Hi, I have an OfficeServ 7100 system with several SMT-i5210 IP phones (on local and remote networks). Until recently we were using the system with ISDN lines. We no longer have the requirement to make external (outside the company) phone calls and just use it to make internal calls between colleagues. Since disconnecting the ISDN lines we have found that remote handsets no longer work and are stuck in the "Connecting Server" state, my assumption was that the system would still work without these lines connected...

I've confirmed on a remote phone that it has the correct server IP address and is been assigned a dynamic IP on the network. Is there something additional that needs to be configured to get the remote handsets operational again?

System is running v4.53 and IP phones are on v1.11 if that makes any difference

Thanks in advance, AJ