Tut Systems, Inc.

John R Marum

Harold H Webber

Apparatus for delivering operating power from a data terminus to a utilization device includes a first data connection connecting the data terminus to a data repeater station and a second data connection connecting the data repeater station to the utilization device. A first power sourcing equipment delivers DC operating power to the data repeater station over a physical layer of the first data connection. A second power sourcing equipment at the repeater station receives operating power over the physical layer of the first data connection and delivers operating power over a physical layer of the second data connection to the utilization device.

Apparatus and method for remotely powering a data acquisition or utilization device

An apparatus and method for automatically selecting different data rates for communicating data over a high bit rate, digital signal line (HDSL) line such as a dry pair line. In one embodiment master/slave interface circuits at opposite ends of a line attempt to establish communications at a higher frequency. If this fails, communications are attempted at a lower frequency. If communications are successful at the higher frequency and communications continue for a predetermined period of time at the higher frequency and then communications fail, an attempt is made to reestablish communications at the higher frequency. An algorithm is set forth for enabling selecting among a plurality of different speeds.

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Oakland, CA, United States of America

John R Marum