No call preservation when phones fail from sub to pub

Unanswered Question

CM4.2(1) phones are registered to Subscriber. When connectivity to Sub fails, calls are dropped during re-reg to Pub. Is there a services parameter to ensure call preservation? This suppossedly happened between two IPT phones on the same IP network (no gateway involved). I am making an assumption that the RTP stream's path was not also going over the same network pipe that the outage occurred.


I have this problem too.
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jbarcena Fri, 02/08/2008 - 13:26

Is this happening with internal calls, or with calls to the PSTN or perhaps both? If it is with calls to the PSTN, then what type of Gateway are you using, MGCP or H.323? Do you have the GW registered to the same server as the phones?

It is happening with internal calls and that is what is concerning me. (The gateways are MGCP and should be registered to the same CM as the phones.) I have not been present when it happened so I don't know all the could very well be that whatever network outage is occurring is also interrupting the RTP stream. I just wanted to make sure there is not any global/enterprise/service setting for call preservation that I don't know about.



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