[SIPForum-discussion] sip prack

[Loic ahnee]

http://www.iplogos.fr/English-Resources/Focus/sip-early-media-early-offer-en.html


2013/11/19 Rajendran Rajarajan <rajendranr7 at gmail.com>

>  Hi,
>
> Retransmissions of the reliable provisional response cease when a matching
> PRACK is received by the UA core.
>
> Try the same scenario after disabling PRACK.
>
> Regards,
> Rajendran R
>  ------------------------------
> From: Zuñiga, Guillermo <Guillermo.Zuniga at cwpanama.com>
> Sent: 19-11-2013 03:34
> To: discussion <discussion at sipforum.org>; Cordoba, Encarnacion<Encarnacion.Cordoba at cwpanama.com>
> Subject: Re: [SIPForum-discussion] sip prack
>
>  Hi fellows.
>
> I would like to understand the following.
>
> I have the scenarios A call B.
>
> In the first invite I am seeing that include the header "Supported:
> 100rel" and then my GW is sending back a 180Ringing/SDP  with "Required:
> 100rel",  and after 7 more 180 my GW is killing the session with 504 Server
> Time Out.
>
>
>
> Question:
>
> 1-What means that "Supported: 100rel" in the first invite coming from the
> Peer?
>
> 2-What means that "Required: 100rel" back in the 180 from my GW? What my
> GW are expecting receive from the Peer? Why is sending 7 more 180 to the
> Peers?
>
> 3-Why then after a timer is killing the session with 504 Server Time out?
>
>
>
> 4-What could happen is don’t send back from my GW "Required: 100rel" in
> the 180, session could continue? What should send me Peer in this case?
>
>
>
> Thanks a lot for all the feedback.
>
> Thanks
>
> Guillermo
>
>
>
>
>
>
>
>   Guillermo Zuniga Especialista de Soporte Técnico Gerencia de Soporte
> Técnico
>
>   Tel: +507 263-6671 Cel: +507 6670-0481  Fax: +507 265-3295 Email:
> Guillermo.Zuniga at cwpanama.com
>
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Loïc AHNEE
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