Method and system for processing tones to reduce false...

Details Method and system for processing tones to reduce false... Method and system for processing tones to reduce false...

2007-03-06

2007-03-06

Pezzlo, John (Department: 2616)

Multiplex communications

Diagnostic testing

Determination of communication parameters

C370S400000, C379S386000, C704S233000

Reexamination Certificate

active

10138220

ABSTRACT:
A tone processing method and communications system which reduce the probability of falsely detecting modem and facsimile communications that occur on a communications link. The link connects a calling endpoint to an answering endpoint. In a preferred embodiment, when the answering endpoint goes off-hook in response to receiving a call from the calling endpoint, an elapse of time is measured while monitoring the link. If a predetermined amount of time elapses without detecting at least one tone on the link, tone detection criteria is modified to reduce tone detection sensitivity, or to ignore tones altogether. In another embodiment, the tone detection criteria is similarly modified if voice activity is detected on the link. In yet another embodiment, when tones and voice activity occur at different times during a call, at least one characteristic is modified to optimize the link for the type of communications occurring on the link.

REFERENCES:
patent: 5392348 (1995-02-01), Park et al.
patent: 5521967 (1996-05-01), Novas et al.
patent: 6154721 (2000-11-01), Sonnic
patent: 6259691 (2001-07-01), Naudus
patent: 6504838 (2003-01-01), Kwan
patent: 2005/0276411 (2005-12-01), LeBlanc
patent: 1044558 (2003-11-01), None
patent: 0867856 (2005-10-01), None
patent: WO 00/77992 (2000-12-01), None
patent: WO 01/28256 (2001-04-01), None
PCT International Search Report for PCT/US03/13148, mailed Aug. 8, 2003, 6 pages.

Affiliated with

Also associated with

Rating

Method and system for processing tones to reduce false... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and system for processing tones to reduce false..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for processing tones to reduce false... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3750897