Digital added main line system with power-up and power-down features
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United States of America Patent
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May 6, 1997
Grant Date -
N/A
app pub date -
Nov 3, 1995
filing date -
Jul 25, 1989
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for powering a system for transmitting and receiving multiple telephone transmission signals over a single twisted pair. The method also powers down a portion of the system. An analog signal from a local switching station is converted to an 80 kbits/sec signal for transmission over a twisted pair. A remote terminal converts the 80 kbits/sec signal back into a conventional analog signal for use in conventional telephone, facsimile or other related equipment.
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