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Gateway device, network system, communication program, and communication method

  • US 20060133392A1
  • Filed: 11/14/2005
  • Published: 06/22/2006
  • Est. Priority Date: 11/24/2004
  • Status: Active Grant
First Claim
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1. A gateway device which connects a first network and at least one second network and performs communication based on a call control protocol with a terminal device on the first network, comprising:

  • a connection detecting unit which detects appliances on the second network;

    an identification information generator which generates identification information for identifying by the call control protocol each of the detected appliances;

    a classification unit which classifies the generated identification information according to at least either a type of a control protocol with which the detected appliances on the second network comply or a type of the second network to which the detected appliances belong;

    a storage unit which storages the classified identification information;

    an information publishing unit which, upon receipt of an information subscription request according to the call control protocol from the terminal device on the first network, publishes for the terminal device on the first network a list of the identification information classified according to the at least either the type of the control protocol or the type of the second network;

    a call connection unit which, upon receipt of a request for call connection with identification information on the published list according to the call control protocol from the terminal device on the first network, establishes call connection with the terminal device having made the request for call connection; and

    a mediation unit which mediates communication between the terminal device having made the request for call connection and an appliance on the second network assigned the identification information serving as a target of the request for call connection.

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