Remote access for centrally located answering and recording equipment
US4049915A · kind A · utility
6Cited by
4References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 20, 1975 |
| Grant date | Sep 20, 1977 |
| Priority date | — |
| Expiry date | Jun 20, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/533
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A telephone answering and recording system designed for installation in a centralized location remote from the customer's premises. A single line is employed in normal operation between the customer's telephone equipment and the centrally located answering and recording equipment. Included is circuitry for counting incoming ringing signals before recording of incoming messages begins. Protection against false operation due to dial transients is also included.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.