What is the alternative Internet network SİTAR?

Question

Computer networks

On the Internet, I came across a site with a post ... haqqin.az/news/57189
It says ...
"Heydar Aliyev International Airport uses an alternative to the Internet SİTAR network"
Question ... What is this alternative SİTAR network ??? How much I looked on the Internet I didn’t find anything ...
There is a family of Sitara chips / processors, but this is something else ...

Answer 1

SITA is a huge company and telecom for airports. SITAR is the oldest specialized network in which flight control systems are spinning. Passenger booking, flight check-in, baggage, etc. - it's all there. However, it is really ancient and outdated, tailored for certain tasks of airports, nothing more.

Answer 2

There are a lot of these alternative networks - because they began to develop even before the popularization of the Internet as a worldwide network. Each army has its own network - for communication with headquarters, which is not connected to the Internet in any way and can function according to other principles (which without documentation, not every hacker will figure it out even if he gets access).

Answer 3

Perhaps something similar to the European AFTN / CIDIN: