I know that I can access asterisk voicemail from the outside through assigning an extension by doing something like this
exten = 250,1,Answer()
exten = 250,n,VoicemailMain()
exten = 250,n,Hangup()
BUT, is there a way to get to your voicemail messages by dialing your phone number and then pressing for example, * , and getting prompted for your password?