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Generate ringback tone over ISDN lines for incoming calls.


hen customer having an issue where incoming calls from t1 pri are not being sent a ringback tone and if it is required that the Vega generates these progress tones on the TE ISDN interface, then at the CLI prompt type:

set _advanced.isdn.user_progress=1

Save and reboot Vega to activate the changes.


1. If the Vega DSL is configured as NT it will always generate the call progress tones. E.g. ringback and disconnect tones.

2. Typically wait_for_connect and user_progress configuration parameters should either both set to 1 or both set to 0.

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