Method for connection of secure conference calls
US4920565A · kind A · utility
33Cited by
9References
51Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1988 |
| Grant date | Apr 24, 1990 |
| Priority date | — |
| Expiry date | Jul 18, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2203/609
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention provides a method and apparatus of making secure conference calls in which the bridging unit does not need to know any encryption keys and can function independently of the encryption process used by the communicating parties. This means that there is no security requirement for the conference unit, there are fewer restrictions on where it can be placed, and it does not introduce any additional weaknesses in the security system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.