Feature Interaction; Introduction; Integrated Services Access - Nortel DMS-250 Reference Manual

Feature interaction

Introduction

The services and features supported on PRI are listed below, and described
in this chapter:

Integrated services access

With integrated services access (ISA), any open circuit can originate or
terminate any subscribed service. With this service-based architecture, calls
originating over an ISA PRI facility are handled based on the call type.
integrated services access
call type delivery
bearer capability for PRI
calling number delivery
PRISM service
VNET service
SAC (800/900) service
call authorization
suppcode/account code collection
PRI data calls
network call transfer
user to user
network call identifier
EVS audio response unit
RLT/ATP
Fraud Call Interrupt
Digital Switching Systems DMS-250 ISDN Reference Manual MWC14 (CSP14)
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