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:
Oct. 05, 2010
Filed:
Jul. 18, 2005
Justin A. Aborn, Hingham, MA (US);
Karl E. Freter, Wheaton, IL (US);
Sanjay S. Jhawar, Chicago, IL (US);
James D. O'brien, Jr., Somerville, MA (US);
Mats A. Samuelsson, Norfolk, MA (US);
Bruce M. Wiatrak, Bolingbrook, IL (US);
Andre DE Verteuil, Toronto, CA;
Ivan Dean Bogdanovic, Brookline, MA (US);
Justin A. Aborn, Hingham, MA (US);
Karl E. Freter, Wheaton, IL (US);
Sanjay S. Jhawar, Chicago, IL (US);
James D. O'Brien, Jr., Somerville, MA (US);
Mats A. Samuelsson, Norfolk, MA (US);
Bruce M. Wiatrak, Bolingbrook, IL (US);
Andre De Verteuil, Toronto, CA;
Ivan Dean Bogdanovic, Brookline, MA (US);
Bridgeport Networks, Inc., Chicago, IL (US);
Abstract
A telephone system supports communication with user devices over both a cellular radio network as well as over an Internet Protocol (IP) network, and enables roaming and active call handoff between cellular and IP domains. Approaches to detecting presence of a user near a suitable IP network are used in controlling transitions between the domains, for example, enabling automatic transitions between domains, and delivery of calls to a mobile user to data network devices in the vicinity of the user.