Rongila Koitor Shilpi Biswas;
WT Code;
Caller Tune/Wellcome Tune Setup Proccess;
Grameenphone : Type : WT space 5793716 Send to 4000. Robi : Type : GET space 5793716 Send to 8466 . Airtel : Type : CT space 5793716 Send to 3123. Teletalk : TT space 5793716 Send to 5000. Banglalink : Type : down573299 Send to 2222.
