发明名称 |
COMMUNICATION CONFERENCE SYSTEM, SPEECH CONVERTER, AND SIGNAL CONVERSION ADAPTOR |
摘要 |
<p>A communication conference system that enables users who have only a connecting unit via a telephone line network and users who have only an IP connecting unit to hold a talk session mutually without a need of an expensive dedicated conference server is provided. A talk session device 1 includes a network processing portion for transmitting/receiving voice information to/from other equipments via IP, and a terminal for inputting/outputting a voice signal. The talk session device 1 is connected to a handset terminal of a telephone 3 via an adaptor 2 that converts the standards (mainly a level) of the voice signal. The talk session device 1 is connected to other talk session devices via IP, and is connected to other telephones by a telephone line via the telephone 3. Accordingly, a user serving as a destination of the IP and a user serving as a destination of the telephone line are connected mutually.</p> |
申请公布号 |
EP1990984(A1) |
申请公布日期 |
2008.11.12 |
申请号 |
EP20070713872 |
申请日期 |
2007.02.06 |
申请人 |
YAMAHA CORPORATION |
发明人 |
ISHIBASHI, TOSHIAKI;OSAKABE, KATSUICHI |
分类号 |
H04M1/253;H04M1/738;H04M3/56;H04M7/00;H04M7/12 |
主分类号 |
H04M1/253 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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