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:
May. 25, 2004
Filed:
Aug. 18, 2000
Rudolf Ritter, Zollikofen, CH;
Walter Heutschi, Jegenstorf, CH;
Swisscom Mobile AG, Bern, CH;
Abstract
The present invention relates to a call-back method for telecommunications and to devices adapted accordingly, wherein a first subscriber with a first communication end device (A) that preferably comprises a SIM-card, indicates to a telecommunication system that he wants to communicate with at least a second subscriber with a second communication end device (B). Connections ( ) are further established to a backbone ( ) through a local gateway ( ) and a destination gateway ( c), wherein said gateways provide for an economical communication. The local gateway ( ) and the destination gateway ( ) are determined so that the current charging rate towards the communication end devce (A) of the calling subscriber, or towards the communication end device (B) of the a called subscriber, is as reduced as possible. The current charging rates of the gateways ( ) are monitored during the communication and, if need be, a communication end device (A) is connected by handover to the backbone ( ) through a more economical gateway ( ).