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:
Feb. 11, 2003
Filed:
Dec. 31, 1997
Krister Sallberg, Lund, SE;
Ericsson Inc., Research Triangle Park, NC (US);
Abstract
A telecommunications system and method is disclosed for providing interoperability between a cellular system's direct access to the Internet and the telephony service provided by the Public Switched Telephone Network (PSTN), in order to allow a mobile subscriber to receive calls from the PSTN while engaged in data communication, for example, over the Internet. When a Mobile Station (MS) has an active connection to a server or router running Internet Protocol, an incoming PSTN call can be forwarded to a voice gateway within the serving Mobile Switching Center/Visitor Location Register (MSC/VLR), which transforms the call to an Internet phone call. During the direct access connection to the Internet, the MS can signal specific information, using, e.g., a prefix, to activate the call forwarding to voice gateway feature.