Caller identification interface using line reversal detection

Details Caller identification interface using line reversal detection Caller identification interface using line reversal detection

1996-10-15

1999-05-18

Wolinsky, Scott

Telephonic communications

Supervisory or control line signaling

Using line or loop condition detection

379142, H04M1/57

Patent

active

059057947

ABSTRACT:
An interface for modems is described which provides rapid identification of a caller and limited access based on a variety of parameters obtained from caller identification information encoded by the telephone company. A line reversal detector is incorporated to signal when the caller identification information is available for reception. A two stage detection system is used to eliminate false signaling of line reversals and discriminate line reversals from ringing and other noise signals.

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