Remove sound when user press keypad for recording

Hi Guys

This might sound like silly questions, I did some search and can’t seem to be able to find anything.

When we want to record a call user press *[asterisk] 1, while this works, is there a way to remove the [Beep] sound when user enters * 1 into the keypad. because on the receiving end, this loud an annoying.

Thanks in advance.