Lack of audio while using Flashphoner


New Member
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?
Last edited:


Staff member
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.