[Users] Problems with one sided audio..

[Daniel-Constantin Mierla]

I am not using mediaproxy currently, so I do not know if you need to use 
functions from nathelper. However, you should call fix_nated_sdp() for 
the INVITE and 183/200 replies. Looking at next configs together might help:

http://voip-info.org/wiki/view/OpenSER+And+Mediaproxy
http://voip-info.org/wiki/view/OpenSER+And+RTPProxy

Cheers,
Daniel


On 11/15/06 18:39, nick wrote:
> nick wrote:
>> I have a situation where I make a call to a pstn provider, everything 
>> works correctly on the SIP level, INVITEs, OKs, ACKs and BYEs are all 
>> passing correctly through my server, but for some reason, I'm unable 
>> to get audio to work correctly on both sides.
>>
>> At the moment I'm using Openser 1.1.0 with mediaproxy (and a slightly 
>> modified openser.cfg based on the mediaproxy one on the openser site, 
>> I have a some options for accounting and forwarding to the pstn 
>> gateway)..
>>
>> 89.x.x.16 is my openser server.
>>
>> 89.x.x.8 is my NAT firewall, which is portforwarding all UDP from 
>> 5000 to 30000 to 192.168.1.67 (my internal machine, with X-Lite).
>>
>> x.x.x.53 is my PSTN provider's SIP server
>>
>> x.x.x.3 is my PSTN provider's media server.
>>
>> this is the SIP dialog:
>
>> U 89.x.x.16:5060 -> x.x.x.53:5060
>> INVITE sip:00390721111111 at x.x.x.53:5060 SIP/2.0.
>> Record-Route: <sip:89.x.x.16;lr=on;ftag=173a892a>.
>> Via: SIP/2.0/UDP 89.x.x.16;branch=z9hG4bK860f.0d8bc646.0.
>> Via: SIP/2.0/UDP 
>> 192.168.1.67:26380;received=89.x.x.8;branch=z9hG4bK-d87543-cb65401207770316-1--d87543-;rport=26380. 
>>
>> Max-Forwards: 69.
>> Contact: <sip:nick at 89.x.x.8:26380>.
>> To: "mobilia"<sip:00390721111111 at pstnprovider.com>.
>> From: "Nick Warr - Mobilia"<sip:nick at logycs.it>;tag=173a892a.
>> Call-ID: N2YyNGJmMjBhZjYwMjY3OWExMmVmYzYyNDhjMTgzNzY..
>> CSeq: 1 INVITE.
>> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, 
>> SUBSCRIBE, INFO.
>> Content-Type: application/sdp.
>> User-Agent: X-Lite release 1006e stamp 34025.
>> Content-Length: 261.
>> P-hint: outbound.
>> .
>> v=0.
>
>
>
>> o=- 1 2 IN IP4 192.168.1.67.
>> s=CounterPath X-Lite 3.0.
>> c=IN IP4 192.168.1.67.
>
> ^^^^^^^^^^^^^^^^^^^^^^^^^^
>
> This is my problem, right here.
>
>
> I've found the correct way to correct the problem, fix_nated_spd();
> but I'm not sure where in my routing logic I need to put it..
>
> If needed I can send my openser.cfg, I just need to be able to fix the 
> SDP NATing.
>
>
>> t=0 0.
>> m=audio 13234 RTP/AVP 0 98 3 101.
>> a=alt:1 1 : AtyyaMHs +WwsY5o+ 192.168.1.67 13234.
>> a=fmtp:101 0-15.
>> a=rtpmap:98 iLBC/8000.
>> a=rtpmap:101 telephone-event/8000.
>> a=sendrecv.
>
>
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