Configuring the ops analog line card, Table 71 ops analog line card - configuration, Table 71 – Nortel Networks Circuit Card 311 User Manual

Page 144

144

NT1R20 Off-Premise Station Analog Line card

and Meridian 1 Large System Installation and Configuration (NN43021-310)
for more detailed I/O panel connector information and wire assignments
for each tip/ring pair.

Configuring the OPS analog line card

The line type, terminating impedance, and balance network configuration for
each unit on the card is selected by software service change entries at the
system terminal and by jumper strap settings on the card.

Jumper strap settings

Each line interface unit on the card is equipped with two jumper blocks that
are used to select the proper loop current depending upon loop length. See

Table 71 "OPS analog line card - configuration" (page 144)

For units connected to loops of 460 to 2300 ohms, both jumper blocks must
be installed. For loops that are 460 ohms or less, jumper blocks are not
installed.

Figure 24 "OPS analog line card - jumper block locations" (page

146)

shows the location of the jumper blocks on the OPS analog line card.

Table 71
OPS analog line card - configuration

Application

On-premise station (ONS)

Off-premise station (OPS)

Class of Service
(CLS) (Note 1)

ONP

OPX

Loop resistance
(ohms)

0–460

0–2300 (Note 2)

Jumper strap
setting (Note 6)

Both JX.0 and JX.1
off

Both JX.0 and JX.1
on

Loop loss (dB)
(Note 3)

0–1.5

>0–3.0

>2.5–3.0

0–1.5

>1.5–2.5

>2.5–4.5

>4.5–15

TIMP
(Notes 1, 4)

600
ohms

BIMP
(Notes 1, 4)

600
ohms

3COM

3CM2

600
ohms

3COM

3CM2

Gain treatment
(Note 5)

Yes

Note 1: Configured in the Analog (500/2500-type) Telephone Administration program LD 10.

Note 2: The maximum signaling range supported by the OPS analog line card is 2300 ohms.

Nortel Communication Server 1000

Circuit Card Reference

NN43001-311

01.04

Standard

Release 5.0

23 May 2008