CM4500 Mobeye Panic Button - Tous les Vragens

The machine makes calls to pre-defined numbers (only a simple beep call) or those receiving the calls can hear the sound environment in order to understand what kind of situation is occurring?
The same question for Mobeye I110. It is unclear whether the calls allow the supervisor to listen to what is going on or just be a call alert without the possibility of listening
I appreciate your response on this matter. Thank you very much.

António