The trick is to remember the mnemonic ETHANE. This stands for:
* Exact Location - The precise location of the incident
* Type - The nature of the incident, including how many vehicles, buildings etc. are involved
* Hazards - Both present and potential
* Access - Best route for emergency services to access the site, or obstructions and bottlenecks to avoid
* Numbers - Numbers of Casualties, Dead and Uninjured on scene
* Emergency Services - Which services are already on scene, and which others are required
The unified emergency number to call in Malaysia is 999
(via Emergency Medicine Blog)
from the Malaysian Medical Resources
How to make a proper emergency call for medical emergencies (Source: Malaysian Medical Resources)