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xAP is an open protocol used for home automation which supports integration of telemetry and control devices primarily within the home. [1] Common communications networks include RS-232, RS-485, Ethernet and wireless. The xAP protocol exclusively uses broadcast messages. [1] xAP receivers listen to all broadcast messages and read the message header to verify whether the message is of its interest. [1] The xAP protocol has the following key advantages: [1]
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- It makes use of existing infrastructure wherever possible (for example it can co-exist with various physical layers like RS-232 or wireless LAN)
- It can intercommunicate between multiple networks like RS-232 or wireless by just deploying a physical bridge.
- xAP does not require any central controller. All nodes can act as sender or receiver.
- xAP system provides distributed and fault tolerant architecture which allows continuous operation of systems even in the event of component failures.
