Hi All,
Thanks for the answers. It was finally agreed that UAS should not send a
CANCEL in this case.
Regards,
Jagan
On 11/15/07, Vishal Mathur <[EMAIL PROTECTED]> wrote:
>
> Hi Jagan,
>
> I think UAS behavior is not correct as per SIP RFC.
> In no case a UAS (US which receive calls) can send a Cancel. It can only
> send Responses.
>
> Can you provide us the logs (tcpdump) of UDP messages send by UAS and
> Gateway? Also give us some more description regarding the UAS and Media
> Gateway device (company, model and version). Probably it might be a bug
> / issue in UAS SIP stack code.
>
> PS: Try the same case with other device and contact vendor of UAS
> regarding this issue. They might has new version of firmware already.
>
> Regards,
>
> Vishal Mathur
> Jabber ID: [EMAIL PROTECTED]
> Symantec Corporation
> www.symantec.com
> _________________________________
> Office: +91-20-66067655
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of
> Jagan Mohan
> Sent: Wednesday, November 14, 2007 5:35 PM
> To: [email protected]
> Subject: [Sip-implementors] UAS sending a CANCEL
>
> 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
> _______________________________________________
> Sip-implementors mailing list
> [email protected]
> https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
>
_______________________________________________
Sip-implementors mailing list
[email protected]
https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
