Hi Nahassamad,
Sorry to inform you this...Cisco IP Communicator is supported only on Windows XP, Vista and Windows 7
Cisco IP Communicator supports x86-based processors running a 32-bit OS; 64-bit OSs are only supported on Windows 7 (64-bit). This integration runs as a 32-bit appllication in 64-bit versions of Windows 7.
But still you can use the 3rd party softphones for Mac and Linux operating systems.
HTH.
Kulasekara Raja. K