Nortel CS 1000 Series Installation And Commissioning Manual page 61

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Use the jumper plugs to configure the line powering options for
the SILC. Each port is equipped with its own set of option jumper
plugs, enabling individual configurations for each DSL.
The SILC has three line powering options. These options
are configured using the jumpers located near the backplane
connector as shown in
61).
Figure 16
SILC line power options
Store unused jumper plugs on position J1 of the SILC for future
use. The following are descriptions of the three options and their
jumper settings.
•
Normal power on the TX and RX leads. This option is set
at the factory and provides normal power (-48V or -40V) on
the TX lead and battery return (BRTN) on the RX lead to
power the terminal. To implement it, install one jumper plug
across the RX and BRTN pins, and one across the PWR and
TX pins, as shown in
normal power on the TX and RX leads" (page
Nortel Communication Server 1000
ISDN Basic Rate Interface Installation and Commissioning
NN43001-318 03.01
11 May 2009
Installation procedures 61
Figure 16 "SILC line power options" (page
Figure 17 "Jumper plug settings for
62).