In ISDN the third party automatic calling system and the third party automatic calling method

摘要

PURPOSE:To request start of a communication call to a terminal equipment having no communication protocol automatically from other terminal equipment,that is, a third party by providing a function section receiving a 3rd party automatic call start request on a terminal adaptor and a private branch of exchange as a subscriber's equipment of an ISDN. CONSTITUTION:When a 3rd party automatic call start request requesting data communication sent/received from a console 7 to data terminal equipments 1-2 is inputted to a terminal adaptor 5, the terminal adaptor 5 uses a call start request circuit 18 to receive a 3rd party automatic call start request through a console control function 16. The circuit 18 superimposes control information of a 3rd party automatic call start request onto a packet call through a D channel and sends the result with a designated, terminal adaptor 3. The adaptor 3 receives a call start request packet call at its start call reception function 13. When the function 13 confirms this packet call to be a 3rd party automatic call start request to its own terminal equipment 1, the function 13 composes a reply packet representing the accept of the connection request and an outgoing/incoming circuit 11 returns the packet to adaptor 5 through a D-channel. Moreover, the outgoing/ incoming circuit 11 starts a call automatically toward the called party terminal adaptor 4.