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:
Jul. 01, 2003
Filed:
May. 02, 2000
Michael Dwayne Chambers, Plainfield, IL (US);
Chee Keong Lee, Hilliard, OH (US);
Tony Tuong Nguyen, Aurora, IL (US);
Charles C. Teising, Naperville, IL (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
Apparatus and a method for providing international numbers in order to implement international cellular roamer service. When a roamer registers, the Visitor Location Register (VLR) serving the roamer, queries the Home Location Register (HLR) record of the roamer. The HLR tests whether the VLR is in a foreign country. If so, the HLR provides numerical information, such as the roamer's billing number, in international form, including the country code of the HLR. Advantageously, the VLR is provided with international numbers where appropriate, and the roamer can be accommodated outside the roamer's home country.