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Cause Code mapping enables you to map the cause code that the IMG receives from the terminating side of a call to a different cause code that the IMG will send to the originating side of the call. You can assign a cause code mapping table to any incoming channel group that requires special cause code handling.
See IMG 1010 - Configuring Error Handling
Treatments
In response to a Cause Code, the IMG can be configured to release the call and send the Cause Code to the network, or it can play a Treatment: an announcement or a tone.
You can map the Treatment that is played in response to a particular Cause Code override, at the channel group level, the treatment that the IMG normally associates with a cause code. When you override the treatment assigned to a cause code, your custom treatment takes precedence over any treatment that either a service or the default cause code handling returns.
See IMG 1010 - Configuring a Channel to Play Treatment