Yealink VC400 User Manual page 160

User Guide for the VC400 Video Conferencing System
The display device prompts "Reset to Factory?"
Select OK, and then press
7.
The system reboots automatically, the LCD screen of the VCP40 phone prompts
"Rebooting Please wait...". The phone will be reset to factory sucessfully after startup.
Reset of the system may take a few minutes. Do not power off until the phone starts up
Note
successfully.
Resetting the system is configurable via web user interface at the path
Setting->Upgrade->Reset to Factory.
148
.