Hi All Was wondering if someone could throw some light onto this for me? I have the latest 3cx server installed on Windows Server 2008. I have the latest 3cx voip client installed onto a workstation. If i dial a number on the phone, the call works fine, but the voip client doesn't update my status. Likewise, if i enter a number into the voip client and press enter i think my phone should ring - right? What i get is an error on the screen saying : TCX.PBXAPI.OperationFailed These is some other text below this, but i can't scroll down or make the window larger to see it. I thought it might be a firewall problem, however i have disabled the firewall on both server and client. Any help would be much appreciated! Cheers Richard.