Is a TAE socket no longer needed?

The TAE socket is connected directly to the router. This can also happen along the path TAE-RJ45-RJ45-FritzBox. However, if the FritzBox is not in the basement but in a living room, then both LAN sockets are occupied (1x input from TAE, 1x output back to the basement to the patch panel and switch). So if it is clear where the router will go, there should be one more socket there.

Otherwise, just add a switch to the patch panel and you're done.

okay thanks! There are two possible locations for the router, but we don't need an additional LAN port at either. Then we can manage without a switch and do it as I described, right?

Or does the router have to be placed before the patch panel because you said the router has to be connected directly to the TAE socket?

You always need the switch, it connects all the ports of the patch panel and is located right next to it in the basement.

Or does the router have to come before the patch panel, because you write that the router has to be connected directly to the TAE socket?

Simple way: From the TAE in the basement directly to the router. From the router to the switch and all connections from the patch panel also to the switch. WLAN is then provided by one or more access points at the desired locations, which simply connect to a free LAN socket. Your idea: From the TAE directly to the patch panel for the specific connection where the router is located. A second cable from the router back through the LAN socket into the patch panel. With the exception of the first port, all other ports of the patch panel go to the switch. This saves you one access point, as the router provides the WLAN there. However, you need one more LAN socket. Both ways work.

Fiber optic is not yet available in our area. What would be different with other providers?

For example, I have Kabel Deutschland. The Fritzbox is supplied via the broadcast wiring, even though I don’t have to have broadcasting in the plan. Internet including telephony, in my case a FritzBox Cable. But it does the same as the analog or ISDN version, so 4x LAN plus WLAN / DECT, FON S0 and 2x a/b. I still have the TAE socket in the wall, but that doesn’t matter. If I wanted, I could get a Telekom connection as well (or from Vodafone via the rented Telekom TAL). It was purely a tariff issue, both would have been copper (although Telekom was slower for me).

Great, thank you very much! But the wiring is the same in both variants, meaning I tell the all-rounder to lay duplex LAN cables from the basement to every living room and install double RJ45 sockets there. And when moving in, I then decide on one of the two variants. Correct?

For example, I have Kabel Deutschland. The Fritzbox is supplied via the broadcast wiring, even though I wouldn't have to have broadcast in the tariff. Internet including telephony, in my case a FritzBox Cable. But it does the same as the analog or ISDN version, so 4x LAN plus WLAN / DECT, FON S0 and 2x a/b. I still have the TAE socket in the wall, but it doesn't matter. If I wanted, I could get a Telekom connection as well (or from Vodafone via the rented Telekom TAL). That was purely a tariff question, both would have been copper (although Telekom is slower for me).

okay, but then the installation has to be done the same way in both cases, right?