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Telecommunication system for automatic switching between voice and data communications

  • US 5,493,609 A
  • Filed: 07/07/1994
  • Issued: 02/20/1996
  • Est. Priority Date: 09/27/1990
  • Status: Expired due to Fees
First Claim
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1. A telecommunication system for providing voice and data communications between at least two stations over a telephone line that can be dynamically switched between a voice mode and any of a plurality of data modes, each of said stations comprising:

  • a telephone for voice communications;

    switching means for selectively connecting said telephone to said telephone line in said voice mode and disconnecting said telephone from said telephone line in said data modes;

    a modem for selectively providing data communications over said telephone line in any of a plurality of data modes;

    means for transmitting a start signal over said telephone line to request that remote stations switch to one of said data modes prior to transmission of data by said modem, said start signal including a mode signal indicating one of said data modes;

    means for detecting a start signal, including said mode signal, transmitted over said telephone line by a remote station; and

    a controller for monitoring said start signal detector and controlling said switching means and said modem to automatically switch from voice mode to a selected data mode when data is being received or transmitted.

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