[SIPForum-discussion] SIP Flow with a 200OK(without SDP) to the INVITE

[Zuñiga, Guillermo]

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 Técnico
Gerencia de Soporte Técnico

P:      +507 263-6671   | +507 6670-0481
E:      Guillermo.Zuniga at cwpanama.com   |W: www.cwpanama.com

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