Hi,

The 18x MUST contain a Contact header, and MAY (if inserted by proxies in the
signalling path) contain Record-Route header(s).

Regards,

Christer Holmberg
Ericsson Finland

����� wrote:

> Hi..
>
> I would like to know How PRACK will be routed.. when original Request forked..
>
> Let's think What will be done by Forking Proxy when it meets following situation..
>
> 1. INVITE (Supported : 100Rel   - forking)
> UAC->Forking Proxy -> UAS1
>                                -> UAS2
>                                -> UAS3
>
> 2. 180 (Require : 100Rel, No Record-Route, No Contact)
> UAC<-Forking Proxy <- UAS1
> UAC<-Forking Proxy <- UAS2
> UAC<-Forking Proxy <- UAS3
>
> 3. PRACK (forking)
> UAC->Forking Proxy -> UAS1
>                                 -> UAS2
>                                 -> UAS3
> UAC->Forking Proxy -> UAS1
>                                 -> UAS2
>                                 -> UAS3
> UAC->Forking Proxy -> UAS1
>                                 -> UAS2
>                                 -> UAS3
>
> Is above Flow Correct??
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