We have collected the most relevant information on 3cx No Audio On Incoming Calls. Open the URLs, which are collected below, and you will find all the info you are interested in.
No Audio on calls in or out | 3CX Forums
https://www.3cx.com/community/threads/no-audio-on-calls-in-or-out.43840/#:~:text=For%20whatever%20reason%20it%20would%20appear%20that%20the,are%20installed%20on%20the%203CX%20system%20and%20try.
Solved - No audio & no incoming calls (3CX + Yealink ...
https://www.3cx.com/community/threads/no-audio-no-incoming-calls-3cx-yealink.80774/
Phones are successfully registered, have available status in 3CX, and are able to make outgoing calls (but still without audio). Before the problems appeared we haven't changed anything (only the 3CX server was probably updated - it is done automatically), but now we made sure that all systems/devices are up to date (IP Phones, network devices).
3CX external incoming calls no sound - VoIP Forum - Spiceworks
https://community.spiceworks.com/topic/2175148-3cx-external-incoming-calls-no-sound
The problem is there are no sounds when we pick up the phone. If we restart all 3CX services it will work again for a week or so. It only happens with external incoming calls, outgoing and internal calls are working fine. As a workaround currently we have to schedule to restart all 3CX services overnight, however I'd like to apply a permanent fix if possible.
No Audio on calls in or out | 3CX Forums
https://www.3cx.com/community/threads/no-audio-on-calls-in-or-out.43840/
For whatever reason it would appear that the RTP stream is not getting to 3CX which is generally a firewall issue. It could be that the router is doing some port translations ......... some TP-Link routers did this. You might also turn off the Windows or any 3rd party firewall that are installed on the 3CX system and try.
Solved - 3CX No Sound | 3CX Forums
https://www.3cx.com/community/threads/3cx-no-sound.49508/
Hi, I'm encountering the problem, of no audio/sound at telephone calls between two IP-Phones SNOM 720 connected over LAN. the 3CX Server is in the cloud. If i check "PCX transmits Audio", the audio is working, but as far is I know, checking this checkbox is not required and degrades quality...
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