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:
Jul. 15, 2003
Filed:
Sep. 29, 1998
Krister Sallberg, Lund, SE;
Mahesh Patel, Plano, TX (US);
Ericsson Inc., Research Triangle Park, NC (US);
Abstract
A telecommunications system and method is disclosed for providing mobility management for a Mobile Station (MS) to allow the MS to receive Internet telephone calls when the MS is in idle mode. This can be accomplished by using a voice gateway to transform an incoming Internet phone call to a normal cellular voice call. In addition, by introducing a new Intelligent Network (IN) application, which handles location updates for the MS with a central Internet telephony server, an MS in idle mode can receive incoming Internet telephony calls. The IN application can obtain a temporary Internet Protocol (IP) address for the MS from a Direct Access Unit (DAU) connected to the voice gateway associated with the serving Mobile Switching Center (MSC) and register this temporary IP address with the central Internet server, which uses this temporary IP address to forward incoming Internet telephony calls to the Voice Gateway.