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:
Jun. 23, 2015
Filed:
Feb. 13, 2009
Paul Norwood Booth, Los Gatos, CA (US);
James Robert Molenda, Los Gatos, CA (US);
Mohamed Kamel Zanaty, Cary, NC (US);
John Knight Restrick, Jr., Montclair, NJ (US);
Paul Norwood Booth, Los Gatos, CA (US);
James Robert Molenda, Los Gatos, CA (US);
Mohamed Kamel Zanaty, Cary, NC (US);
John Knight Restrick, Jr., Montclair, NJ (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
In an example embodiment, an IP phone is connected to a network switch that has an established communications channel to a call control server. The network switch acts as a proxy for the phone exchanging registration information that in effect keeps the phone registered while the phone itself can go to sleep as defined by periods of the day, periods where the phone is unused, or presence, which can then wake-up quickly with assistance from the switch. If the switch is not able to act as proxy, the phone can switch from sleep mode to 'wake' up mode at predetermined intervals, such as every 30 seconds, in order to respond to keep alive packets from the call control server.