Administrator’s Guide for Yealink Video Conferencing Systems30Mute Indicator LED on the VCM30 video conferencing microphone array:LED Status DescriptionSolid red The VCM30 is muted when the VC120 is during a call.Flashing red The VC120 is ringing.Solid greenThe VCM30 is connected to the VC120 codec within the first5 seconds.The VC120 is placing a call.The VCM30 is unmuted when the VC120 is during a call.Off The VCM30 is not connected to the VC120 codec.The VCM30 is idle.User InterfacesThree are two ways to customize the configurations of your system: Web User Interface Remote ControlThe following describes how to configure the VC400/VC120 video conferencing system via thetwo methods above.Detailed operation steps will be introduced in the feature section.Web User InterfaceYou can customize your system via web user interface. To access the web user interface, youneed to know the user name and the administrator’s password. The default user name is “admin”(case-sensitive), and the default password is “0000”. You can also access the web user interfacewith user credential, which is disabled by default. For more information on how to enable theuser credential, refer to User Mode on page 227.The system uses the HTTPS protocol to access the web user interface by default. For moreinformation on the access protocol for web user interface access, refer to Web Server Type onpage 229.Log into the web user interface of the system:1. Enter the IP address (e.g.,192.168.0.10) in the address bar of a web browser on yourcomputer, and then press the Enter key.2. Enter the administrator user name and password.3. Click Login.After you log into the web user interface successfully, you can click Logout on the topright corner of the web interface to log out.Administrator has full permission to access every menu in the web user interface. User can log