Chee Lo Lee

US Patent:

6587688, Jul 1, 2003

Filed:

May 2, 2000

Appl. No.:

09/561623

Inventors:

Michael Dwayne Chambers - Plainfield IL
Chee Keong Lee - Hilliard OH
Tony Tuong Nguyen - Aurora IL
Charles C. Teising - Naperville IL

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

H04Q 720

US Classification:

455433, 455432

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 roamers 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 roamers home country.

US Patent:

6782254, Aug 24, 2004

Filed:

Jul 30, 1999

Appl. No.:

09/364724

Inventors:

Michael Dwayne Chambers - Plainfield IL
Weiqian Dai - Naperville IL
Chee Keong Lee - Hilliard OH
Tony Tuong Nguyen - Aurora IL

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

H04Q 700

US Classification:

455417, 455433, 455445

Abstract:

A method of forwarding a call properly for a wireless terminal when the wireless terminal is roaming in a different region (or country) than where its home location register resides is disclosed. In particular, this is accomplished by having the home location register and the serving wireless switching system implement procedures for internationalizing, when appropriate, forward-to numbers, and for nationalizing, when appropriate the same forward-to numbers. The illustrative embodiment of the present invention comprises: receiving at a first wireless switching center a first call set-up message from a second wireless switching center; transmitting, in response to the first call set-up message, a second call set-up message from the first wireless switching center to a third wireless switching center; receiving, in response to the second call set-up message, a first call set-up response message at the first wireless switching center from the third wireless switching center; and transmitting, in response to the first call set-up response message, a call set-up response message from the first wireless switching center to the second wireless switching center directing the second wireless switching center to set-up a call directly with the third wireless switching center.