Ability to adjust sound of alert level for new calls

Hello and thank you for taking the time to read this posting that I have created for everyone to read. My name is Lucifer_1981 and I have had this suggestion on my mind for quite some time just never really thought about bringing it to the forums but what the hell. Ok so sometimes when I am waiting on calls I like to watch my television or listen to music or watch movies on yt while waiting for new calls to be received. However the alert which is in the game is quite loud and I was wondering if there is a way to adjust the volume so it is not so loud and heart attack startling.