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Facsimile store and forward system with local interface

  • US 5,559,611 A
  • Filed: 12/05/1995
  • Issued: 09/24/1996
  • Est. Priority Date: 10/07/1993
  • Status: Expired due to Term
First Claim
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1. A method of interfacing between a local facsimile machine and a public switched telephone network, said method comprising the steps of:

  • coupling an interface device to a first telephone line connected to the local facsimile machine and a second telephone line connected to the public switched telephone network;

    receiving a destination telephone number of a remote facsimile machine over the first telephone line at the interface device in response to a user dialing a destination telephone number at the local facsimile machine;

    dialing the destination telephone number over the second telephone line from the interface device;

    connecting the first telephone line to the second telephone line at the interface device;

    monitoring the connected second telephone line at the interface device for call progress signals; and

    supplying battery from the interface device only to the first telephone line in response to an inability to establish communication with the destination facsimile machine.

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