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:
Jan. 03, 2012
Filed:
Oct. 18, 2004
Robert Daniel Maher, Iii, Plano, TX (US);
Aswinkumar Vishanji Rana, Plano, TX (US);
Milton Andre Lie, McKinney, TX (US);
James Robert Deerman, Lucas, TX (US);
Robert Daniel Maher, III, Plano, TX (US);
Aswinkumar Vishanji Rana, Plano, TX (US);
Milton Andre Lie, McKinney, TX (US);
James Robert Deerman, Lucas, TX (US);
Audiocodes Texas, Inc., Plano, TX (US);
Abstract
An apparatus and method for traversing a network address translation/firewall device to maintain a registration between first and second devices separated by the firewall device are provided. In one example, the method includes intercepting a registration message from the first device to the second device. A determination is made based on a first timeout period defined by the second device as to whether it is time to renew the first device's registration. If it is time to renew the first device's registration, the registration message is forwarded to the second device. A response message that includes the first timeout period is intercepted, and the first timeout period is replaced with a second timeout period based on a binding lifetime of the firewall device before forwarding the response message to the first device.