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:
Sep. 23, 2003
Filed:
Jul. 30, 1999
Weiqian Dai, Naperville, IL (US);
Tony Tuong Nguyen, Aurora, IL (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
A method of reducing, or even eliminating, the tariffs, surcharges and long-distance charges that might be incurred for calls involving wireless switching centers in multiple regions (or countries) is disclosed. This is accomplished in the illustrative embodiment by trunking calls directly from the calling wireless switching center to the visiting wireless switching center, where advantageous, without trunking the call across a regional or political boundary as is done in the prior art. 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.