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:
Sep. 15, 2009
Filed:
Mar. 24, 2004
Stefan Berndt, Bönen, DE;
Bruno Bozionek, Borchen, DE;
Bernd Hinz, Rheda-Wiedenbrück, DE;
Thorsten Laux, Paderborn, DE;
Ralf Neuhaus, Lünen, DE;
Christian Scheering, Bielefeld, DE;
Rainer Uecker, Mülheim, DE;
Rainer Zimmermann, Paderborn, DE;
Stefan Berndt, Bönen, DE;
Bruno Bozionek, Borchen, DE;
Bernd Hinz, Rheda-Wiedenbrück, DE;
Thorsten Laux, Paderborn, DE;
Ralf Neuhaus, Lünen, DE;
Christian Scheering, Bielefeld, DE;
Rainer Uecker, Mülheim, DE;
Rainer Zimmermann, Paderborn, DE;
Siemens Aktiengesellshaft, Munich, DE;
Abstract
In order to operate a communication terminal for packet-oriented data transmission, at least one piece of status information is stored, for a communication terminal, in a memory unit associated with the communication terminal. Said status information is provided with a digital signature that is calculated from the status information by means of a private key for an asymmetrical encoding method associated with a first control unit associated with the communication terminal, for the resolution and/or conversion of network addresses. If the first control unit fails, a request is transmitted comprising the status information and the digital signature to associate the communication terminal with at least one second control unit, and the digital signature is checked. In the event of a positive check result, the communication terminal is associated with the second control unit.