Route all 3CX traffic to specific WAN

[CBUTLER]

I currently have 3CX on a server behind multiple WAN connections (Sophos XG). If I force all connections from that server to WAN2, 3CX works fine. It I try to forward only specific traffic then 3CX has no audio and cannot connect calls. I used the following ports: TCP/UDP 5001, 5060, 5090, 9000-9500, 7000-7500.

Is there anything else I'm missing that needs to be forwarded. I don't see anything else listed in the 3CX documentation but apparently something isn't being forwarded which is causing the audio to go through WAN1 instead of WAN2.

 

[eddv123]

See this guide here (multiple internet Gateways):
https://www.3cx.com/blog/docs/network-configurations-supported-3cx-phone-system/

You may need to enable "PBX delivers audio" on the extensions you are using as well.

 

[Saqqara]

Here is the list of ports - https://www.3cx.com/ports-used-3cx-phone-system-v14-v15/

Not sure where you got ports 7000-7500.

What happens if you run the firewall test, after forcing traffic down Wan2.

 

[AGidi]

Just a quick idea.
I understand the SBC uses just one port?
Maybe you can install an SBC in the lan, point extensions there, then route with a simpler rule traffic from the SBC via one WAN?

hope it helps