Automatic number identification blocking system
US5161181A · kind A · utility
147Cited by
14References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 10, 1990 |
| Grant date | Nov 3, 1992 |
| Priority date | — |
| Expiry date | Jan 10, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/571
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
ANI Blocking System (ABS) logically interfaces between a calling party and a called party in a telephone network which provides CallerID and CallerID blocking. The ABS automatically: (1) accepts a call from the calling party; (2) places a call to the called party; and (3) connects the called party with the calling party.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.