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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