Call By Call Service For Pri - Nortel ICS Install Manual

472 / System prgrming

Call by Call service for PRI

Call by Call service selection allows a user to access services
or private facilities over a PRI line without the need for
dedicated facilities. The different services represent different
types of access to the network. Various services are available
depending on the chosen protocol. The list below identifies the
supported services
Call by Call service selection is supported for the following
protocols:
• National ISDN 2 (NI-2)
• DMS-100 custom
• DMS-250 (MCI, Sprint, Generic)
• AT&T 4ESS custom
The following Call by Call Services are supported:
Public
Foreign
Exchange
(FX)
Tie
Modular ICS 7.1 Installer Guide
Public calls connect Norstar and a Central
Office (CO). Both incoming (DID) and out-
going (DOD) calls are supported. Dialed dig-
its conform to the standard North American
dialing plan (E.164 standard).
Foreign exchange service connects a Norstar
site to a remote central office (CO). This pro-
vides the equivalent of local service at the
remote location.
Tie lines are private incoming and outgoing
lines that connect Private Branch Exchanges
(PBXs) such as Norstar.
Installer password required
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