[SR-Users] rtpproxy not forwarding rtp packets.

Bilal Abbasi bilaln018 at gmail.com
Fri May 18 09:46:29 CEST 2018


Actually they dont even get out of rtpproxy, we cant see that in the in
sngrep/tcpdump.
We are getting packets from callee but nothing going out of
rtpproxy(talking about local dump)

Regards
Abbasi

On Fri, May 18, 2018, 12:13 Giovanni Tommasini - evosip
<giovanni.tommasini at evosip.cloud> wrote:

> Hi Younas,
>
> when you have a call if you make a trace in your sip server with sngrep
> or tshark can you see the RTP packet ?
> you says "I have kamailio server behind nat with rptproxy.", so is it
> possible that the router in front your SIP server blocks the traffic? could
> you have a trace there?
> I mean the packets exit the rtpproxy but don't arrive to callee or just
> don't come out of the rtpproxy?
>
> Giovanni Tommasini |
> *‚Äč‚Äčevosip* <http://evosip.cloud>
>
>
> 2018-05-18 1:36 GMT+02:00 Aqs Younas <aqsyounas at gmail.com>:
>
>> Thanks for replying. Callee is actually a sip provider. I see no firewall
>> or iptables rules on server to prevent rtp following towards callee.
>>
>> Is there anything i can do to see which thing is blocking rtps.
>>
>> Best
>>
>> On Fri, 18 May 2018 at 3:59 AM, Mack Hendricks <ap at goflyball.com> wrote:
>>
>>> 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
>>> 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 <aqsyounas at gmail.com> 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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