Nortel Networks Circuit Card 311 - Manual (Page 146)

146 NT1R20 Off-Premise Station Analog Line card
Figure 24
OPS analog line card - jumper block locations
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 77 "Test parameters screen" (page 312) shows the location
of the jumper blocks on the OPS analog line card.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.