In principle, nothing other than getting your PBX administrator to enter the IP-address of our closest located Cloud-based Oculeus®-Protect service. Once this is done, the service will ask on the first call for an activation code which you receive during service ordering process.
The service works based on the SIP protocol. This is the standard protocol used for managing IP-based voice communications. Modern PBXs, switches and communication networks use this protocol.