错误!使用“开始”选项卡将 Heading 1 应用于要在此处显示的文字。 23The VTO will reboot, and you need to modify the IP address of your PC to the samenetwork segment as the VTO to log in again.4.3.4 Configuring SIP ServerThe SIP server is required in the network to transmit intercom protocol, and then all the VTOand VTH devices connected to the same SIP server can make video call between each other.You can use VTO device or other servers as SIP server.Select Network Setting > SIP Server.The SIP Server interface is displayed. See Figure 4-6.SIP serverSelect the server type you need. If the VTO you are visiting works as SIP serverSelect the Enable check box at SIP Server, and then click Save.The VTO will reboot, and after rebooting, you can then add VTO and VTH devicesto this VTO. See "4.3.6 Adding VTO Devices and 4.3.7 Adding Room Number."If the VTO you are visiting does not work as SIP server, do not select the Enable checkbox at SIP Server, otherwise the connection will fail. If other VTO works as SIP serverSelect VTO in the Server Type list, and then configure the parameters. See Table4-1.Table 4-1 SIP server configurationParameter DescriptionIP Addr. The IP address of the VTO which works as SIPserver.Port 5060Username Keep the default value.PasswordSIP Domain VDPSIP Server Username The user name and password for the webinterface of the SIP server.SIP Server Password