Patent ID: 8521203

Claim:
A communication system for dispatch service, which comprises at least a dispatch center and a plurality of mobile devices; of which: the dispatch center is equipped with at least a terminal, which is linked to a transmitter and a receiver via a host computer, and used to send a message to the mobile devices of all members, or receive a message from any mobile device, such that the dispatch center is configured to communicate with the members with the mobile devices, monitoring and managing the dispatching jobs; each of the mobile devices is selected from either a text/voice pager or two-way radio and is carried separately by a member; the each of mobile device at least comprises a processing control module, a radio frequency (RF) receiving module, a display unit, an input module and a network communication module; a) the processing control module, configured to control various components; the processing control module at least comprises quick reply function, double frequency scanning function and channel scanning function; b) the RF receiving module, in a normal open state, is firstly set on a first channel to receive calling signals from the dispatch center, and is set to select a second channel to receive the calling signals from a place of event, then input into the processing control module for interpretation; c) the display unit used to display an audible or visible message interpreted by the processing control module on the mobile device; d) the input module comprising at least a defined reset key, operating key and scanning key, which are separately used to execute the quick reply function or double frequency scanning function, or channel scanning function; e) the network communication module selected at least from either a 2-Way Radio or Global System for Mobile Communications (GSM) network in a normal close state, and activated by signals executing the quick reply function or double frequency scanning function, for sending out the message from the processing control module.