Call-back method for telecommunications and devices adapted accordingly
US6741691B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2000 |
| Grant date | May 25, 2004 |
| Priority date | — |
| Expiry date | Aug 18, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M7/1285
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
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 (10, 11, 2a, 2c) are further established to a backbone (1) through a local gateway (3a) and a destination gateway (3c), wherein said gateways provide for an economical communication. The local gateway (3a) and the destination gateway (3c) 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 (3a, 3b, 3c) are monitored during the communication and, if need be, a communication end device (A) is connected by handover to the backbone (1) through a more economical gateway (3b).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.