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Communication interface to data networks

  • US 6,144,724 A
  • Filed: 05/15/1998
  • Issued: 11/07/2000
  • Est. Priority Date: 05/15/1998
  • Status: Expired due to Fees
First Claim
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1. Apparatus for transmitting data and voice signals between a digital network and a public switched telephone network (PSTN) comprising:

  • a telephone connected to the PSTN by a PBX; and

    a network interface microcontroller in the telephone for connecting the telephone to the digital network, for converting signals from the digital network into a form suitable for transmission through the PBX to the PSTN, and for converting signals received from the PSTN through the PBX into a form suitable for transmission to the digital network.

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