Cordless telephone system with wireless expansion peripherals
US6990356B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2003 |
| Grant date | Jan 24, 2006 |
| Priority date | — |
| Expiry date | Jan 16, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W16/16
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A cordless telephone system comprising a base unit, at least one handset, and one or more expansion units is provided. The handset and the expansion units communicate with the base unit via communication channels implemented in a wireless communication protocol. The expansion units can provide the system with communication interfaces to various external networks, such as an additional analog telephone line, a digital telephone line, or a cellular telephone. Conference calling functionality is provided between handsets and expansion base units within the primary base unit. Data services can also be provided by a wireless expansion base unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.