System and method for modifying voice signals to avoid triggerin

Details System and method for modifying voice signals to avoid triggerin System and method for modifying voice signals to avoid triggerin

1998-03-25

2000-09-05

Chan, Wing F.

Telephonic communications

Supervisory or control line signaling

Signal receiver

379351, 379352, H04M 150, H04M 100

Patent

active

061154652

ABSTRACT:
A system and method for modifying voice signals to avoid triggering tone detectors in a telephone network. The system includes a voice processor coupled between the handset and station set of a conventional telephone unit. The voice processor modifies the voice signal to prevent triggering DTMF tone detectors.

REFERENCES:
patent: 4042790 (1977-08-01), Richards
patent: 4521647 (1985-06-01), Olson et al.
patent: 5257309 (1993-10-01), Brandman et al.
patent: 5438618 (1995-08-01), Jantzi et al.
patent: 5519764 (1996-05-01), Pierce et al.

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