Electronic exchange system for portable stations
US5978667A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1995 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Sep 19, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/16
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An electronic exchange system comprises an electronic exchange system for private branch exchanging, multifunctional telephone sets operating as wired extension terminals, public network main lines of a public telecommunication network that are cores for connecting the central telephone electronic exchange system and said electronic exchange system, leased or private lines, cell stations, a control terminal and portable stations of radio slave units for the cell stations. If an incoming call is not forwarded to the called portable station because the portable station does not respond, the incoming call is stored in a predetermined memory arranged with the electronic exchange system, which connects the portable station and the calling terminal once the portable station restores it communicable state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.