Telephone call-back system controlled by an online data network in real-time
US6480474B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2001 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Apr 30, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2207/12
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A digital communication network such as the Internet is used to establish and control the telephone connections between two conferees with the telephone network being the means of exchanging verbal information. Each of the two conferees has a computer connected to the digital network, and each has an independent telephone instrument connected to the public switched telephone network. One of the conferees utilizes his computer containing appropriate software to initiate the call to the other conferee. The initiating conferee sends digital control information to a switch interface controlling a telephone switch as a gateway to the telephone network using SS7 control signals which implements the telephone connection between the conferees. The switch also provides telephone status information transmitted back over the digital network, and the status information is displayed on the computer monitors of the conferees.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.