Patent ID: 7627308

Claim:
A communication system, comprising: a wide area communication network; a local area communication network; a mobile communication device, comprising a wide area communication module for communicating with said wide area communication network and a local area communication module for communicating with said local area communication network, said wide area communication module and said local area communication module being selectively enabled; and a server, having a database including a plurality of data groups and at least one response function, said mobile communication device sending a signal to said server when said local area communication module is enabled; wherein when said server receives an incoming call through said wide area communication network asking for communication with said mobile communication device, said server compares a data of said incoming call with said plurality of data groups and then performs said at least one response function according to the result of comparison, wherein said at least one response function includes asking a caller corresponding to said incoming call to leave a message as said data does not belong to one of said plurality of data groups.