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. 28, 2006
Filed:
Dec. 18, 2003
William N. Shores, Phoenix, AZ (US);
Barbara M. Desutter, Phoenix, AZ (US);
Thomas G. Hallin, Wheaton, IL (US);
Edward J. Neyens, Scottsdale, AZ (US);
Robert J. Thomas, Phoenix, AZ (US);
William N. Shores, Phoenix, AZ (US);
Barbara M. Desutter, Phoenix, AZ (US);
Thomas G. Hallin, Wheaton, IL (US);
Edward J. Neyens, Scottsdale, AZ (US);
Robert J. Thomas, Phoenix, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A third generation (3G) gateway provides the facilities for extending a number of internet protocols between a second generation (2G) network and a 3G network. The various messages of a session initiation protocol (SIP) are extended to provide user identification and server identification subfields. The SIP message extensions facilitate the communication of 2G and 3G networks for the purposes of implementing push-to-talk and dispatch service features.