| 摘要 |
PURPOSE:To control radio communication between plural base stations and mobile stations and to enable the communication between a mobile station and an extension telephone set by providing LAN control parts and line control parts for the base stations, connecting the base stations by means of a private line and connecting them with a telephone line. CONSTITUTION:The LAN control part 106 is provided for the base station 100 and inter base station is connected by a private line and position information on the mobile stations 110 and 111 in the radio teritory of the base station 100 can be exchanged between the base stations 100. When the mobile stations 100 and 111 do not exist in the teritory of the base station 100, the mobile stations 110 and 111 can simultaneously be searched by broadcasting to the other base stations and therefore search can be executed for the mobile stations 110 and 111 faster than using the existing telephone line 109, and the telephone line 109 can effectively be used. Since the system is connected with the telephone line 109, communication with another telephone set is realized. Thus, the radio- control of plural base stations and the mobile stations, and communication between the mobile stations and an extension telephone set are realized. |
