No Audio from caller dialing into Web Meeting but fine if dialing into Audio only meeting

[Brent Topine]

Set up a scheduled WebMeeting (default settings) and dialed in for voice both on x700 and externally using IP Phone on same system and mobile phone direct without the 3CX app.

Caller can hear, but cannot be heard. Microphone of the audio participant was not muted at either end.

When setting up an audio only conference all participants could be heard and speak without an issue.

Running Enterprise 16.0.1.273

Any assistance appreciated, I feel like I've missed a setting.

Thanks
Brent Topine

 

[LeonidasG_3CX]

You'll need to make sure that communication towards *.3cx.net domains is allowed by your firewall and also make sure the required RTP ports are properly opened https://www.3cx.com/docs/ports/