[OpenSIPS-Devel] Regarding the CANCEL request

[doolin wu]

Hi Bogdan,

Yes, The caller device resend  the INVITE with credentials. It caused the
callee rining.

Regards,
Steven

On Mon, Nov 30, 2009 at 6:15 PM, Bogdan-Andrei Iancu <bogdan at voice-system.ro
> wrote:

> Hi Steven,
>
> Is the caller device doing retransmission for the INVITE (which has the
> credentials) ?
>
> Regards,
> Bogdan
>
> doolin wu wrote:
> >
> >
> >     I'm facing a CANCEL problem now. The problem can be described as
> >     "UAC canceled the INVITE but UAS still state ringing status"
> >     The UAS is a desk phone connected to VoIP network by a VoIP
> >     gatway, the SIP server is OpenSIPS 1.5.
> >
> >     Based on the SIP singaling at UAC side, there scenarios to cause
> >     the problem:
> >     *1. Cancel before 407 Proxy Authentication Required*
> >     INVITE ->
> >     100 ->
> >     CANCEL->
> >     200 for CANCEL ( from proxy server)<-
> >     407 for INVITE <-
> >     ACK ->
> >     INVITE (with authorization) ->
> >     180 <-
> >
> >     In this case, the INVITE with authorization caused the UAS rining.
> >     My question is shall UAC send INVITE after receive 407 if the
> >     first INVITE is canceling?
> >     ...
> >     *2. Cancel after 407 Proxy Authentication Required.*
> >     INVITE ->
> >     100 ->
> >     407 <-
> >     CANCEL->
> >     400 for CANCEL <-
> >     ACK ->
> >     INVITE (with authorization) ->
> >     180 <-
> >     The reason caused UAS rining is same with case 1.
> >     How to handle this scenario?
> >     The cancel was treated as bad request due to the INVITE has
> >     generate final response 407.
> >     Shall UAC send CANCEL again when receive 180?
> >     --
> >     Best Regards,
> >     Steven Wu
> >
> >
> >
> >
> > --
> > Steven Wu
> > Teleca Mobile Solution
> > ------------------------------------------------------------------------
> >
> > _______________________________________________
> > Devel mailing list
> > Devel at lists.opensips.org
> > http://lists.opensips.org/cgi-bin/mailman/listinfo/devel
> >
>
>
> --
> Bogdan-Andrei Iancu
> www.voice-system.ro
>
>
> _______________________________________________
> Devel mailing list
> Devel at lists.opensips.org
> http://lists.opensips.org/cgi-bin/mailman/listinfo/devel
>



-- 
Steven Wu
Teleca Mobile Solution
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