Virtual private switched telecommunications network
US6879671B2 · kind B2 · utility
10Cited by
11References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2003 |
| Grant date | Apr 12, 2005 |
| Priority date | — |
| Expiry date | Sep 19, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2242/22
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system and method to provide secure communication across the untrusted public switched telephone network includes a set of rules in a security policy which are implemented by a virtual private switched telecommunications network (VPSTN). The VPSTN provides for intercepting voice calls and modifying their set-up to include a request for bearer capability to support a data call.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.