Voice to digital fax transmission
US6230024A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 1998 |
| Grant date | May 8, 2001 |
| Priority date | — |
| Expiry date | May 12, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W92/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A wireless communication network includes a mobile station and a base station which are adapted to allow an ongoing voice call to be converted to a digital fax call without forcing the user to relinquish the line and to restablish a call for the purposes of a transmitting digital fax (fax from a digital device). A base station controller is adapted to respond to an analog tone which prompts the base station to set up a digital fax call even though a voice call is already in place. Similarly, a mobile station is adapted to set up a digital fax call even though a voice call is in place either when it receives the analog tone originated by the PSTN or when it receives an AT command from a personal computer indicating that a digital fax transmission is desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.