[SR-Users] rtpengine symmetric RTP behavior

[Andreas Granig]

Hi,

On 08/11/2014 08:34 PM, Narsay, Deep wrote:
> Is there any way rtpengine can be configured to use same UDP port to
> receive and transmit RTP  packets?
> 
> The set up I'm trying is 
> 
> SIP_Client -->  Kamailio/rtpengine  -->  Freeswitch 
> Internet            Internet         LAN          LAN 192.168.1.10
> 
> I tried /rtpengine_offer / in  kamailio.cfg, 
> but rtpengine seems to always use different ports to Tx/Rx the packets. 
> (Causing Freeswitch to auto adjust its ports, which mutes the audio
>  channel one way).

Well, rtpengine actually uses the same port to send and receive traffic
towards a UA. However, it uses two different ports for the two parties,
which shouldn't be an issue, because Freeswitch will only see the one
port towards itself.

Andreas