Hi All,
I have the following call flow:
PSTN===Media Gateway-----UAS
Call flow is made from PSTN phone to UAS.
Media --------------UAS
Gateway
INVITE-------->
<--------100 Trying
<--------180 Ringing
At this point, can UAS send a CANCEL to the media gateway?
From the discussion in various mailing lists, I understand that UAS can
not send a CANCEL request in this scenario. It can send a 4xx/6xx
But, I could not find any RFC which talks about this. Could any one
please provide info. on the RFC which talks about the above scenario?
TIA,
Jagan
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