We have installed FreePBX 13.0.194.2 version. We configured IVR. We setup voice mail on o(zero) digit press action.After click on zero call landed on voice mail prompt as well. But after 30 seconds calls automatically disconnected.
Check your logs. Could be network/firewall related. Could be endpoint related. I typed â30 Secondsâ in the forum search and returned a lot of starting points you could look into.