System and method for interface between a subscriber modem and subscriber premises interfaces
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United States of America Patent
Stats
-
May 13, 2003
Grant Date -
Jul 11, 2002
app pub date -
Apr 20, 2001
filing date -
Nov 15, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
There is disclosed an apparatus for interconnecting a plurality of communications mediums, including voice frequency and broadband frequency to a subscriber communications system at the subscriber's premises. The apparatus comprises: 1) a controller for coupling and de-coupling communications mediums comprising at least one public service telephone network (PSTN) line and at least one non-public service telephone network (non-PSTN) line, to a communication system within the subscriber's premises; 2) lightning protection for controller interfaces; 3) a detector circuit for detecting power loss in the non-public service telephone network connection and 4) fail-over (re-connecting to an alternate circuit) devices connected to a public service telephone network line; and 5) a test circuit for monitoring the condition of a backup power supply for the apparatus.
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