Voice over data modem with selectable voice compression
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United States of America Patent
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Apr 1, 1997
Issued Date -
N/A
app pub date -
Jul 7, 1994
filing date -
Jan 8, 1993
priority date (Note) -
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Abstract
A personal communications system enables the operator to simultaneously transmit voice and data communication to a remote site. The personal communications system is equipped with two telephone line interfaces to allow connection between two remote sites. The connection between the first remote site and the local site may operate in a voice over data communications mode to simultaneously send compressed voice and data. A digital transmission protocol which is consistent with current packet standards is used to create an independent channel through use of a modified supervisory packet for negotiating communication parameters, including the speech compression algorithm, the speech compression ratio, the communication multiplex scheme, and other operations needed for control of remote hardware interfaces.
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