Apparatus for providing an
US5305377A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1991 |
| Grant date | Apr 19, 1994 |
| Priority date | — |
| Expiry date | Mar 29, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/405
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An interface for translating signals from a ISDN terminal to an analog telephone terminal including apparatus for separating ISDN signals into control and data signals, apparatus for utilizing the control signals to generate tone signals for transfer to a telephone line, apparatus for translating the digital control signals into signals controlling the transfer of data from digital to analog form, apparatus for translating digital signals in ISDN format into analog signals under control of the apparatus for translating the digital control signals into signals controlling the transfer of data from digital to analog form, apparatus for translating control signals in analog tone format to digital signals for controlling the transfer of signals to an ISDN terminal, apparatus for using the control signals for controlling the transfer of data from analog to digital form, and apparatus for translating analog signals into digital signals in ISDN format under control of the digital signals for controlling the transfer of signals to an ISDN terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.