Hello,

you have to look at the sip traffic and see if there is something wrong -- one way is with ngrep:

ngrep -d any -qt -W byline "sip" port 5060

Kamailio itself has nothing to do with media stream (the fax content), unless you do rtprelay via rtpengine/rtpproxy. If you have clients behind NAT, then you have to do rtp relaying.

Cheers,
Daniel

Hi there,

We use kamailio 4.3.3. And we have one problem with the fax. We send and receive from and to our network, the fax does not work. Fax reports "other fax not responding". When we send through our network to another operator they receive fax.

What could be wrong?

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-- 
Daniel-Constantin Mierla
http://www.asipto.com - http://www.kamailio.org
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