As others have noted, for this to happen the "proxy" (proxies?) needs to
modify the SDP to cause this to happen. If it does this it has violated
the rules for a proxy. Devices that do this are typically called Session
Border Controllers. It is very common. There are both advantages and
disadvantages to doing this.
Thanks,
Paul
On 7/17/13 5:29 AM, ikuzar RABE wrote:
> Hi all,
>
> I saw a RTP flow which is not directly established between UAC and UAS but
> goes through a SIP proxy ...
>
> Is there any information in SIP message exchange producing this situation ?
>
> Thanks for your help,
>
> ikuzar
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