ᐅ Is a telephone connection box still required?

The wiring always needs to be done from a central point. It does not matter whether this is in the basement or on the ground floor.

Okay, please excuse my lack of knowledge, but just to be sure: If I place the central location for the patch panel, switch, and router in the utility room on the ground floor, what type of cable do I run from the main distribution frame (MDF) in the basement to the patch panel on the ground floor, and what kind of outlet should I install in the utility room for connecting the patch panel?

The telecom guideline differentiates between a "DSL cable" and a "duplex LAN cable."

And, an addition: If the utility room on the ground floor now becomes the central location from which all LAN cables branch out, then an additional conduit should be installed from the basement to there, considering fiber optics or other technological developments, right?

Martin.. schrieb:

If I place the central location for the patch panel, switch, and router in the utility room on the ground floor, what type of cable should I run from the main distribution frame (MDF) in the basement to the patch panel on the ground floor, and what kind of outlet should I install in the utility room for connecting the patch panel?

You will need an RJ45 outlet in the basement and another one in the utility room to bring the "DSL" signal to the router. Connect the MDF to the outlet in the basement, and the additional outlet in the utility room to the router. The output from the router and everything else will then connect to the switch.

Martin.. schrieb:

If the utility room on the ground floor becomes the central point from which all LAN cables run, should an additional conduit be installed from the basement to this room in consideration of fiber optic or other technological developments, right?

You can do that, but you probably won’t use it. It would only be relevant if you install fiber optic cabling inside the house. This is unrelated to "fiber optic internet" which ends at the main distribution frame (MDF). From there, the connection continues in the traditional way using copper cables. It’s better to install a double outlet between the basement and the utility room; that should be sufficient as a backup.

Fuchur schrieb:

This has nothing to do with “fiber-optic internet,” which ends at the APL (HÜP) and continues from there over traditional copper wiring.

But only if the fiber distribution point (GF-TA) is installed right next to the HÜP. If the cable route is properly prepared, you can have the GF-TA installed wherever you want. Most providers include 20m (65 feet) of fiber optic cable inside the house.

Martin.. schrieb:

Then there should be an additional empty conduit installed from the basement to that point, considering fiber optics or other technical developments, right?

That’s definitely not a disadvantage. But just search online to see what requirements the fiber specialists have for the cable route—pipe diameter, pipe fittings, bending radii, and so on.

hanse987 schrieb:

I would approach this with a bit more planning.

- Basement: Should the patch panel, switch, and other devices be mounted on the wall, or should everything be installed in a network cabinet?
- Living areas: A double outlet per room is already quite good, but the TV or office might need more. This way, you can avoid adding another outlet later.
- Access points: You can of course connect them to a standard network socket or designate a special location, for example, high on a wall or on the ceiling. With PoE, no power outlet needs to be nearby, but these APs are more from the enterprise segment. You should have at least one access point per floor. The position depends on the floor plan.
- Cable installation: The ideal solution is to run network cables replaceably inside conduits. Nothing is more future-proof than a sufficiently sized empty conduit.
- Patch panel: Always choose a patch panel with a few more ports than the number of cables arriving. Over time, you tend to add more devices.
- Auxiliary rooms: Besides living areas, don't forget to provide network connections to hobby rooms or the garage.
- Wi-Fi in the garden: If desired, at least prepare for it, because it’s not always guaranteed that Wi-Fi from inside the house will reach the garden.

This is technically the right way to do it if you want to do it properly. Anything else is more or less a makeshift solution, and if you can plan everything from scratch anyway, this is the way to go.
Take a look at the Unifi access points—they come from the business environment but aren’t too expensive. Install one on the ceiling in the hallway on each floor.
They get power via PoE. In the basement, have your patch panel, router, and switch. You can provide PoE power to the access points via a PoE injector or a small PoE switch.
Remember to run LAN cables to the terrace (for a possible outdoor access point), doorbell (in case you want to install a smart one later, also PoE), and possibly for PoE cameras (if you want outdoor video surveillance).
I don’t think a wallbox is necessary; many have Wi-Fi. But it’s something to consider.