It is true that calls, of course, especially the line that we have is totally traceable. GSM has a feature like the GPS which can tell where you are in real-time. So it's not surprising.

What should surprise you is that this call-tracing is not accessed by any ordinary person unless it has something to do with "clear and present danger". I dont think that caller who made a provoked or random or unwarranted feedback, "You suck" to the DJ on the phone falls under in that category. It could be that caller's personal-honest opinion and out of instinct the DJ replied with some quotable lines like that.

Also, when you open up your lines to the public it is called "third party" meaning, the DJ, the radio station and not even QTel who gives callers the access to send and make calls to whomever they want, has in any control to it especially if they decided to air these live calls. Otherwise, callers will not feel cofmfortable and will always bear in mind that their calls are always "being watched" as the DJ's said it...