Digital PBX integrated workstation security system
US4654640A · kind A · utility
54Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1985 |
| Grant date | Mar 31, 1987 |
| Priority date | — |
| Expiry date | Dec 3, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/1409
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A theft alarm system for use in combination with a digital signal PBX telephone system, includes a plurality of electronic tethers connected to individual pieces of protected equipment. Removal of the tether is automatically detected by a local security monitor which reports the condition to a central security controller via the PBX system. The security controller then provides dial-up reporting of the theft and/or sets an audible alarm at the equipment site.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.