Nortel Networks Circuit Card 311 User Manual
Page 119
119
NT1R20 Off-Premise Station Analog
Line card
Contents
This section contains information on the following topics:
"Physical description" (page 121)
"Functional description" (page 124)
"Electrical specifications" (page 135)
"Connector pin assignments" (page 142)
"Configuring the OPS analog line card" (page 144)
Introduction
The NT1R20 Off-Premise Station (OPS) analog line card is an intelligent
eight-channel analog line card designed to be used with 2-wire analog
terminal equipment such as analog (500/2500-type) telephones and analog
modems.
The NT1R20 Off-Premise Station (OPS) analog line card provides eight
full-duplex analog telephone line interfaces. Each line has integral
hazardous and surge voltage protection to protect the system from damage
due to lightning strikes and accidental power line connections. This card is
normally used whenever the phone lines must leave the building in which
the switch is installed.
The NT1R20 OPS analog line card provides:
•
line supervision
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311
01.04
Standard
Release 5.0
23 May 2008
Copyright © 2003-2008, Nortel Networks
.