i tried calling my friend whose at work that time and the prompt says "The number you dialed is busy at the moment please try again later". He said that there is no signal in their Office. but i tried calling myself to see if the voice prompt is the same as when the line is currently engaged to another line and if it out of signal and it is. I'm just wondering if it is possible to have the same voice prompt for different reasons. btw, i am talking about sun cellular line. hope you can help me. i really need to know. if he's lying. lol :) I just feel like he is. kasi pareho ung voice prompt sa busy line ko and dun sa "Wala" Daw signal niyang phone. hope for good answers.