Call Curfew blocks outgoing (and incoming) calls during the times of day you designate. The only calls that get through during those hours are calls you've specifically authorized -- so depending what you've authorized, you may (or may not) be able to call locally.
Someone who calls while Call Curfew is active hears: Your call has been completed. However, the party you are calling is not receiving calls at this time.
Similarly, if you try to call out on the Call Curfew line, you hear a fast busy signal or this message: The number cannot be reached now. Please hang up and try again later.
For printer-friendly instructions, download the Call Curfew user guide.