Serbia

Features of the emergency service:

When you dial 112 in Serbia you are presented with a choice to either press 1 for police by getting redirected to 191 which is the emergency number for police there, 2 for ambulance by it redirecting you to 192 and 3 for fire brigade by being redirected to 193. If you quickly press 1 when the automated message begins or when the line gets connected then your call to 112 in Serbia will be answered within 4 seconds if the operator is not busy (but only by the police, so this means that maybe not by your needed emergency service which's assistance you might need), but if you won't press any of these even when it will say it quickly for the 2nd time after the other 4 seconds(after it has said it for the first time of saying it the options, and before 2nd time it lasts only 4 seconds, as the message speaks very fast), then you'll be automatically forwarded to 191(police) within ten seconds after the automated voice message begins(after the line gets connected is the concrete mean of this sentence's section) and 2 seconds are the time for you to quickly hang up if you've accidentally dialed 112.

Curiosities about 112 in Serbia
 * The automated voice message is only in Serbian, so it requires Serbian language skills to understand it/or to know what it says