Invention Grant
- Patent Title: Voice communication system and voice communication method
- Patent Title (中): 语音通信系统和语音通信方式
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Application No.: US11907851Application Date: 2007-10-18
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Publication No.: US07920550B2Publication Date: 2011-04-05
- Inventor: Naoko Iwami , Susumu Matsui , Keiko Takahara
- Applicant: Naoko Iwami , Susumu Matsui , Keiko Takahara
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Mattingly & Malur, P.C.
- Priority: JP5-343162 19931215
- Main IPC: H04L12/66
- IPC: H04L12/66 ; H04M11/00

Abstract:
A voice communication system, which is connected to a LAN to which communication terminals are connected and to a public network to which telephones are connected, is provided with a communication server between the LAN and public network having different protocols from each other. The communication server enables a voice communication between a telephone on the public network and a communication terminal connected to the LAN by performing processing similar to that for a voice communication between two communication terminals connected to the LAN. The communication server determines whether an address of the other party inputted by a user is a communication terminal address or a telephone number, and transmits a voice communication request to a communication terminal of the other party when the address is a communication terminal address. When the address is a telephone number, the user acquires the communication terminal address of the communication server, and transmits a voice communication request to the communication server. Thereafter, the voice communication processing is performed through the communication server.
Public/Granted literature
- US20080049730A1 VOICE COMMUNICATION SYSTEM AND VOICE COMMUNICATION METHOD Public/Granted day:2008-02-28
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