PBX Issue

[Angellico]

I have ascom d62 IP phones registered with my 3cx software and all was working good until just recently.

Now all of a sudden when I turn on the phone, on the main screen of the phone it says... PBX out of service.

Now I cant seem to figure out the issue, so wondering if someone here can point me in the right direction that would be great.

Thanks

 

[craigreilly]

what version and SP on 3cx?

anything in the log files?

any change to Vlans, network infrastructure, etc?