Selective establishment of telecommunications connections over packet and circuit switched networks
US6704304B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2000 |
| Grant date | Mar 9, 2004 |
| Priority date | — |
| Expiry date | Jun 13, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/66
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A calling and called telecommunications station are each connected to a packet access network. The packet access network under the control of a server system, determines whether an originating call should be routed via a core packet network, such as the Internet, or a Public Switched Telephone Network (PSTN). If the expected delay of packets through the core packet network is excessive, then the call will be connected through the Public Switched Telephone Network. If, during the course of a call, the packet delay becomes excessive, and causes the quality of voice transmission to be below acceptable standards, the call is switched from the packet network to the Public Switched Telephone Network. Advantageously, as many calls as can be handled by the packet network are switched through that network, thus resulting in substantial savings to the customer. Advantageously, the embedded PSTN can be used productively to handle overflows from the core packet network. Advantageously, the quality of voice calls through the core packet network can be maintained by re-routing existing calls through the PSTN when necessary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.