This is the innovaphone PBX WSDL file version 500 (as returned in VersionResponse) Queries the PBX for various version information Returns various version information defines the supported innovaphone PBX WSDL file version, function return value e.g. in C# the PBX's gatekeeper ID the PBX's location name the PBX's platform firmware version (e.g. "V5.00 hotfix IP400[03-5315]") the PBX's platform serial number (e.g. "00-90-33-00-00-2d") Queries various version information from the PBX