Patent ID: 6172976
Filing Date: 2001-01-09
Classification: H04M,H04Q

Abstract:
An apparatus that performs connection processing between terminals, comprising:a first terminal that corresponds to a calling terminal;a second terminal that corresponds to a called terminal;a switching controller;a first subscriber circuit controller that provides connectivity between the first terminal and the switching controller, the first subscriber circuit controller configured to monitor an operation state of the first terminal;a second subscriber circuit controller that provides connectivity between the switching controller and the second terminal;a media control device communicatively connected to the switching controller; anda service control unit communicatively connected to the first and second subscriber circuit controllers, the media control device, and the switching controller,wherein the service control unit comprises:an apparatus control interface that provides an interface to said first and second subscriber circuit controllers, said media control device, and said switching controller;a first terminal controller configured to receive a service start request outputted from the first terminal, the service start request being detected by said first subscriber circuit controller and forwarded to said first terminal controller via said apparatus control interface;a terminal control memory that is communicatively connected to said first terminal controller, said first terminal controller storing information into said terminal control memory based on receiving the service start request;a service controller that is actuated by said first terminal controller based on the service start request corresponding to a particular request, said service controller controlling said first terminal controller to read a call incoming terminal address, and in response to said call incoming terminal address, said first terminal controller reads out the call incoming terminal address from the information stored into said terminal control memory;an address resolution controller that determines whether or not the call incoming terminal address is resolvable, wherein if the call incoming terminal address is not resolvable, call processing is terminated with respect to the service start request;a second terminal controller configured to send a request to connect to the second terminal, via the second subscriber circuit controller and the apparatus control interface, and when the call incoming terminal address is resolvable, an answer to the request being sent back to the second terminal controller from the second terminal by way of the second subscriber circuit controller, wherein when the answer to the request corresponds to a refusal to connect, the call processing is terminated with respect to the service start request,wherein, when the second terminal controller receives an acceptance by the second terminal to connect, the service controller informs the first terminal controller that the call processing is continuing and informs the second terminal controller to start ringing the second terminal.