Device driver for rate adaptable modem with forward compatible and expandable functionality
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United States of America Patent
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-
Jun 4, 2002
Grant Date -
N/A
app pub date -
Jun 30, 1997
filing date -
Jun 30, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A device or interface driver is provided for permitting an operating system to utilize, configure and control a software modem having forward compatible and expandable functionality. In a preferred embodiment, the operating system is a Windows based system running on a host processing system such as a personal computer, and the modem is compatible with standards promulgated for ADSL. Conventional voice band modem control commands are also supported, so that the present invention for ADSL based modems is nevertheless compatible with existing modem applications programs. The new driver manages control information for configuring the bandwidth to be used in a data link established through a channel with an upstream transciever during an initialization process, and serves as a data pump for the software modem. The control information may be self-determined by a user of the host processing system 398, or alternatively, automatically sensed, configured and monitored by such processing system.
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