| 摘要 |
PURPOSE:To execute a call without operating a button for press-to-talk between a radio terminal of a calling party and a radio terminal of a called party by executing an exchange connection, based on connection classification data of the registered called party. CONSTITUTION:In a subscriber data base part 10, subscriber data of each radio terminal 1-4, that is, connection classification data for showing a simplex connection or a duplex connection is registered. When the radio terminal 1 executes dial outgoing to the radio terminal 2, an exchange 8 retrieves the subscriber data of the radio terminal 2 from the subscriber data base part 10, based on its dial number, and for instance, recognizes a fact that it is data for showing a simplex connection, and also, sends out an incoming signal to the radio terminal 2 and brings it to incoming. Subsequently, when the radio terminal 2 responds to this incoming, the exchange 8 selects the simplex connection, based on the recognized data. In such a way, a call can be executed between the radio terminal of a calling party and the radio terminal of a called party without operating a button for press-to-talk. |
