Contact with untested CATs may lead to virus infection. If allowed to exit, fatal errors may happen. Your CAT should have a system name. The name may need to be reinitialized repeatedly until the system can read it correctly. This lets you issue voice commands to bring the unit to an online state.
Many owners give their CATs a secret password as well.
You can also get the CAT's attention by booting the system. While this is effective, it is discouraged. This is pre-installed. Most owners use their system for game playing. CATs play best when they are new.