Series connected interceptor
US4629831A · kind A · utility
18Cited by
5References
44Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1984 |
| Grant date | Dec 16, 1986 |
| Priority date | — |
| Expiry date | Feb 13, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/13256
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The series connected interceptor is a control system for assisting in providing improved service operations for a PBX system. This control system is connected in series in a DID trunk between a TELCO central office and a PBX. By the nature of where it is connected and its function, the control system enables a telephone answering service to sense when an incoming DID call has rung on an extension for a predefined number of rings and to answer such call with the identity of the extension being called. The control system also can provide incoming DID call screening or call forwarding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.