[SIPForum-discussion] discussion Digest, Vol 148, Issue 1

[venkat ramana]

This is valid a callflow. Offer answer for SDP is completed at INVITE 183.

Regards,
Venkat Ramana

On Thu, Jun 20, 2019, 23:08 <discussion-request at sipforum.org> wrote:

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>    1. SIP Flow with a 200OK(without SDP) to the INVITE (Zu?iga)
>
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> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 20 Jun 2019 15:26:01 +0000
> From: Zu?iga, Guillermo <Guillermo.Zuniga at cwpanama.com>
> To: "discussion at sipforum.org" <discussion at sipforum.org>
> Subject: [SIPForum-discussion] SIP Flow with a 200OK(without SDP) to
>         the     INVITE
> Message-ID:
>         <25d4a03e440c4e7585cd662a04612aa8 at CWP-JFR-EXC01.cwpanama.com>
> Content-Type: text/plain; charset="utf-8"
>
>
> Hi fellows,
>
> I would like to know the following:
>
> I am having the following flow and I would like to know if is a valid flow
> and if the remote SIPGW should be able to handle or complete this dialog
> when receive a 200OK without SDP to the INVITE.
>
> Flow:
> A ->INVITE with SDP
> B<-TRYING
> B<-183 WITH SDP
> A->PRACK
> B<-200OK TO THE PRACK
> B<-180 RINGING WITHOUT SDP
> B<-200OK WITHOUT SDP TO THE INVITE.
> A->ACK TO THE 200OK WITHOUT SDP TO THE INVITE.
>
>
> My question comes, cause I am having audio issue with the client is
> calling us and here I would like to know if could be related that I am
> sending the 200OK without SDP. Or he should be able to complete the dialog
> cause previous to the 200OK without SDP I sent a 183 with SDP?
>
> Please let me know any comments or where in the RFC I  can look for that
> describe this behavior.
>
> Regards,
> Guillermo
>
>
>
>
> Guillermo Zuniga
> Especialista de Soporte T?cnico
> Gerencia de Soporte T?cnico
>
> P:      +507 263-6671   | +507 6670-0481
> E:      Guillermo.Zuniga at cwpanama.com   |W: www.cwpanama.com
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