About Destination Choosers

Destination choosers are dynamically loaded with the Trailhead software and determine how Trailhead should choose a destination. Both the Trailhead server and the Trailhead medium contain destination choosers. In ICM Web configurations, the default destination choosers rely on the ICM script to actually determine the correct destination for the call. The default destination choosers in the ICM Web Option environment are:

Trailhead component

Destination chooser

Description

Trailhead server

DcRemote

Sends a message to one of the configured CanRoute connections, asking the server on the other side of this connection to supply a destination, using its DestChooser.

Trailhead medium
(on the CMB server)

DcICM

Sends a RouteRequest message to the Web PG which runs an ICM script and returns a label. The label matches a destination, which is returned.

Trailhead medium

DcNull

Allows a medium to accomplish ONLY Basic Callback. Use DcNull if the Trailhead medium should not perform destination routing.

Trailhead component	Destination chooser	Description
Trailhead server	DcRemote	Sends a message to one of the configured CanRoute connections, asking the server on the other side of this connection to supply a destination, using its DestChooser.
Trailhead medium (on the CMB server)	DcICM	Sends a RouteRequest message to the Web PG which runs an ICM script and returns a label. The label matches a destination, which is returned.
Trailhead medium	DcNull	Allows a medium to accomplish ONLY Basic Callback. Use DcNull if the Trailhead medium should not perform destination routing.