| 摘要 |
PURPOSE:To inform the arrival of a call to the user by a radio calling receiver even when calling to a mobile terminal equipment is disable due to power interruption or the like by informing an unsuccessful calling state of a called party to a caller when a non-reply detection means of a mobile communication exchange detects non-reply of the mobile terminal equipment. CONSTITUTION:When a setup request signal (a) from a caller 5 to a called mobile terminal equipment MSS 31 reaches a mobile communication exchange 1, the exchange 1 transmits a call start signal (b) from the exchange 1 corresponding to a current call reception area of the MSS 31 via a base station BS 2 and starts a non-reply detection section 121 in a central controller CC 12. A detection section 121 starts a built-in timer, measures the elapsed time after transmission of the signal (b) and detects it that a prescribed time elapses while the MSS 31 does not reply, then the section 121 sends a call stop signal via the BS 2, starts a registration confirmation section 122, references a radio calling registration table 131 to retrieve a telephone number of the MSS 31, transfers a radio calling request signal including a DN to a radio calling transmission installation 4 and allows a transmitter 15 to inform an unsuccessful calling to the caller. |
