INFORMING SYSTEM FOR CALLING SUBSCRIBER TELEPHONE NUMBER

摘要

PURPOSE:To enhance the telephone number informing serivce by providing the service control network connecting to the telephone exchange network and informing audibly the calling subscriber telephone number incoming while the subscriber is aways at an optional time the subscriber designates. CONSTITUTION:In telephone exchange network 100, telephone A calls telephone B from outgoing trunk 103 of originating station 100A through incoming trunk 113 of receiving station 100B. In case the incoming is received while the subscriber of telephone B is away, the calling subscriber number is informed audibly at an optional time the subscriber designates between outgoing trunk 102 of station 100A and register sender 112 of station 100B via service control network 200 containing service control exchange 200A. In such way, the telephone number can be informed even when the subscriber of telephone B is away, enhancing the telephone number informing service.