Passive call blocking method and apparatus
US7042997B2 · kind B2 · utility
21Cited by
2References
63Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 30, 2001 |
| Grant date | May 9, 2006 |
| Priority date | — |
| Expiry date | Oct 10, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M7/006
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A process and apparatus to support passive call blocking, a call block that is performed in a manner that the caller does not recognize as a call block. When passive call blocking is utilized, blocked callers receive a passive response, such as a continuous telephone ring, instead of an error message or rejection notification. The caller is thus unaware or uncertain that they have been blocked. Blocked calls are determined by comparing caller identification information with a caller database.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.