| 摘要 |
PURPOSE:To always recognize and manage the position where a radio telephone set exists in a zone by updating position information already stored in identification information of a stationary equipment and a radio telephone set based on an incoming call replying signal from the stationary equipment. CONSTITUTION:A master equipment 1 sends an incoming signal to a stationary equipment 2-1 after the detection of an incoming call of an extension in the system to the radio telephone set 3-1 and the stationary equipment 2-1 sends an incoming signal to a radio telephone set 3-1 via a radio channel. The radio telephone set 3-1 sends an incoming signal including its own identification information to the stationary equipment 2-1 and the stationary equipment 2-1 transmits an incoming call replaying signal including its own identification information and the identification information of the radio telephone set 3-1 to the master equipment 1. The master equipment 1 updates the position information stored already as to the information of the stationary equipment 2-1 and the radio telephone set 3-1 based on the incoming call replying signal from the stationary equipment 2-1. |
