CAS tone disguising method and apparatus

Details CAS tone disguising method and apparatus CAS tone disguising method and apparatus

1997-03-31

2000-08-08

Isen, Forester W.

Telephonic communications

Supervisory or control line signaling

Substation originated

379 9309, 379142, 379252, 379283, H04M 1100

Patent

active

061012521

ABSTRACT:
The ADSI system 100 has a file stored in RAM 202 or ROM 204. The file plays a CAS tone. The CAS tone is disguised by playing one or more introductory tones as frequencies lower than the CAS tone. The user is conditioned to receive a CAS tone by ramping the CAS tone amplitude or increasing the amplitude in discrete steps.

REFERENCES:
patent: 4751726 (1988-06-01), Hepp et al.
patent: 5493609 (1996-02-01), Winseck, Jr. et al.
patent: 5519774 (1996-05-01), Battista et al.
patent: 5574777 (1996-11-01), Lewis
patent: 5583922 (1996-12-01), Davis et al.
patent: 5583924 (1996-12-01), Lewis
patent: 5649002 (1997-07-01), Brady et al.
patent: 5836009 (1998-11-01), Diamond et al.
patent: 5862212 (1999-01-01), Mathews

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