If you are with someone else, have that person call while you begin compressions.
TIP: Be specific.
If you call from a mobile phone it's important to give your exact address, as your mobile number is not associated with a fixed location.
Related: CPR saves a life. After presenting about the impact of quality CPR at U.S. hospitals at an American Heart Association meeting, Duke cardiologist Monique Anderson, MD, found herself in a life-or-death situation that put her and her research into action.