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. 20, 2009
Filed:
Feb. 19, 2002
Mahadev Somasundaram, Santa Clara, CA (US);
Mahadev Somasundaram, Santa Clara, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
Disclosed are methods and apparatus for managing a registration state of an endpoint node in a network address port translation environment. A registration message is received from a first endpoint node located within a local network. The registration message is sent from the first endpoint node to a gatekeeper node, and the registration message includes a local source address of the first endpoint node, a local source port of the first endpoint node, and local call signaling information to be used by another endpoint node to initiate a data connection with the first endpoint node. The local source address of the first endpoint node is translated into a first global address. A first binding that associates the local source address with the global source address is created. The local call signaling information is translated into global call signaling information. A registration state of the first endpoint node is maintained, and the first binding is maintained based on the registration state (e.g., by using 'registration doors').