Cisco TelePresence Administrator's Manual page 384

2. Enter the new password and, when prompted, retype the password.
3. Type exit to log out of the root account.
Note: if your VCS is subsequently reconfigured to use TMS, the password must first be reset to the default
value of TANDBERG.
Cisco VCS Administrator Guide (X7.2)
Reference material
Page 384 of 498