Mobile terminal, program for controlling mobile terminal, program for call-management server, and call management process
US7515934B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2004 |
| Grant date | Apr 7, 2009 |
| Priority date | — |
| Expiry date | Sep 11, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A mobile terminal which can use a plurality of communication mediums enabling a wireless call by dynamically switching between the plurality of communication mediums during a call. When the condition of communication realized by a call-through-LAN unit deteriorates and deviates from a predetermined criterion during a first call through the call-through-LAN unit, the call switch unit establishes a connection through the call-through-telephone-network unit, and switches from the first call to a second call through the call-through-telephone-network unit. Thereafter, when the condition of communication realized by the call-through-LAN unit is restored to satisfy the predetermined criterion during the second call, the call switch unit switches from the second call to a third call through the call-through-LAN unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.