Method and apparatus for a start-up procedure for digital and analog modems utilizing pulse code modulation for data transmission
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United States of America Patent
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Jul 15, 2003
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N/A
app pub date -
Sep 3, 1999
filing date -
Sep 3, 1999
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Abstract
In order to achieve reliable and efficient communication over public switched telephone networks (PSTN), voice-band modems utilize sophisticated start-up procedures. This invention involves a start-up procedure that allows an analog modem and a digital modem to establish a dial-up connection that utilizes PCM modulation in both upstream and downstream directions for data transmission.
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