Apparatus and method for determining the source of a telephone c

Details Apparatus and method for determining the source of a telephone c Apparatus and method for determining the source of a telephone c

1992-12-08

1997-12-09

Matar, Ahmad F.

Telephonic communications

Centralized switching system

With generating of call associated substation signal

379373, 379375, 370384, H04M 302

Patent

active

056968175

ABSTRACT:
A communication apparatus in accordance with the present invention determines the origin of an incoming telephone communication based on the calling party's number. When a call is made to a communication line to which an apparatus of the present invention is connected, the apparatus determines the number of digits in the calling party's number, and uses a ringing pattern or tone to indicate the source of the incoming call to the called party.

REFERENCES:
patent: 4107477 (1978-08-01), Morrison
patent: 4477697 (1984-10-01), Judd et al.
patent: 4958369 (1990-09-01), Tsuchida
patent: 5001709 (1991-03-01), Satoh
patent: 5008884 (1991-04-01), Yazaw et al.
patent: 5034948 (1991-07-01), Mizutani et al.
patent: 5073922 (1991-12-01), Okada
patent: 5142571 (1992-08-01), Suzuki et al.
patent: 5214692 (1993-05-01), Chack et al.
Teleconnect Magazine, "TLE/Communications' EXEL-2--A KSUless System, Folks" by Ed Leibowitz, Sep. 89, pp. 127-129.
Telephony Magazine advertizement "New Products and Services",Sep. 15, 1986, p.90.

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