The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 1994
Filed:
Jul. 13, 1993
Applicant:
Inventors:
Michael J Polcyn, Allen, TX (US);
Ellis K Cave, Garland, TX (US);
Howard S Barnett, Dallas, TX (US);
Assignee:
InterVoice, Inc., Dallas, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
370377 ; 379386 ; 379382 ;
Abstract
There is disclosed a method and system for determining the progress of a calling connection. The system measures the peak voltage of the signals on the line and derives a ratio of these peak signals to the average value of the signal. From this ratio a determination is made as to the calling condition of the line.