Communications device to establish call in
US5640449A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 1995 |
| Grant date | Jun 17, 1997 |
| Priority date | — |
| Expiry date | May 12, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/282
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A communications device, connectable to a digital network, such as an ISDN, for setting up a voice call to a remote telephone via the network, the device comprising logic for sending a call signal to the network to establish a call via the network to a local telephone, characterized by call transfer logic for sending further signals to the network to transfer the established call to the remote telephone in response to a confirmation signal from the network indicating that the local telephone has been answered, thereby establishing a voice call between the local telephone and the remote telephone. In one embodiment the device is in the form of a communications adapter for a personal computer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.