[SIPForum-discussion] SIP-PSTN CANCEL call flow

[ಕುಮಾರ್ .ಜೆ .ಟಿ]

If it is case with SIP to ISUP interworking, the cause code in the
release(REL of ISDN/ISUP) message will be normal call clearing with cause
code 16.

Thanks
Kumar

On Wed, Apr 28, 2010 at 7:20 AM, Murali Vuppandla <mvuppand at cisco.com>wrote:

>  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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