发明名称 Communication systems and methods for switching communication services
摘要 Provided is a communication system including a first, a second, a third, and a fourth apparatuses, in which the first and the second apparatuses communicate with each other over a first communication service, and the third and the fourth apparatuses communicate with each other over a second communication service. The first apparatus has a first communication means, a setup information obtaining means, and a first connection requesting means. The second apparatus has a second communication means, and a second connection requesting means. The third apparatus has a third communication means, and a setup information sending means. The fourth apparatus has a fourth communication means and a connection processing means.
申请公布号 US7580704(B2) 申请公布日期 2009.08.25
申请号 US20060346284 申请日期 2006.02.03
申请人 SONY CORPORATION 发明人 NARITA TETSUYA
分类号 H04M3/42 主分类号 H04M3/42
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