| 摘要 |
PROBLEM TO BE SOLVED: To provide the communication equipment that makes communication only to a specific group. SOLUTION: An identification code (1) (2)...(6) is assigned to each slave set, and the 1st slave set 51, the 2nd slave set 52 and the 3rd slave set 53 have a group identification code (a), and similarly the 4th slave set 54, the 5th slave set 55 and the 6th slave set 56 have a group identification code (b). In the case that the 1st slave set 51 selects the identification code (2), since the identification code (2) is an identification code possessed by the 2nd slave set 52, a communication channel is set up for only the 2nd slave set 52 and no communication channel is set up for the other slave sets. In the case of selecting the identification code (b), since the identification code (b) is possessed by the 4th slave set 54, the 5th slave set 55 and the 6th slave set 56 only, a communication channel is set up for the three slave sets and they are simultaneously called. |
