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:
Jan. 27, 2004
Filed:
Apr. 20, 1999
John H. Chiloyan, Woodinville, WA (US);
Leonard D. Zuvela, Mukilteo, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
A method and apparatus logs outgoing phone symbols dialed from an extension. To log the phone numbers, a switching network is coupled to the phone lines and passes a Dual Tone Multiple Frequency signal from the extension to a CODEC. The CODEC converts the analog signal it receives into a series of digital values that are passed to a digital signal processor. The digital signal processor decodes the series of digital values into a set of dialed-symbol values indicative of symbols dialed by the extension. The dialed-symbol values are packaged by a processing unit interface and transmitted to the processing unit where they are stored in a log database.