System and method for connecting and interfacing a communications device to a telephone line via a telephone set
US6222910A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 1998 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | May 29, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M11/06
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention is directed to a novel system and method for connecting and interfacing a communications device, such as a modem, to a two-wire telephone line via a telephone base set, thereby allowing for data or voice communications on the telephone line. The modem and the telephone base are interconnected by way of an interface adapter, which also provides a connector for connecting the telephone's handset. Relay circuitry present within the interface adapter automatically switches between a data mode state and a voice mode state, depending upon what kind of communication is desired over the telephone line. In a preferred embodiment, the system also includes a cable detector circuit that allows the modem to automatically detect when it is connected to a telephone base by way of the interface adapter. Also disclosed, is a novel method for programming the host computer connected to the modem, and the communication processor located on the modem. The program method controls and automates the connection sequence and also functions so as to allow for the calculation of the particular transmit volume level to be used by the modem depending upon the particular type of telephone b…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.