Administrator‘s Guide for Yealink Video Conferencing Systems
22
Note
To power on the system:
After all components are connected, press on the VC400/VC120 codec. The
indicator LED on 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
the power 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
to cancel.
Once you have power on the system, it will begin its initialization process.
During the initialization process, the following events take place:
Loading the ROM file
The ROM file sits in the flash memory of the system. Systems come from the factory with
a ROM file preloaded. During initialization, systems run a bootstrap loader that loads
and executes the ROM file.
Configuring the VLAN
If the system is connected to a switch, the switch will notify the system about the VLAN
information defined on the switch.
Querying the DHCP (Dynamic Host Configuration Protocol) Server
The 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
Caution! To avoid corrupting the system, you should always power off the system using
the power button on the VC400/VC120 codec. After turning the power off in this way, wait
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