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DTMF tone passer in a voice communication system

  • US 5,666,357 A
  • Filed: 12/04/1996
  • Issued: 09/09/1997
  • Est. Priority Date: 03/23/1995
  • Status: Expired due to Term
First Claim
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1. An apparatus for sending and receiving digital signals in a voice communication system comprising:

  • a data buffer for receiving and storing a digitized signal from a single subscriber including voice band tone data and speech data;

    a tone detector for detecting said voice band tone data and generating at least one tone packet containing data indicative of said voice band tone data;

    a speech encoder for encoding said speech data into a plurality of compressed speech packets; and

    a transmitting unit in communication with said tone detector and said speech encoder for transmitting a packet message including said tone packets and said speech packets over an RF channel, said tone packets being interleaved with at least one of said speech packets.

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