL
Yellow
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