No audio from 3CX

[Psevdokounian]

Hello. A have a problem with audio. When i'm calling from external number, i hear audio form external but when i'm speaking no audio.



Please, help me)

 

[leejor]

First of all, through this, about providing information about your system.

https://www.3cx.com/community/threads/information-to-provide-when-requesting-help.67558/

Is this a new install, that has never worked properly, or, did this just start, on a system that was working properly before? If the latter, were any recent changes, upgrades made to anything?

Do you use any sort of firewall?

 

[Psevdokounian]

3CX Version: 16.0.611
Server OS: Windows Server 2016
Is the 3CX Server Hosted and where: Hosted on my ESXI Server
IP Phone Make/Model/Firmware: SNR VP-52/VP-56/VP-80
Provisioning Method: Local / VPN / STUN / SBC: Local
Trunk Provider or Gateway Make/Model: UzTelecom
Has the Firewall Checker passed: No (Because in providers closed network)
Are custom Phone Templates being used: NO

No firewall used, connecting through providers switch. I have 2 ethernet adapters now. Early i used 3CX with 1 adapter and telephony worked over the Internet. Now i added 2nd adapter, added new route and deleted from 1 adapter DNS and gateway. Now i have internet on 1st adapter and normally working 2nd adapter with telephony. But... I hear soud from external call, but when i speaking no sound.

 

[leejor]

Have a read through this...

https://www.3cx.com/blog/docs/network-configurations-supported-3cx-phone-system/

I have to assume that the second NIC is not configured correctly.

 

[Psevdokounian]

My route is configured like in your link. Same problem.

 

[leejor]

I'm guessing, that , for whatever reason (a 3CX setting), 3CX is sending the audio packets, externally, on the wrong NIC. Since it was working correctly, in the past, when you were using a single NIC, what prompted you to make use of a second?

 

[Psevdokounian]

Yeah... Now we found solution. Thanx in advice.

Problem solved with right routing table, this is my mistake, i have not propetly configured a routing(My low skils in networks). Now i configured a metrics and routes to interfaces. it worked propetly)))

 

[Psevdokounian]

Ok, now my 2nd office can't connect to 3CX. Ping are working, but no connection with 3CX.

 

[leejor]

Try running the 3CX Firewall Checker, and see if the ports all pass. I have to assume that this is something to do with the changes you've made, causing this to now happen.

 

[Psevdokounian]

I think problem is in the routing. Because i recive audio but, can't send. 3CX is sending the audio packets, externally, on the wrong NIC. Yes, do this like here: https://www.3cx.com/blog/docs/network-configurations-supported-3cx-phone-system/ and no result.