Internet calling system
US6463051B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 17, 1997 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Jul 17, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2215/745
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system and method for placing long distance calls from a telephone through the Internet and for receiving telephone calls on a telephone from the Internet is disclosed. A phone server bridge circuit associated with a CPU includes an incoming line for receiving dual tone multi-frequency (DTMF) telephone numbers and normal voice signals. The received telephone numbers are supplied to a lookup table, which provides an Internet protocol (IP) address corresponding to the dialed number. A digital signal processor receives the Internet provider address and the normal voice signals associated with it and converts this information into Internet packets of digital data signals, including compressed voice signals. The packets of digital data signals then are supplied to a local area network, from which a router directs the Internet packets with compressed voice to the Internet provider associated with the Internet address. At the other end, the information is decompressed; and the dialed number is compared on a lookup table to provide the corresponding local called party telephone number. This telephone number and the decompressed and converted normal or analog voice information then is sup…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.