Called party response detecting apparatus

Details Called party response detecting apparatus Called party response detecting apparatus

1991-01-02

1994-02-15

Chan, Wing F.

Telephonic communications

Supervisory or control line signaling

Signal receiver

379372, 379377, H04M 1100

Patent

active

052874052

ABSTRACT:
A called party response detecting apparatus of a terminal equipment includes a plurality of filter units, a determining unit, and an analyzing unit. The filter units are commonly connected to an input side and detects specific frequency components included in a plurality of signal tones coming from a telephone line. The determining unit checks the presence/absence of each output from the filter units for each fundamental period to determine a signal type on the basis of a predetermined output pattern. The analyzing unit analyzes various signal tones and a called party response on the basis of occurrences of signal type outputs during a predetermined time period of the determining unit.

REFERENCES:
patent: 4686699 (1987-08-01), Wilkie
patent: 4696031 (1987-09-01), Freudberg et al.
patent: 4811386 (1989-03-01), Sano et al.
patent: 5109409 (1992-04-01), Bomgardner et al.

Affiliated with

Also associated with

Rating

Called party response detecting apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Called party response detecting apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Called party response detecting apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1213657