Weatherproof telephone network interface modules
US5291553A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 10, 1992 |
| Grant date | Mar 1, 1994 |
| Priority date | — |
| Expiry date | Apr 10, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q1/20
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A weatherproof network interface module for providing connection between a customer's equipment and the telephone company owned portion of the customer loop includes an overvoltage protection device disposed therein in addition to the circuitry which provides a prescribed line test termination impedance having particular characteristic signature to the telephone central office when a continuity test is made on a subscriber line and may include an illumination device and test switch for indicating when the telephone company owned portion of the customer loop is in operating order, or may include a device for connecting or disconnecting the telephone company owned portion of the customer loop from the customer loop portion wherein all of terminals are weatherproof (protected from the environment).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.