My Public IP is changed but mobile apps not working

[Bilalikram]

Hi ,
My Public ip is changed it was dynamic, i wait for 4 hours but 3cx soft phone mobile app not working.
i restarted 3cx machine but still not working. when i ping my FDQN is resolving to the new ip and i can ping FDQN. but soft phone still not working ( Connecting.....)

Please advise

 

[ChrisC_3CX]

Is this issue only affecting a specific device or all mobile apps including android and ios devices?

It may be that the DNS serving the network the specific device is connected to still knows the old IP.

First, I'd suggest trying to connect the device to a different network or LTE connection. Does it work when you do that?

Also, I do have to mention that we always recommend the use of a static IP for 3CX when in a production environment to avoid issues such as this one.

 

[Bilalikram]

Hi , the issue is with everyone for all the devices. Yeah seems DNS issue.
Pls advise how to resolve it to correct dns

 

[Alphabetic]

The permanent solution is to get a static WAN address.

 

[ChrisC_3CX]

Depending on the situation, there might actually not be anything to do but wait. Do bear in mind that a 3CX Standard and Pro License have a DNS TTL of 6 hours but an Enterprise License has a DNS TTL of 5 minutes. Depending on the license you're using you may have to wait longer.

What you can do in the meantime is is maybe set your network's DNS to use Google's DNS to maybe help speed up the process instead of having to wait for the DNS to propagate to your ISP. This of course provided that all affected devices are under the same network.

There are websites that can do a quick global DNS propagation test which might give you an idea on the progress.

 

[Bilalikram]

Thank you I will wait for DNS propagation

 

[Bilalikram]

Hi ,
It's 24 hours my soft phones are still saying connecting... not working. We all works on mobile phones app.
When I ping FDQqN it addresses to the correct IP address as in 3cx portal.
Please advise
It was just change in public IP that's it

 

[NickD_3CX]

Hi!

Although this step should not be needed, but on one of the mobile devices, try deleting the account, then from the 3CX Management Console send a new Welcome Email (or scan the QR code again) and reprovision the app.