Cable telephony terminal device having a call line selector
US6029047A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Nov 13, 1997 |
| Grant date | Feb 22, 2000 |
| Priority date | — |
| Expiry date | Nov 13, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A call line selector of a cable telephony terminal device is connected to one telephone and this telephone is commonly used by two telephone systems. The call line selector automatically selects an optimum line from CATV and PSTN lines in correspondence with a dial number input from the telephone at the calling time, thereby connecting the selected line and the telephone and thereby enabling a user to have a telephone conversation. Also, at the receiving time, the call line selector detects a reception (incoming call) signal and, in correspondence with the detected result, connects the cable telephony line or PSTN line and the telephone and rings the bell of the telephone to notify the user of the reception of the incoming call signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.