Method and apparatus for non-disruptive telecommunication...

Details Method and apparatus for non-disruptive telecommunication... Method and apparatus for non-disruptive telecommunication...

2006-09-26

2006-09-26

Tran, Sinh (Department: 2615)

Telephonic communications

Supervisory or control line signaling

Using line or loop condition detection

C379S165000

Reexamination Certificate

active

07113587

ABSTRACT:
The invention provides a low cost, simple, circuit for detecting the condition of a telephone line.

REFERENCES:
patent: 5255094 (1993-10-01), Yong et al.
patent: 5646558 (1997-07-01), Jamshidi
patent: 6160885 (2000-12-01), Scott et al.
patent: 6567520 (2003-05-01), Murphy et al.
patent: 6819710 (2004-11-01), Dupuis

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