[SIPForum-discussion] SIP-PSTN CANCEL call flow

[Murali Vuppandla]

A is a SIP end point where as B is simulated legacy POTS subscriber. A calls
B, B rings and A terminates the call before B answers. We are all well aware
that CANCEL is being sent from UAC(SIP) followed by 200OK from the Gateway.

 

What's the message sequence at the other end(b/n gateway and POTS
subscriber). And what about the release cause in RLC message ??

 

If anyone has come across this scenario, pls. update me.

 

Regards,

Murali.

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