Wiring The Bri Network Interface - Nortel Modular ICS 6.0 Installer's Manual

252 / Connecting the wiring

Wiring the BRI network interface

A network interface provides the connection between the
ISDN network and the Modular ICS.
If the card in the ICS is configured as a T-loop, the ICS is
wired to the network connection using an NT1.
See T reference points on page 51 for more information about
the NT1.
Wiring for T network connection
Pin (jack or
plug)
1
2
3
4
5
6
7
8
The Modular ICS supplies the NT1 functionality to a U-NT
loop, allowing a direct connection to the network. The
connection may use a plug and jack, or may be directly wired.
Wiring for U-NT network interface
Pin (jack Norstar connection (for
or plug) plug to network interface
1 not used
2 not used
3 not used
4 R
5 T
Modular ICS 6.0 Installer Guide
NT1 connection
(for jack)
not used
not used
+Rx
+Tx
-Tx
-Rx
not used
not used
jack)
ICS and optional TE
connection (plug)
optional power source 3 (+)
optional power source 3 (-)
+Tx
+Rx
-Rx
-Tx
optional power sink 2 (-)
optional power sink 2 (+)
Network interface connection
(jack)
optional battery status indicator (+)
optional battery status indicator (-)
no connection
R
T
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