Solved How should I reprovision phones to a new server with a different IP address?

[Stulander]

Hi,

I was unable to succesfully upgrade our self-hosted Debian 3CX v16 install to v18. So, I provisioned a new VM and restored a backup taken from the old install.

Our Snom D717 phones are registered to the local IP of the old v16 install, using the multicast PnP method:



The new server has a new IP address of .2.100.

What is the best way to reprovision the phones to the new server? There are not many phones (30), so I was considering logging into each one and changing the registrar and outbound proxy field to a FQDN defined in our on-prem DNS server. E.g. 3cx.company.local, which currently resolves to 192.168.2.9. Once done, I could simply update the DNS record to point to 192.168.2.100.

Is there a better way of doing this? How can I quickly move our phones from the old system to the new one?

1. Factory reset the phones after taking the old system offline? (Won't that require me to factory reset them one by one manually?)
2. Update the new server to have the IP address of the old system? (192.168.2.9)

Thanks

 

[Saqqara]

Update the new server with the old server address. Making sure the old server is switched off

 

[Stulander]

Update the new server with the old server address. Making sure the old server is switched off

OK, I read some posts that you shouldn't change the local IP a 3CX server, but I believe those were for older versions. I saw a post saying since v15 you can change the local IP address without issue - it will give you a warning on the dashboard.

 

[JohnS_3CX]

Update the new server with the old server address. Making sure the old server is switched off

Either this, or you need to factory reset and reprovision each phone.

 

[JohnS_3CX]

OK, I read some posts that you shouldn't change the local IP a 3CX server, but I believe those were for older versions. I saw a post saying since v15 you can change the local IP address without issue - it will give you a warning on the dashboard.

You will click the warning after you reboot the server, and it will update itself to take the new IP into consideration.

 

[Stulander]

You will click the warning after you reboot the server, and it will update itself to take the new IP into consideration.

Excellent, thank you.