Telecommunication line J-Y(ST)Y 2x2x0.8 in concrete

Hello,

unfortunately, I have not found an answer to my question.
I want to lay a telecommunications cable J-Y(ST)Y 2x2x0.8 on the suspended ceiling.
The cable is to be used for the window contact switches,
Does the cable necessarily have to be laid in a conduit when the concrete comes, or can I lay it like this?

Thank you very much

I think the question is irrelevant when you compare the risk (window contact failure) with the effort (a few euros), right? Remember, there are construction workers at work. With iron, angle grinders, boots, concrete pump, and shovel. Wrap your cables in cotton wool if possible.

Remember, there are construction workers at work. With iron, angle grinder, boots, concrete pump, and shovel. Pack your cables in cotton wool, if possible

Funny... They simply cut off the empty conduits for me

But no, I would not lay this cable in the ceiling.

I would either use J-2Y(St)Y or A-2YF(L)2Y.

But why do you want to lay the cables in the ceiling already now?

Funny... They simply cut the empty conduits for me. But no, I wouldn't put this cable in the ceiling. I would either use J-2Y(St)Y or A-2YF(L)2Y. But why do you want to put the cables in the ceiling already?

The electrician said that we should put as much as possible in the ceiling so that later we don't have to lay so much across the rooms. I have now installed it in empty conduits.