I was just testing this out.  If there is a voice message how do we know we have one?  

I have set up the voice message with a PIN etc.  It doesn't say online, maybe I have been with them since the Snap days so we do get a email notification about missed calls and voice messages.  If it wasn't for the email notification how do we know?  When I lift the landline handset up there is also no pulsing tone.  

Cheers.