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. 16, 2018
Filed:
May. 06, 2011
Applicants:
Vladimir Gamaley, Rehovot, IL;
Gili Nachum, Bet-shemesh, IL;
Gil Perzy, Holon, IL;
Inventors:
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 15/16 (2006.01); H04L 29/06 (2006.01);
U.S. Cl.
CPC ...
H04L 65/105 (2013.01); H04L 65/1006 (2013.01); H04L 65/1073 (2013.01);
Abstract
Managing Session Initiation Protocol (SIP) subscription dialog state loss, including a SIP server locator configured to determine the identity of a SIP server that maintains a SIP subscription dialog corresponding to a SIP subscription dialog that is maintained by a SIP client, and a liveliness tester configured to periodically send to the SIP server a SIP RE-SUBSCRIBE message corresponding to the SIP subscription dialog.