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:
Aug. 05, 2008
Filed:
Apr. 27, 2004
Heiko Dassow, Griesheim, DE;
Guido Koeppe, Griesheim, DE;
Reinhold Wehner, Rossdorf, DE;
Deutsche Telekom AG, Bonn, DE;
Abstract
A network-based verification of call connections is provided between a telecommunications subscriber terminal and a telecommunications service device selected by a service call number. This verification provides a way of enabling secure protection against an undesired selection of a service device and/or the selection of an undefined service device. A system and a method are provided in which during a call set-up, the selected call number is evaluated on the basis of at least one service call number stored in a communication network and/or at least one service call number area. In response to the identification of a service call number, the transmission of a defined confirmation information message from the telecommunication subscriber terminal is requested for the verification of the call connection, and in response to a mismatch between the requested confirmation information message and the confirmation information message transmitted, or not, by the telecommunication subscriber device, the call set-up is interrupted.