Unbalanced slic with a built-in ring circuit

Details Unbalanced slic with a built-in ring circuit Unbalanced slic with a built-in ring circuit

2007-08-21

2007-08-21

Harold, Jefferey (Department: 2614)

Telephonic communications

Substation or terminal circuitry

Power control or detection circuit

C379S418000, C379S413010

Reexamination Certificate

active

10384302

ABSTRACT:
A method and apparatus is provided for implementing an unbalanced subscriber line interface circuit with built-in ring circuit. A signal to be conditioned is received. An unbalanced output buffering function is performed upon the signal to be conditioned using an unbalanced buffering circuit. Performing the unbalanced output buffering function includes switching between a plurality of power supplies to maintain a predetermined maximum voltage across a plurality of devices relating to the unbalanced buffering circuit.

REFERENCES:
patent: 5535273 (1996-07-01), Kausel et al.
patent: 6978014 (2005-12-01), Bentley

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