Encapsulation, compression, and encryption of PCM data
US7231027B2 · kind B2 · utility
17Cited by
62References
51Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2004 |
| Grant date | Jun 12, 2007 |
| Priority date | — |
| Expiry date | Oct 4, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2207/35
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method to provide secure access across the untrusted public switched telephone network is described. The system and method can be initiated by a security policy defining actions to be taken based upon at least one attribute of the call.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.