the manual tells you nothing so I just called my voicemail about 20 times trying different things I found.. I found this wiki page that didn't help... so I updated my finding onto it... its a lower case p to insert a pause on the omnia
http://www.wikihow.com/Add-Pauses-to-a-Phone-Number#Tipsit takes the annoying part out of typeing in your pw when you call from your own phone just type your voicemail #p(PW#)