am a bit confused, rang optus to take off global roaming after previous posts and they advised me to buy a bali sim card and when i ring australia to +61 then drop first 0 and then dial number. from australia they would +62 and if there is a 0 drop this and then the number. but does that person in australia have to be on global roaming to receive this call. i forgot to ask them this. can anyone help thanks for any replies