| 摘要 |
PROBLEM TO BE SOLVED: To attain connecting plural lines simultaneously when a mobil station is in the area of any base station by connecting by means of ground system communication line from an exchange line back to the line controller of a branch station where the mobile station is at the time of calling the mobil station from the exchange. SOLUTION: Tandem switches 2-1 to 2-n, the line controllers 3-1 to 3-n and the line controller 6 are respectively connected by plural speech paths. When the line is connected from an extension telephone set 1-1 to the mobile station 5-n, a line connecting device 3-1 is dialled by way of the tandem switch 2-1 of a self station. The line controller 3-1 picks-up register base station data of the mobile station 5-n from the line controller 6 of a control station and outputs a dial to the tandem switch 2-1. The tandem switch 2-1 receives it so as to execute connection to the line controller 3-n where the mobil station 5-n exists by the ground system communication line so that the mobile station 5-n is connected to the extension telephone set 1-1. Another telephone can be simultaneously connected except the same base station. |
