[SIPForum-discussion] SIP-PSTN CANCEL call flow

[Federico piesio]

Dear Murali,

if I'm not wrong it depends on the interworking scheme the gateway supports
(ITU-T Q.1912.5 or IETF 3398), as far as I know the ISUP message for that
scenario should be in both cases REL with Cause value 31.

Regards,
Federico

2010/4/28 Murali Vuppandla <mvuppand at cisco.com>

>  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.
>
> _______________________________________________
> This is the SIP Forum discussion mailing list
> TO UNSUBSCRIBE, or edit your delivery options, please visit
> http://sipforum.org/mailman/listinfo/discussion
> Post to the list at discussion at sipforum.org
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sipforum.org/pipermail/discussion/attachments/20100428/0c4b0f10/attachment-0002.html>