Which communication lines should be provided during renovation?

According to some DIN standard, empty conduits are required for media cables. There was a thread about it recently. Try searching for one by . Or maybe she can help directly...

According to some DIN standard, empty conduits are required for media cables. There was a thread about it recently. Try searching for one by . Or maybe she can help directly...

Here is my thread about it, somewhere there the DIN was also quoted.
In the end, I forced my electrical company to lay everything in conduits.

About the thread itself: We have installed 1 Cat7 LAN socket in every room. Both of us are IT people, but I don’t see the need for CAT8 coming anytime soon either. If you want, you can certainly do it, but that’s a crystal ball question, so it’s pointless to discuss. In the office we have 2 duplex sockets (so 4 ports), and in the living room one duplex socket (2 ports). All other rooms only got one port. Duplex socket, but only one occupied. Network via cable is actually only important for us for playing first-person shooters, or in the office where we still want to build a NAS. Everything else mostly runs, and increasingly more reliably, over WLAN. We had coax cables pulled from the attic to the living room "just to be safe," but we’re not getting a SAT system and it was probably money wasted. I don’t think we will ever get so old that we’ll have a SAT system installed after all. We completely skipped telephone cables. We also didn’t order a Telekom connection because we are getting fiber optic installed. On the landline, only Mom calls anyway, and that can be done via VoIP.

IMHO everything is slowly moving towards SPE anyway, I wouldn't install CAT8, at most CAT7.

Then the cables will probably have to be laid in conduits. So it will probably be CAT7 and coax. Do you think two M25 corrugated pipes per room are enough if I want to pull through one CAT7 duplex cable and one coax cable? Regarding this and the feasibility of pulling through, I am most concerned.

Yeah, why not? You can test that when laying the corrugated pipe. It also depends on factors like the bending radii. If necessary, you don’t pull through duplex but a single cable.

Maybe in 20 years the Cat13 cables can be laid completely differently. For example, all my living spaces adjoin an empty chimney shaft. Or under the baseboard, etc. Anyway, Cat7 should really last a long time, maybe forever.