| 摘要 |
PURPOSE:To make provision of a PB receiver on a radio calling equipment unnecessary, without using a speech line in a public telephone network, by providing a common channel signal link between the radio calling equipment and the public telephone network. CONSTITUTION:When a transmission subscriber 1 dials a telephone number of a radio calling terminals 2, an exchange 10 identifies whether it is a general speech call or a radio calling call. In case of the radio calling call, the exchange 10 sends out a dial tone, etc., and the subscriber 1 executes further additional dialing. After having received each dial information, the exchange 10 sends the dial information to a radio calling equipment 30 through a common channel signal link (a), a common channel repeating installation 50, and a common channel signal link (d). The equipment 30 converts the telephone number to a terminal number, and transmits it. The terminal 2 receives these information, and executes the generation of a ring-back tone and a display of the contents of additional information. |
