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B Channel Configuration

Overview

This section describes the third step in the basic ISDN configuration sequence.

Requirement

The following is a requirement for configuring B channels:

• The D channel must be assigned.

B Channel Configure API message

Use the B Channel Configure message to configure B channels. Use care when configuring network-specific elements for the network. Check with your carrier if you need to include network-specific Information Elements.

Trunk-provisioned calls

If placing trunk-provisioned calls (options specific to a group of B channels), the host uses the parameters (configured with this message) in the outgoing ISDN SETUP message to the network. This data is used to encode the correct Information Elements for the called and calling party IEs when using trunk-provisioned parameters for the call type, bearer capability, numbering types, and plans.

Default Configuration

The table below lists the B channel configuration entities and their defaults. Use the B Channel Configuration message to change the default configuration.

Option | Default
--- | ---
Network Type | AT&T Megacom
Outgoing Information Transfer Capability | Voice
Calling Number Type | National Number
Calling Number Plan ID | ISDN Numbering Plan
Calling Presentation Indicator | Presentation Allowed
Calling Screening Indicator | User Provided, Not Screened
Called Number Type | Subscriber Number
Called Number Plan ID | Unknown Numbering Plan

See Integrated Services Digital Network.
Bearer channel, 64Kbps (ISDN) The channel that carries the actual payload (as opposed to D-channels, which carry signaling data that helps route the payload).
Name for the data fields within an ISDN Layer 3 message. See Integrated Services Digital Network.