IP Blacklisted

[Grin_creative]

Hi, our desk phones cannot connect to 3CX, we're on 4SC and they're just showing no service.

The app on mobiles will only work on 5G not Wifi and says our IP is blacklisted. This keeps happening, can anyone help? We don't have access to the backend to change the blacklist situation. Thanks a lot.

 

[bitn2]

Where is the pbx hosted? How are the desk phones connected to the pbx? Why you dont have access to your pbx?

 

[Grin_creative]

It's all cloud based, the previous IT company who set up no longer exist as a business. We have the free option, which is why I think I can't access much.

 

[bitn2]

It's all cloud based, the previous IT company who set up no longer exist as a business. We have the free option, which is why I think I can't access much.

If you dont have any access to your pbx, than you cant do anything.

You didnt had admin access before? How are the phones connected to the pbx? If you have the free one hosted by 3cx, you cant use desk phones with it anymore.

 

[Grin_creative]

Ah that makes sense then. However the IP is still blacklisted when using wifi with the app on mobile phones.

 

[SteveITS]

If the desk phones are on the same public IP as your wireless then an IP block would affect both.

Try connecting from another public IP to allow this public IP.

You could also disconnect devices/apps and connect one at a time to see what triggers the block. But it takes time for the block to expire.