Mobile communication system
US6564054B1 · kind B1 · utility
4Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1999 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | Aug 4, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W64/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a mobile communication system comprising a PBX connected to a mobile communication network through an interface unit and having a semi-public roaming function, a first PBX is connected to a second PBX having the semi-public roaming function with a leased circuit. The first PBX transmits a position registration/call transmission request of a PHS received by itself to a mobile communication network through the second PBX. The second PBX transmits a call reception request addressed to the PHS from the mobile communication network to the PHS through the first PBX.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.