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Communications system for an ISDN and a LAN, and an ISDN-LAN connection terminal

  • US 5,400,335 A
  • Filed: 04/24/1992
  • Issued: 03/21/1995
  • Est. Priority Date: 04/25/1991
  • Status: Expired due to Term
First Claim
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1. A method for transmitting data from an ISDN terminal in an ISDN to a LAN terminal in a LAN, through an intermediate device, comprising the steps of:

  • establishing a connection between the ISDN terminal and the intermediate device;

    transmitting, by the ISDN terminal to the intermediate device after the connection has been established between the ISDN terminal and the intermediate terminal, first information containing address information of the intermediate device in a first field, and second information containing address information of the LAN terminal in a second field different from the first field;

    receiving, by the intermediate device, the first and second information transmitted by the ISDN terminal;

    transmitting by the intermediated device, information corresponding to the second information containing address information of the LAN terminal to the LAN terminal;

    transmitting third information, by the ISDN terminal, to the intermediate device;

    disconnecting the connection between the ISDN terminal and the intermediate device; and

    transmitting the third information from the intermediate device to the LAN terminal, after the connection between the ISDN terminal and the intermediate device has been disconnected.

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