Smart ringer

Details Smart ringer Smart ringer

2006-01-31

2006-01-31

Matar, Ahmad F. (Department: 2642)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S567000

Reexamination Certificate

active

06993349

ABSTRACT:
A telephone monitors ambient noise, and alters the characteristics of the audible ring to distinguish the sound of the ringing telephone from the ambient noise. Such characteristics include the decibel level, the sound frequency, and the rhythmic pattern or the ringing sound.

REFERENCES:
patent: 6408187 (2002-06-01), Merriam
patent: 6436278 (2002-08-01), Benazzi et al.
patent: 6574471 (2003-06-01), Rydbeck

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