SERVICE INCOMING CONNECTION SYSTEM

摘要

PURPOSE:To decrease the number of trunk circuits and to simplify the constitution of a service incoming connection system, by providing a function to send identifying information to a preceding exchange via a signal circuit when an incoming call to a subscriber exchange is detected. CONSTITUTION:When an incoming trunk 10 has an incoming call to a subscriber exchange 1, this call is given to an incoming trunk 3 to start a connection marker 5. When it is decided that an incoming subscriber is equal to a registered subscriber for the substitute answer service or the transfer service, the connection control to the subscriber for restoration is omitted. While a monitor device 6 extracts the incoming trunk identifying information and the incoming subscriber number for the marker 5 and sends them to a signal device 7 via a signal circuit 30. A trunk exchange 2 receives the information through the device 7 and catches an outgoing trunk 9 and connects the trunk 10 to an answer trunk 12 when a call is equal to the call received by the trunk 10. Thus the substitute service and the transfer service are carried out through the answer trunk 2 and an outgoing trunk 11 respectively.