Communication system with communication route retrieval and selection function
US6483835B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1998 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Jun 8, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2215/82
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A gateway (GW) for relaying a communication between a public telephone network and a routing server for managing use status of the GW and a network are provided on the internet. When a connection request is received, the GW issues a request to retrieve a route in which the costs are minimum and a necessary bandwidth can be reserved. The routing server retrieves the route of the minimum costs using the bandwidth reservation status of the internet and the partner's telephone number and notifies the request issued GW of the address of the partner GW. The costs at that time point may be notified to the user and the user selects whether the communication is performed or not. By managing the current connection information established by each GW, if a necessary bandwidth cannot be reserved, an audio compression ratio may be changed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.