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US 7,254,230 B2Granted
Subscriber line interface circuitry
AssigneeSilicon Laboratories Inc.
InventorsJerrell P. Hein, Navdeep S. Sooch
Life of this patent
Estimating the term…
Abstract
A subscriber line interface circuit apparatus includes a signal processor having sense inputs for sensed tip and ring signals of a subscriber loop. The signal processor generates linefeed driver control signals in response to the sensed signals. A linefeed driver provides the sensed tip and ring signals. The linefeed driver drives the subscriber loop in accordance with the linefeed driver control signals.
Claims17
A subscriber loop interface circuit apparatus comprising:
- a signal processor having distinct sense inputs for each of a sensed tip signal and a sensed ring signal of a subscriber loop, wherein the signal processor generates a linefeed driver control signal in response to the sensed signals;
- and
- a codec for bi-directional communication of voiceband data between the analog subscriber loop and a digital interface of the signal processor, wherein the signal processor and the codec reside within a same integrated circuit package.
Dependencies are inferred from the claim text.