User guide

Acronyms
Commonly used acronyms and abbreviations
Acronym/Abbreviation
Description
B8ZS
Bipolar 8 Zero Substitution
FXO/CO
Central Office Side Equipment
FXS/Sub
Subscriber side equipment
LED
Light Emitting Diode
RX
Receive
TX
Transmit
RED
Red LED color
YEL
Yellow LED color
GRN
Green LED color
Introduction# RLH Industries, Inc. • 866-DO-FIBER • www.fiberopticlink.com! 19