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:
Oct. 09, 2012
Filed:
May. 15, 2006
Magnus Hallenstål, Täby, SE;
Torbjörn Cagenius, Sollentuna, SE;
Andreas Fasbender, Aachen, DE;
Telefonaktiebolaget LM Ericsson (Publ), Stockholm, SE;
Abstract
A method of establishing a secure communication channel between a user terminal () and a SIP server () for the purpose of controlling a service such as an IPTV service. The method comprises sending from the user terminal () to the SIP server () a session initiation request, via an IP Multimedia Subsystem network, where the IP Multimedia Subsystem network incorporates into the request a P-Asserted-Identity. At the SIP server (), access to the service is authorized on the basis of said P-Asserted-Identity and, upon successful authorization, a security token is sent to the user terminal (), via the IP Multimedia Subsystem network. The SIP server () and the user terminal () use said security token to establish a secure communication channel between each other.