Private IP telephony backbone linking widely-distributed enterprise sites
US6215783A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 13, 1998 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | Nov 13, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/5183
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A hybrid IP backbone network spans geographic locations of two or more publicly-switched telephone networks and includes nodes with translation servers adapted to translate between data protocols compatible with the PSTNs and a data protocol compatible with the IP backbone network. Calls placed in one PSTN then may be routed to an IP node, translated to data-packet protocol, through the IP backbone to a second node having another translation server, and therethrough into another PSTN and thence to a final destination. In some embodiments data gateways and trunk gateways are also provided at and integrated with IP nodes in the IP backbone network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.