Originally the problem was that trying to enter access codes when joining into conference calls wouldn't work reliably. It would double a digit somewhere, and then it would cause great consternation ...

The Sangoma FreePBX Security Team is warning about an actively exploited FreePBX zero-day vulnerability that impacts systems with the Administrator Control Panel (ACP) is exposed to the internet.

The firewall has 5060 and 10000-20000 open to the SIP provider (voip.ms), and a static NAT to the FreePBX server but we are getting some set of calls with no audio on either end. Anyone have any ideas ...