Communication system with registration and two way radio
US5109400A · kind A · utility
64Cited by
7References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1989 |
| Grant date | Apr 28, 1992 |
| Priority date | — |
| Expiry date | Apr 28, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A radio communication system with on/off premise registration is provided. When a radio is registered with the system, incoming calls for the radio are directed to the radio via the system. When the radio is registered as off the system information is transmitted to the radio as via a wide area system. A voice mailbox is provided for storing messages when the radio is unavailable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.