Electrical planning / Network planning for new construction

We have now reached our electrical planning / network planning. I have tried to read up on this... but I don't quite understand the matter.

What I have planned are network connections in the living room, both children's rooms, and the bedroom. These should converge in the utility room, as the router will be mounted on the wall there.

However, the telephone is supposed to be in the living room... but the TAE socket is also located in the utility room.

Problems so far:

Usually, I connect the cable from the TAE socket to the router and this is connected to the base of the telephone. Would that mean the base is then also in the utility room? Or how do I get a connection into the living room?

If the network cables from the rooms converge in the utility room, do they go into a switch? And is this switch then connected to the router? Many have a patch panel in between... what is it for?

You can also use the "normal" network sockets for telephones...data cables remain data cables...

So you plan a network socket in the living room for the telephone and the end is then connected to the telephone socket in the utility room. In other words, you are just extending the cable.

The patch panel is there to equip the fixed installation cables with RJ-45 jacks...it is uncommon to impossible to equip the installation cables (which are then inside the walls) directly with RJ-45 plugs.

The loose ends are terminated on the patch panel and from there connected to the switch/router using "normal" network cables.

I assume that you will have a DECT phone. You probably won't get a telephone connection without Voice Over IP (analog or ISDN) anymore, so it's actually quite simple. You connect a router that already has the DECT phone system integrated to the TAE socket in the utility room. So you no longer need a base station with a cable to a TAE socket in the living room, but only a charging station. You can place this anywhere you have a normal power outlet available, for example also in the living room. Of course, multiple phones are also possible. A permanently wired phone would have to be connected to the router, in your case in the utility room. If in doubt, you would have to run cables from there again to the place where you want to set up the phone. This can also be done via network cables, so if in doubt just plan a few extra cables as long as they can be easily laid. The patch panel is basically a collection of network sockets. You can't just let the network cabling come out of the wall and attach a plug for the router there; at least that is not professional. Therefore, the lines are terminated on a patch panel and from there connected to the router or switch with short patch cables. The switch is usually necessary because your router usually won't have enough ports, basically a kind of distributor.

Then it's enough for me to put the can in the utility room and then make calls using the DECT function. Thanks!

About the patch panel
Now I understand... I couldn't make sense of the explanations I found so far. Thanks here too!