| 摘要 |
PURPOSE:To attain the incoming call processing from a general subscriber telephone network subscriber to a mobile station subscriber even at the most frequent time by sequencing the priority of an incoming call from the general subscriber telephone network to an extension in order of a speech extension and then a connection processing extension. CONSTITUTION:Since there is no idle extension in a speech extensions 51, a main control section 6 registers a connection processing extension number to the end of a reservation queue part 61 in the reception state with respect to a call signal coming to the connection processing extension 52 and increases the processing priority every time the head is processed. When the signal reaches the head of the reservation queue part 61 and an idle speech extension 51 is found out, a closing command and an extension designation pickup command are sent to a speech channel unit 71 to be connected to the idle speech extension 51. Then the speech channel unit 71 closes a DC loop and a call signal from the general subscriber telephone network is replied by the extension designation pickup. Thus, the incoming call processing from the general subscriber telephone network subscriber to the mobile station subscriber is applied even at the most frequent time. |
