On 1/18/15 1:07 AM, Imran Saleem wrote:
Dear All,
Can someone please suggest the possible reason for this behavior.
In SBC "The receiving side hooks on before calling party, the line is hold,
the re-Invite changes the stream mode to receive-only and that's why the IP
and port are 0."
What does SIP state..
IP of 0.0.0.0 was the "old" (RFC2543) way of doing hold. The recommended
way of doing hold was changed to a=sendonly/inactive in RFC3261. But the
old way is still allowed. Also IP 0.0.0.0 is a way to set up a call (on
hold) before there are *any* RTP resources assigned to the call.
You should not be upset by this. It is a valid thing to do.
Thanks,
Paul
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