Weird problem. Lately if I am on a call and another call comes in, the phone rings loudly, rudely interrupting my call and nearly deafening me. Used to be that if a call came in while I was on an other it would just beep and show me who is calling allowing me to accept or ignore. Now while it does allow me to accept or ignore the inbound call, it rings loudly instead of beeps until I accept it, ignore it, or hang-up. It is quite disruptive. Any thoughts on why and how to fix it?? Thx!!