In this report "Ambulance Care Europe" 1 in table 3.5 there is an emergency level and response times comparison between several EU countries. Showing a response time for emergencies in some countries at 5 minutes (Germany) in others 25 minutes (Norway, rural).
For example, in The Netherlands regulations (not law) state that an ambulance in case of emergency has to be at the scene within 15 minutes after the phone call in 95% of the cases. However, in 2001 only 91,8% actually managed that. The Dutch government is trying to pass a law that requires arrival within 8 minutes. Also, 60% of Dutch citizens live within a 5-kilometer range from a hospital others on average 10 kilometers.
In case of, (expected) CPR a private network of citizens in the area that can perform CPR and are volunteering in this network can also be alarmed by text to fetch a defibrillator in a specified public place near and bring it to the location, or go to a location directly and start CPR. Also, police or firefighters can be alarmed if the centralist thinks that the ambulance will be late. Out of experience, these volunteers often arrive faster because they are closer.