 As of 9 December 2008 Clipsal opened its C-Bus protocols to anyone who wants to interact with it programatically.Using one of Clipsal's C-Bus interface modules (PCI for RS232 or USB and CNI for Ethernet TCP/IP), you can interact with other home automation systems, or with applications on devices like Android, iPad or iPhone.The C-Bus protocol was developed using the OSI 7 layer reference model.