Is there something blocking RTP traffic from reaching the callee?  Is the 
callee a carrier or the actually endpoint endpoint (aka SIP Phone)?

Mack Hendricks / Head of Support / dOpenSource
web: http://dopensource.com <http://dopensource.com/>
support: +888-907-2085
dSIPRouter <http://dsiprouter.org/> - GUI focused on implementing Kamailio to 
provide SIP Trunking and PBX Hosting Services

> On May 18, 2018, at 12:50 AM, Aqs Younas <[email protected]> wrote:
> 
> Greetings list, 
> 
> 
> I have kamailio server behind nat with rptproxy. But i am getting no voice on 
> the call. After taking trace i could see that rtpproxy was getting rtp 
> packets but not packets was being forwarded towards callee side. 
> 
> Though i see in rtpproxy logs, packets being relayed from caller side. 
> 
> Does rtpproxy wait to receive a single rtp frame from callee before fowarding 
> that to callee?
> 
> Since, i am getting no rtp from callee. So, might be rptrpoxy is waiting to 
> learn source address of callee side rtp, that is why it is not forwarding rtp 
> packets from caller towards callee. 
> 
> 
> Any pointer/suggestion is much appreciated.
> 
> Best Regards, 
> 
> Aqs Younas
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