[Users] T.38 together with OpenSER+RTPProxy and OpenPBX not working

[Bogdan-Andrei Iancu]

Hi Bastin,

probably there is  kind of a RTP deadlock between the RTPproxy and 
OpenPBX - both are waiting for the other party to send the media before 
sending on its turn.

try something like:
    if (nat_uac_test("8")) {
          force_rtp_proxy();
    } else {
          force_rtp_proxy("r");
    }

refer to http://www.openser.org/docs/modules/1.2.x/nathelper.html for 
more details.

regards,
bogdan


Bastian Schern wrote:

> Hi everybody,
>
> I've got a question: Does anybody get T.38 working between OpenPBX and 
> OpenSER + RTPProxy?
>
> The following scenarios are working fine:
>
> 1: SIP-FAX1 (pub. IP) <-> OpenPBX             <-> SIP-FAX2 (pub. IP)
> 2: SIP-FAX1 (NAT)     <-> RTPProxy+OpenSER    <-> SIP-FAX2 (pub. IP)
> 3: SIP-FAX1 (NAT)     <-> RTPProxy+OpenSER    <-> SIP-FAX2 (NAT)
> 4: SIP-FAX1 (pub. IP) <-> OpenSER <-> OpenPBX <-> SIP-FAX2 (pub. IP)
>
>
> But the following scenario is not working:
>
> SIP-FAX1 (NAT) <-> RTPProxy+OpenSER <-> OpenPBX <-> SIP-FAX2 (pub. IP)
>
>
>
> It seems to be that the RTPproxy has a problem with the OpenPBX but no 
> Problem with SIP-FAX-ATAs.
>
> Does anybody have an idea what's going wrong???
>
>
> Cheers
>     Bastian
>
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