If you want to be notified when a camera stream is enabled or disabled, you may do so using a new event for this in the 'Event Filters' list of the Ocularis Recorder Proxy. Under 'Camera Events' you can select 'Disable Stream' and / or 'Enable Stream'. You still need to configure the event using Ocularis Administrator as you would any other event (i.e. map a camera to the event in the Servers / Events Tab and designate event distribution rules in the Distribution Groups Tab.)