Voicemail notification

How do you configure Asterisk to give you an audio or call display message when you have new voicemail?

OK, I’ve had the system for a month and just realized that on the IAX2 hardphone (320i) the little light blinks when there are new messages.
I never said I was very bright…
Is there a way to have a audible notification for the analogue phones running through a SPA2002?

Not for sure about that paticular model but som support a Stutter dial-tone. See link


Thank you, much appreciated.