Solved All Yealink Phones No Longer Connecting to GCE Hosted 3CX

[Brett Coleman]

Overnight all of our 40+ desk phones stopped working. We have mostly a mixture of T32G and T48G.

All of them connect using a SBC running on a Windows server. I have rebooted the server and also restarted all services on the 3CX managment console. Everything is green and running.

I am concurrently checking to see if the WAN/Firewall group has made any changes.

What other things should I be checking?

Thanks in advance.

 

[StefanW]

is the IP the same as before? Do you static IPs in google? Can you access the 3CX MMC?

 

[Brett Coleman]

Yes to static IP and full access to the MMC. I can see that phone and pc clients are connected.

 

[YiannisH_3CX]

Check the IP blacklist of the PBX located on the dashboard in case your remote locations IP is blacklisted.

 

[Brett Coleman]

Check the IP blacklist of the PBX located on the dashboard in case your remote locations IP is blacklisted.

Looks like a firewall issue. Phones are all back online.

 

[YiannisH_3CX]

Glad to hear the issue is resolved