[Serusers] HELP!!! User AGent don't send ACK after 200 OK message.! HELP!!!

Andrei Pelinescu-Onciul pelinescu-onciul at fokus.fraunhofer.de
Fri Oct 1 20:05:27 CEST 2004


On Sep 30, 2004 at 15:56, armando <armandom at ctitelnet.com> wrote:
> Hi!
> 
> I have tried this with two diferents UA.... ATA -186 version 2.15  and
> Sipura/SPA2000-2.0.10
> 
> and always the same result.... but one thing i want to point out: 
> 
> the UA is not sending the ACK message only when it is located behind NAT and
> Ser/rtp proxy are behind another NAT......if SER/Rtp Box have real ip, no
> behind NAT then the user Agent is performing well and the call get two-way
> audio....
> 
> How can't this change it's behavior....??? always the UA is behind NAT...
> Always we're using rtpProxy....we modified the nathelper to include
> Advertise address of the rtpProxy when we located SER/rtpProxy behind Nat...
> and we can make successful calls from and to External customers with realip
> both.... but if one is behind nat....then we get just one way audio, because
> the UA behind nat is not sending ACK message...

Please send a message trace and your ser.cfg.
Make sure you are record-routing and you set the proper advertised
address in your ser.cfg.

Andrei




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