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:
Mar. 27, 2012
Filed:
Mar. 18, 2008
Akira Miyajima, Kanagawa, JP;
Yasuo Nishida, Kanagawa, JP;
Hidenobu Ueki, Tokyo, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An IP terminal apparatus has a SIP controller, a UDP packet controller, and an RTP controller. The SIP controller transmits and receives a call control message in order to establish a connection to and from a destination apparatus. The UDP packet controller transmits and receives media data with the destination apparatus in a media session after the connection was established. The RTP controller obtains source port number information of a media data packet that the UDP packet controller has received from the destination apparatus, and sets the obtained source port number as a destination port number for a packet to be transmitted to the destination apparatus. Thereby, a feasible range of NAT traversal can be improved in a simple and secure manner, even when at least one relay apparatuses employs symmetric NAT.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile