Yealink VC400 Administrator's Manual

Also see for VC120: Getting started Recovery guide Quick guide Administrator's guide User guide

Getting Started39Powering the System On and OffNoteTo power on the system:After all components are connected, press on the VC400/VC120 codec. The indicator LEDon the VC400/VC120 codec then illuminates solid green.To power off the system:Do one of the following:– Long press on the VC400/VC120 codec.– Short press on the VC400/VC120 codec, the display device will prompt “Press thepower button to turn off the system. Press any button on remote control to cancel”.Press again to power off the system or press any button on the remote control tocancel.System InitializationOnce you have power on the system, it will begin its initialization process.During the initialization process, the following events take place:Loading the ROM fileThe ROM file sits in the flash memory of the system. Systems come from the factory with a ROMfile preloaded. During initialization, systems run a bootstrap loader that loads and executes theROM file.Configuring the VLANIf the system is connected to a switch, the switch will notify the system about the VLANinformation defined on the switch.Querying the DHCP (Dynamic Host Configuration Protocol) ServerThe system is capable of querying a DHCP server. DHCP is enabled on the system by default.The following network settings can be obtained from the DHCP server during initialization: IP Address Subnet Mask GatewayCaution! To avoid corrupting the system, you should always power off the system using thepower button on the VC400/VC120 codec. After turning the power off in this way, wait at least 15seconds before you unplug the power adapter from the VC400/VC120 codec. This helps toensure that the system powers off correctly.