Yealink VC400 User Manual page 43

The default administrator password is "0000". For security reasons, the administrator
should change the default administrator password as soon as possible.
Do remember the new administrator password or keep a copy of the password in a safe place. If
Note
you forget the password, you will need to reset the
the password or use the default password "0000".
Press
8.
the previous screen.
The display device displays firewall port mapping information.
(Next soft key) to continue or press
system
to the factory settings, and then reset
(Previous soft key) to return to
Getting Started
31