Active strapping and switching device for telephone line testing
US5528662A · kind A · utility
4Cited by
20References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 18, 1992 |
| Grant date | Jun 18, 1996 |
| Priority date | — |
| Expiry date | Sep 18, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2203/055
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Disclosed is a self-contained battery powered remotely controlled strapping and interconnection device for providing various selected interconnections and terminations of telephone lines or line pairs to which it is attached in order to establish testing configurations comprising a plurality of multi-contact latching relays selectably operable through a plurality of shift register devices under the control of an on-board processor responsive to dual tone multi-frequency instructional command signals remotely applied to a pair of lines. Plug-in expansion modules and battery charger modules are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.