Nortel Modular ICS 7.1, Install Manual

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Welcome to ISDN /
65
N0130943 02 Modular ICS 7.1 Installer Guide
BRI Card
The loops on BRI-U and BRI-ST cards can be programmed to
support either network or terminal connections. This allows
you to customize your arrangement of lines, voice terminals,
data terminals and other ISDN equipment.
Detailed wiring information for BRI and PRI network and
terminal connections is included in the
Installation on page
227.
BRI-U2 and BRI-U4 card
A BRI-U2 card supports two loops and the BRI-U4 supports
four loops. Each loop can be individually programmed to
provide one of the following:
• a U-LT reference point connection for terminal equipment
(TE) with built-in NT1 functionality (U interface)
• a U-NT reference point connection for direct connection to
an ISDN network
BRI-ST card
A BRI-ST card provides four loops. Each loop can be
individually programmed to one of the following:
• an S reference point connection (S loop) to ISDN terminal
equipment (TE)
• a T or S reference point connection (T loop or S loop) to an
ISDN network using an external NT1