Telephonic communications – Subscriber line or transmission line interface – Power supply
Reissue Patent
2011-02-08
2011-02-08
Jamal, Alexander (Department: 2614)
Telephonic communications
Subscriber line or transmission line interface
Power supply
C379S395010
Reissue Patent
active
RE042123
ABSTRACT:
A subscriber line interface circuit has a battery-powered, high voltage analog section, that drives tip and ring lines of a subscriber loop, and a mixed signal (low voltage and digital signal processing) section, that monitors and controls the high voltage analog section. An input signal receiving unit of the high voltage analog section conditions input voice and low voltage signaling and ringing signals from the mixed signal section, for application to a dual mode, programmable gain, tip/ring amplifier coupled to the loop. A sense amplifier at the output of the tip/ring amplifier is through an auxiliary amplifier to an analog feedback monitor port for closing a loop to synthesize the circuit's output impedance.
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Berrios Edward
Enriquez Leonel Ernesto
Youngblood Douglas Lawton
Fogg & Powers LLC
Intersil America's Inc.
Jamal Alexander
LandOfFree
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