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. 15, 2011
Filed:
Jul. 10, 2003
Manish Mangal, Overland Park, KS (US);
George Georgiou, Olathe, KS (US);
Anand Chakraborty, Olathe, KS (US);
Manish Mangal, Overland Park, KS (US);
George Georgiou, Olathe, KS (US);
Anand Chakraborty, Olathe, KS (US);
Sprint Spectrum L.P., Overland Park, KS (US);
Abstract
Mobile switching centers (MSCs) in serving systems are interconnected by gateways for tandem free operation. The serving systems route calls involving two mobile stations that use the same compressed digital format through the gateways. The gateways carry the media exchanged during the call in the compressed digital format in order to avoid tandem transcoding. When a serving system hands off a mobile station involved in a tandem free call, the call pathway is extended through the gateways so that the call remains tandem free.