JPS6469147A - Connecting system for centralized maintenance operation center - Google Patents

Abstract

PURPOSE:To transmit and receive information concerning the centralized maintenance even at the time of the trouble of a private line by providing a connecting means to connect the path by using a general telephone network and a confirming means to execute the safety confirmation of the connection condition besides the private line. CONSTITUTION:When some trouble occurs at a private line 8 and a centralized maintenance operation center 3 and an exchange 1 cannot be communicated, the telephone number of a maintenance operation subscriber circuit 8 is inputted from a centralized maintenance operation terminal 16, a telephone calling processing is executed from a centralized maintenance operation device 15 and a general telephone network interface 17 to a general telephone network 4 and received through an exchanging switch 5 and the maintenance operation subscriber circuit 8 to a maintenance operation subscriber circuit interface 9. After the interface 9 automatically responds to the receiving, the exchange of an identification code, password, etc., is executed at the section of the general telephone network interface 17, and thus, the safety confirmation of the connection condition is executed and a logical path is connected to a maintenance operation interface 7. Thus, similar to the time when the private line 18 is used, the information can be transmitted and received.