Communication system, communication terminal and communication method
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United States of America Patent
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Jan 10, 2006
Grant Date -
Jul 10, 2003
app pub date -
Nov 19, 2002
filing date -
Nov 27, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
From an electric pole outside to a cordless handset inside a building/facility, a communication line is established via an electric power line. At this point, it is judged whether or not electric power line communication is possible, and if electric power line communication is possible, the communication line between the cordless handset and a base unit is switched to an electric power line communication system, and a communication line is formed via an optical fiber cable from the electric power line. By measuring the communication quality levels of all lines of the wireless and electric power lines, the communication line having the highest communication quality level may be selected.
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