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On the Avaya IR system, voice response applications are assigned to channels. When a call arrives on a DEFINITY or MultiVantage port, it goes to the corresponding Avaya IR channel, and the application assigned to the channel will execute. So, understanding how switch ports map to Avaya IR channels is a prerequisite to knowing which voice response applications will run for different calls.
For each incoming call, the VoIP subsystem selects the first VoIP channel that is in the INSERV state and is available. For outgoing calls, the VoIP subsystem does not select the Avaya IR channel. Instead, the call control application placing the outgoing call selects a free channel and then places the call through the VoIP subsystem.
The number of available VoIP channels is determined by:
