112 is the emergency telephone number in case of accident or medical crisis, fire, crime in progress, natural disaster and for search and rescue on land, at sea and in the air. Emergency responders are on call 24 hours a day, 365 days a year. When calling 112, do the following: Say what has happened and where. Stay calm and answer questions as best as you are able. Do not hang up before you are told it is all right to do so.