[Serusers] rtpproxy bad port?

[Olle E. Johansson]

Jan Janak wrote:

> On 26-11 20:43, Olle E. Johansson wrote:
> 
>>Bogdan-Andrei IANCU wrote:
>>
>>
>>>Hi,
>>>
>>>Your client must support symmetric RTP for rtpproxy to work. It must 
>>>send and receive media on the same port - that's the only way to make 
>>>media to cross the NAT; check if you can configure your client to do so.
>>
>>Updated the Wiki
>>http://www.voip-info.org/tiki-index.php?page=Portaone+rtpproxy
>>
>>Anyone that knows which clients support symmetric RTP?
> 
> 
>   Cisco, Mitel, Grandstream, Windows Messenger, X-Lite, Snom, kphone,
>   ATA.
> 
>   The vast majority of clients available today support symmetric RTP.
Been googling on "Symmetric RTP", but can't really find a definition in an
draft or RFC. Any help?

/O