we have this phone and I used to dial into the machine often let me see if I can remember:
dial your home phone number
when the machine picks up, dial * or (#?) you'll hear a tone, then quickly dial the 3 digit security code you set up in your phone. (when you set day/date/time, security code follows. )
the machine will tell you what to press to hear your messages.
good luck!
Tracey
August 2007