| 摘要 |
PURPOSE:To prevent a control channel from being busy even with calls from slave equipments concentrated thereupon at once by providing a control channel between a master equipment and a slave equipment respectively corresponding to each slave equipment. CONSTITUTION:A master equipment 1 receives a call signal from a radio telephone set 2 via each control channel from an antenna 8 by a receiver 9 and a demodulated output is fed to a control section 11. The control section 11 checks sequentially at which order number of channel the control channel obtained by the demodulation output is and when the channel number is made clear, whether as ID as an identification data is an odd number or an even number is checked to locate the radio telephone set 2. The control section 11, after the radio telephone set 2 is located, sets a transmitter 6 to designate an idle communication channel to start the communication with the radio telephone set 2. |
