Voice dropped after switching to Unifi UXG-PRO

[Netadmin]

Hi,

Thanks for any insight in advance, has anyone ever had an issue after swapping out a gateway and suddenly the connection to remote branches looses audio.
When I mean remote I mean offshore the same-country connection seems to be working fine however offshore connections dropped audio. The issue happened when we switched out the gateway to Unifi's XG-Pro and while we maintained the same configurations the issue persists. Rebooting the gateway helps mediate the issue temporarily (1 or 2 days) then it returns. The gateway connection is over PPPOE and we do get a new external IP but Im not sure if that is what solved the problem.
Again thanks for any help I really need a direction to continue my investigation.

We also disabled SIP ALG

 

[bitn2]

What does the firewallcheck say? Portforwarding correct?

 

[Netadmin]

Thanks for your reply. screenshot for firewall check. We are using Unifi's XG-Pro.

 

[bitn2]

Thats your Problem, you need to fix your firewall. What portforwarding did you configured?

 

[Netadmin]

Port forward done for below ports. Sip ALG is disabled in our unifi controller. But Firewall check its failed.
How can i fix this.

5000
5001
5060
5061
5090
9000-10999

 

[bitn2]

Did you reboot the system after changing sip alg and ports? Try to reboot Unifi and 3cx and check again.

 

[Netadmin]

Yes rebooted many times. If we rebooted it will work one or two day. Issue appear again.

 

[Alphabetic]

You might want to take this up with the UI community

https://community.ui.com/questions/...Not-Work/143e2e61-80cb-44d6-9846-c84cf9520eb2