156 / ISDN PRI and BRI

The dialing plan configured by your customer service representative determines how calls are routed.

Consult your customer service representative to determine whether or not this feature is compatible with your service provider.

Call by Call service selection for PRI

PRI lines can be dynamically allocated to different service types with the Call by Call feature. PRI lines do not have to be pre-allocated to a given service type.

Call types that may be available, depending on your service provider are:

Public

Public calls connect your Norstar set with a Central Office (CO). DID and DOD calls are supported.

Private

Private calls connect your Norstar set with a Virtual Private Network. DID and DOD calls are supported. A private dialing plan may be used.

Tie

Tie lines are private incoming and outgoing lines that connect Private Branch Exchanges (PBX) such as Norstar.

FX (Foreign Exchange)

FX calls connect your Norstar set to a remote CO. It provides the equivalent of local service at the distant exchange.

Modular ICS 4.0 System Coordinator Guide

P0881591 Issue 01

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Nortel Networks Modular ICS 4.0 manual Call by Call service selection for PRI