Solved Internal extension dialing does not work..no audio

[rsatar]

Hi everyone,

I have 6 Yealink T27G set up with their extensions on my cloud hosted 3CX V 15.5.15502.6. The inbound and outbound dialing works and there is 2 way audio. I also set up paging that pages all the extensions at the same time, that works too but my problem is the internal extension calls between the extensions. the phones ring but there is no audio at all.

My SIP provider is Voip.ms.

Can anyone help me with this or if there is a setting that i have to change?

 

[rsatar]

I managed to fix the issue....For some reason, in the extension settings, under options then troubleshooting, i had to check mark the "PBX Delivers Audio" for them to work.

I thought that only under the SIP trunk settings, then options then advanced, i had to check mark the "PBX Delivers Audio" but i guess i have do both in the extension setting and SIP trunk setting.

 

[cobaltit]

So internal calls don't hit the trunk..... So yeah you'd need to select 'PBX delivers audio' for the extensions in that case. For the calls that traverse the trunk then that setting on the trunk will do the trick.

 

[YiannisH_3CX]

Glad to see the issue has been resolved and thank you for updating the thread with your solution. Indeed when you have remote phones registering to the PBX with STUN you need to enable the option PBX delivers Audio so extensions can talk between them.
https://www.3cx.com/3cxacademy/videos/intermediate/configuring-remote-extensions/