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. 13, 2012
Filed:
Mar. 21, 2007
Applicants:
Jan Holm, Örbyhus, SE;
Johan Svedberg, Stockholm, SE;
Inventors:
Jan Holm, Örbyhus, SE;
Johan Svedberg, Stockholm, SE;
Assignee:
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04Q 7/24 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of keeping a SIP application server advised of the status of a SIP client, where the SIP application server lies within both the signaling plane and the media plane for SIP clients and is responsible for accepting SIP clients into and removing them from a SIP session, the method comprising sending keep-alive messages from the SIP client to the SIP application server across the media plane.