Nortel Networks 1000 User Manual

Page 137

Application

137

exchange carrier (OPS pairs are usually in the same cable as the PBX-CO
trunks). The traditional OPS scenario configuration is shown in

Figure 24

"Traditional OPS application configuration" (page 138)

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 90

"NTCK80AA/AB/AC/AD" (page 332)

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.

Nortel Communication Server 1000

Circuit Card Reference

NN43001-311

02.06

Standard

27 August 2008