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    • 86. 发明授权
    • Network, network terminal device, IP address management method using the same, and program therefor
    • 网络,网络终端设备,使用其的IP地址管理方法及其程序
    • US07685284B2
    • 2010-03-23
    • US11345340
    • 2006-02-02
    • Tetsuya Yamashita
    • Tetsuya Yamashita
    • G06F15/173G06F15/177
    • H04L61/2015H04L69/40
    • When a communication malfunction occurs in the transmission line between routers, and operation is carried out by a backup system control device, IP telephone terminals can connect to the backup system control device through the use of an IP address that is previously acquired from the address management device and saved. When the transmission line has been restored, the IP telephone terminals reconnect to the address management device so that operation can be carried out using an IP address under the control of the address management device. In a system that is operated by DHCP, it is thereby possible to construct a network that can be operated without installing a DHCP server at each remote station.
    • 当路由器之间的传输线路发生通信故障时,由备用系统控制设备进行操作,IP电话终端可以通过使用先前从地址管理获取的IP地址连接到备份系统控制设备 设备并保存。 当传输线恢复时,IP电话终端重新连接到地址管理设备,以便在地址管理设备的控制下使用IP地址进行操作。 在由DHCP操作的系统中,由此可以构建可在每个远程站安装DHCP服务器的情况下操作的网络。