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:
Jan. 07, 2014
Filed:
Mar. 03, 2008
Applicants:
Naoki Imai, Saitama, JP;
Manabu Isomura, Saitama, JP;
Hiroki Horiuchi, Saitama, JP;
Inventors:
Assignee:
KDDI Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01); G06F 15/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A client for IPv4 having a SIP function sends a first REGISTER message to an adapter. Then, the adapter executes an authentication sequence of EAP-AKA for an access gateway connected between an IMS/MMD network and an IPv4 network, then establishes a tunnel connection. Then, the adapter generates a second REGISTER message corresponding to IPv6 based on the first REGISTER message corresponding to IPv4. The adapter sends the second REGISTER message to a SIP server connected to the IMS/MMD network through the tunnel connection to the access gateway.