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:
Dec. 12, 2006
Filed:
Aug. 11, 2005
Hung Viet Bui, Chantilly, VA (US);
Hung Viet Bui, Chantilly, VA (US);
Nextel Communications Inc., Overland Park, KS (US);
Abstract
A wireless communication system including an originator media gateway to encode voice data into an IP packet depending on whether tandem free operation (TFO) or normal operation is being used. The media gateway makes such determination independent of the TFO protocol being used. In particular, the media gateway determines that TFO is being used by determining whether bits in particular fields of a predetermined number N of voice octets are filler bits or not. If they are filler bits, then TFO is being used, otherwise, normal operation is being used. If TFO is being used, the media gateway forms an IP packet with data from only another particular fields of the voice octets. If normal operation is used, the media gateway forms an IP packet with data from the entire voice octets. A target media gateway determines TFO or normal operation by examining the size of the received IP packet.