Premised based 3-way call detection device
US6795540B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Jun 9, 2003 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Jun 9, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2215/0148
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Disclosure of the invention encompasses the activation, validation and continued verification of an electronic device installed on a common telephone line usually at a residence, to prohibit a three-way call event from being performed by the local telephone after the device has been in communication with and activated by signal from a remote computer system.Furthermore the device and remote system can function in a prepaid calling mode keeping track of the prepaid amounts and debiting the amounts during the call. The invention functionality could also be integrated within a standard telephone inside a telephone housing or functionally into a wireless device or an IP soft phone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.