Automatic number identification
US3943298A · kind A · utility
5Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 1974 |
| Grant date | Mar 9, 1976 |
| Priority date | — |
| Expiry date | Jun 26, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M15/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An automatic number identification system in a tributary office having simultaneous dual operation for high traffic capacity. A pair of identifier units applying identification signals via the sleeve wire associated with the calling stations to a common matrix or directory number network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.