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:
Nov. 25, 2003
Filed:
Jun. 02, 1999
Robert G. Zicker, Roswell, GA (US);
John K. Dion, Roswell, GA (US);
GTE Wireless Service Corporation, Alpharetta, GA (US);
Abstract
A radiotelephone ( ) simulates the call origination process performed by land-line telephones. Dial tone is generated ( ) in response to an off-hook condition and removed when a first digit ( ) is dialed. A timer process ( ) and a number analysis process ( ) simultaneously evaluate dialed digits to detect the completion of dialing. The number analysis process ( ) identifies seven, ten, and eleven digit, and indeterminate length phone number formats ( ). The ten digit format is recognized in response to remotely programmed ( ) connected NPA codes. For most calls, the number analysis process ( ) instantly detects a phone number's final digit ( ). In a few cases the timer process ( ) detects the final digit through the absence of dialing activity for a predetermined duration. When the final digit ( ) is detected, an origination message is transmitted to a cellular network.