Telephone communication system over a single telephone line
US7106721B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 16, 2000 |
| Grant date | Sep 12, 2006 |
| Priority date | — |
| Expiry date | Feb 20, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/13389
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An improved telephone system over a single telephone line within a residence or other building is disclosed, supporting exchange features and enabling easy expansion for multiple external lines. The existing telephone wiring is used as the medium for a local data communication network, carrying multiple voice channels. In each outlet, one or more voice channels are converted into a standard telephone-line interface. Life-line functionality is facilitated by using the lower band of the spectrum isolated from the data communication network, and a dedicated connector in the outlet provides access to this band. External telephone feeders are converted to digital form for interfacing to the in-home data communication network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.