Lack of audio while using Flashphoner

[Muhammad]

My test server with Flashphoner Web Call Server is connectd to a SIP trunk.
Connection establishes fine but it lack audio completely. Codeс is G.729. RTP streams run fine in both sides, back and forth. I looked at logs but can't figure out anything from them. What could be the problem?

 

[Max]

Please check your firewall. Although you see traffic going in both sides, tcpdump only shows traffic received by the network card. Then it could be blocked by a firewall.

 

[Muhammad]

I did check the firewall. Connect to the server is ok. Yet I still don't hear anything.

 

[Max]

What is the browser version?

 

[Muhammad]

Oh, thanks! That was it - old FF. I updated it and there's sound now. Thank you.