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.

Date of Patent:
Nov. 29, 2016

Filed:

May. 08, 2015
Applicant:

At&t Intellectual Property I, L.p., Atlanta, GA (US);

Inventors:

Bernard Ku, Austin, TX (US);

Lakshminarashimhan Naidu, Pearland, TX (US);

Armstrong Soo, San Ramon, CA (US);

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01); H04L 29/08 (2006.01); H04L 29/12 (2006.01);
U.S. Cl.
CPC ...
H04L 65/1073 (2013.01); H04L 61/1529 (2013.01); H04L 65/1006 (2013.01); H04L 65/1016 (2013.01); H04L 65/1069 (2013.01); H04L 67/306 (2013.01);
Abstract

A method, apparatus and computer-readable medium for identifying a subscriber home domain in a communication network are described. A national subscriber profile is partitioned into regions and a NAPTR resource record is modified to identify in which region a particular subscriber is located. In response to a calling party requesting that a connection to a called party be established, a database is queried to provide a modified NAPTR record which identifies the region in which the called party is located. A connection can then be established without polling each region.


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