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[osip-dev] Extend call ringing

From: Sithara Santharam
Subject: [osip-dev] Extend call ringing
Date: Fri, 26 Apr 2013 16:29:07 +0530

Please assume the scenario where A calls B. B keeps ringing without answering. B is pre-configured to ring for 20 seconds before dropping an unanswered call. So after 20 seconds B drops call.

I would like to know if there is a way in which the caller A can extend the call by sending re-invite so that B keeps ringing for another period. If so, is there a particular format/parameters for the re-invite? 

[This scenario becomes more meaningful in case when there is an Auto-attendant in between, but let us assume direct call from A to B for now.]

Can anyone please tell me if this is possible.


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