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:
Apr. 07, 2015
Filed:
May. 25, 2007
Applicant:
Matthias Britsch, Königswinter, DE;
Inventor:
Matthias Britsch, Königswinter, DE;
Assignee:
T-Mobile International AG, Bonn, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06Q 99/00 (2006.01); H04L 29/06 (2006.01); G06Q 20/38 (2012.01);
U.S. Cl.
CPC ...
H04L 63/04 (2013.01); G06Q 2220/10 (2013.01); G06Q 20/382 (2013.01); H04L 63/126 (2013.01);
Abstract
The invention relates to a method for securing IP connections with a combinatory connection of a communication network of a first network operator with a communication network of at least one second network operator using the Session Initiation Protocol, SIP. This method is based on the fact that portions of an SIP message, but at least the information necessary for the combinatory connection of the networks, is transmitted in encrypted form between a transmission channel of the first network operator and a reception channel of the second network operator.