Telephone digital office cutover system
US4334129A · kind A · utility
5Cited by
1References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1980 |
| Grant date | Jun 8, 1982 |
| Priority date | — |
| Expiry date | Oct 17, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/30
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system for automated pre-testing of subscriber pairs prior to final transfer from an old telephone office to a new digital central office. The system combines a known line verification tester, a trunk transition system, and an optional line ringing tester interconnected through a novel micro computer based interface. The interface controls the tests performed by the line verification tester and line ringing tester prior to transfer of tested circuits to the central office.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.