Nortel Networks Circuit Card 311 - Manual (Page 148)

148 NT1R20 Off-Premise Station Analog Line card
battery and ringing. Facilities are generally provided by the local exchange
carrier (OPS pairs are usually in the same cable as the PBX-CO trunks).
The traditional OPS scenario configuration is shown in
Figure 25 "Traditional
OPS application configuration" (page 149) .
Note: OPS service should not be confused with Off-Premise EXtension
(OPX) service. OPX service is the provision of an extension to a main
subscriber loop bridged onto the loop at the serving CO or PBX. (OPX
as used to denote off-premise extension service should not be confused
with the OPX class-of-service assigned in the Analog (500/2500-type)
Telephone Administration program LD 10.)
The NT1R20 Off-Premise Station (OPS) Analog Line Card is designed
primarily to provide an interface for off-premise station lines. An OPS line
serves a terminal – usually, but not exclusively, a telephone set – remote
from the PBX either within the same serving area as the local office, or
through a distant office. The line is not switched at these offices; however,
depending on the facilities used, the local office serving the OPS station can
provide line functions such as battery and ringing. Facilities are generally
provided by the local exchange carrier (usually, OPS pairs are in the same
cable as the PBX-CO trunks).
The traditional OPS scenario configuration is shown in Figure 91
"NTCK80AA/AB/AC/AD" (page 338) .
The NT1R20 Off-Premise Station (OPS) Analog Line Card is designed
primarily to provide an interface for Meridian 1 off-premise station lines.
An OPS line serves a terminal—typically, but not exclusively, a telephone
set—remote from the PBX either within the same serving area as the local
office or through a distant office. The line is not switched at these offices;
however, depending on the facilities used, the local office serving the OPS
station may provide line functions such as battery and ringing. Facilities are
generally provided by the local exchange carrier (usually, OPS pairs are
in the same cable as the PBX-CO trunks). The traditional OPS scenario
configuration is shown in
"QPC430 and QPC723 interfaces" (page 472) .
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
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