Provider equipment of our village. How is it arranged?

Question

Computer networks

Hey!
Just the other day, a fiber-optic communication line was extended to our small village, but so far they have not given access. At this time, we catch the Internet through a radio relay. I myself am an ordinary guy, very interested in technology and decided as a hobby to study local equipment that gives access to the Internet.
Unfortunately, there is no physical access to the building where the equipment is located, but you can visually look through the window. The other day I studied what is there and made a list.
Rack structure:

1. Digital PBX
   
2. Cross optical №1
   
3. Cross optical №2
   
4. D-Link 24 port switch
   
5. Multiplexer (DSL)
   
6. SHDSL modem (for connection to radio relay station)
   
7. Power Supply
   

Some organizations (school, garden, shop, etc.) seem to have used FTTx technology, extended optics to the building, where customers (school, garden, shop, etc.) have DGS-1100-06 / ME switches. In the center of the village there is one cable box for optics. The FOCL that goes to us has already been connected to the trunk, but has not yet been given access.
Questions:

1. Why are the indicators on the switches (DGS-1100-06 / ME) of clients not lit when connected to the trunk line?
   
2. Why two optical crosses?
   
3. SHDSL modem and multiplexer (DSL) no longer needed?
   
4. Why was the optics connected not directly to the DSLAM? Connected via 24-port D-Link.
   
5. How are all these devices connected to each other?
   
6. What did I miss when describing the rack? Or what was wrong?
   
7. How do they give access if all the equipment is already configured?
   

Thanks)))))))))))

Answer 1

Why are the indicators on the switches (DGS-1100-06 / ME) of clients not lit when connected to the trunk line?

Probably because what is included in these ports is not included in the electrical network. Another option is that the switches themselves are not plugged into the outlet.
Usually one cable - one cross. This means one cross for the input cable, the other - for the cable towards the clients.
Far from a fact. Where it is cheaper to give FOCL - they will give it to them, where not - DSL.
Lots of different ways. Fiber optic, copper, through a router or switch, etc.
Setting up equipment at one site is not enough. You also need to launch billing, organize an intra-house distributed network, and buy enough uplink.

Answer 2

It all depends on what the designers have piled up there and the installers will pile up, everything will dance from this