how i can switch off the busy tone that appears when the other mobile is busy.its sound is so noisy
i have imate jasjam

Try asking the person you are ringing to not accept calls from anyone except you Seriously though,You cant turn it off as it originates from the mobile phone provider you are calling

[pink panther]

this thread is old but here's the answer, record a .wav silent file or get a silent .wav silent file name it as busy.wav and replace in the windows folder of u jasjam.

et voila