Fault detection in broadband cable systems
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United States of America Patent
Stats
-
Jan 27, 1998
Grant Date -
N/A
app pub date -
Dec 27, 1995
filing date -
Dec 27, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A fault detection system for a broadband network having a central switch for switched telecommunications connections among subscribers each provided with subscriber interface equipment. The subscriber interface equipment has a received voice path and generates baseband signals for voice telephony which are carried at a carrier frequency on the broadband network. The fault detection system is provided with a tone generator for providing a constant, continuous pilot throughout the network. A pilot tone detector at the subscriber interface equipment detects the absence of pilot tone. The central switch is responsive to each pilot tone detection to recognize the absence of pilot tone at the corresponding subscriber location.
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