United Kingdom

 Features of the call centre: 

112 calls are answered on average within 5 seconds, in addition to English the calls are also answered in Welsh and in 170 languages with the help of interpreters. The 112 operator can detect the location of the caller within 1 second and it also cooperates along the national emergency number 999.

Trivia:
 * The curiosity of the call centre between 999 and 112 is that, that if you call 112 you'll get connected to the same national emergency centre: 999, that there's no difference that you may call the different centre by dialing a different number
 * In order to text 999 you must first register your phone as a disabled person via texting 999 the "register" word and then send it, if you want to be able to contact 999 via 112 you must send to 112 the code 18000 to preregister your phone before sending text messages with other contained words
 * According to the latest E-communications household and telecom single market survey, it's been revealed that 18% of British people know they can use 112 anywhere in EU
 * For a better location approximate accuration a system named The Advanced caller Location (ACL) was developed in order to give the 999 or the 999 through 112 an accurate location of the caller