If you don’t know (and I myself only found out this morning), then you can read about it on Wikipedia in Russian or in English (I recommend English: there’s a more detailed article).Last year, Open Systems mentioned that when preparing for the 2014 Olympics, such a network will be deployed in the west of the Krasnodar Territory, and will cover not only Olympic facilities, but also all settlements and highways
In short, this is a mobile radio standard specifically designed for negotiations between government intelligence agencies, emergency response services, police, firefighters, ambulances, railway workers and other transport workers, as well as the military. As such, TETRA provides fast communication (less than half a second), considerable distance from the base station (several kilometers), the possibility of negotiations between subscribers in the absence of a base station, as well as working at high speeds(over 400 km / h).
Butin that fiber - gigabits and gigabits! Who knows: maybe, not only the newly created Tetroi will be used, but also the populationwill somehow getsomething .
Source: https://habr.com/ru/post/82186/