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:
Dec. 04, 2001
Filed:
Apr. 27, 1999
Sean March, Plano, TX (US);
Jeffrey Chen, Richardson, TX (US);
Nortel Networks Limited, St. Laurent, CA;
Abstract
A telephone network redirects calls intended for an Internet Service Provider (ISP) to one of a plurality of available Internet Protocol (IP) gateways operated by the ISP. A call is received by the telephone network at an originating switch from a subscriber's calling terminal, the call directed to a toll-free-number or a central number (TFN) for the subscriber's ISP. The originating switch interacts with the signaling network via a coupled service switching point (SSP) to request a Dialed Number (DN) corresponding to the TFN. A destination switch (or a Private Branch Exchange “PBX” coupled to the destination switch), instead of completing the call, redirects the call to a new IP gateway coupled to a new destination switch or coupled PBX. The call is then routed from the calling terminal to the new IP gateway via the originating switch and the new destination switch via a lowest point in the traffic network.