In the 1st photo you can see:

The internal mechanisms (panel equipment) for the Smart Home system properly configured within an electrical panel (photograph taken from a residence in Glyfada).

In the 2nd and 3rd photo you can see:

How a voice data network should be developed, how the space is properly used, the proper marking and interconnection (photograph 2 taken from a floor subdistributor of a hotel in Athens, photo 3 from a distributor – rack of a small company in Athens).