[SIPForum-discussion] sip prack

[Paul Kyzivat]

It sounds like you haven't read RFC3262.
Read that carefully, and then come back if you still have questions.

Actually, a better place for such questions is:
sip-implementors at lists.cs.columbia.edu

	Good Luck,
	Paul

On 11/14/13 9:01 PM, Zuñiga, Guillermo wrote:
> 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
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> Email: 	Guillermo.Zuniga at cwpanama.com
>
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