Test trunk access controller
US4646342A · kind A · utility
10Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 1985 |
| Grant date | Feb 24, 1987 |
| Priority date | — |
| Expiry date | Sep 11, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/28
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A test trunk access controller includes a test trunk interface controller accessed by a subscriber line assigned to a service provider, or other remote metering facility, and a test trunk interface device inter-connecting the test trunk controller with the test trunk device of a local telephone switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.