| 摘要 |
PURPOSE:To attain simultaneous multiple address communication from a master set by providing a main slave set decision means and a 1st communication establishment means to a master set and providing a 2nd communication establishment means to a slave set. CONSTITUTION:A main slave set decision means of a master set 1 decides a main slave set for radio communication among plural slave sets 3-5, a 1st communication establishment means controls a 1st transmission section and a 2nd reception section to establish the communication with the main slave set decided by the main slave set decision means. Furthermore, a 2nd communication establishment means of each of the slave sets 3-5 controls a 2nd transmission section and a 2nd reception section to establish the communication with the master set 1 when the slave set of the 2nd communication establishment means is decided to be the main slave set by the master set 1 and to control a reception section thereby receiving communication between the master set 1 and other slave set decided to be the main slave set when the slave set of the 2nd communication establishment means is not decided to be the main slave set by the master set 1. Thus, the master set 1 controls two slave sets or over (3-5) and allows the slave sets to intercept the signal from the master set 1 and to be set in the simultaneous call reception state.
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