Remotely Check Voicemail

Hey guys I was just curious... I have done a search and have found people saying opposing things but basically I am wondering, if my phone is out of coverage (ie. the visual voicemail never gets delivered) or I left my phone at home (ie. the visual voicemail gets delivered but not listened to, or listened to by someone else but not me)... is it possible to call my voicemail and check my messages in all of these instances? And if so is it just calling your phone number and pressing star and entering your password? This is for a 3g if I could please have someone that is positive and has done this recently that would be great.