1st, you have to take the official Swisscom WLAN-Router Centro Grande
2nd, you have to install the Router at the central distribution room for all connections. I hope, there is a patchfield with all connections to the rooms and also the landline connectionā¦.
3rd, you have to patch all conections from the Router ports (4x LAN and 1x phone) to the desired ports of the patchfield
4th, if you dontā have enough LAN-Ports at the Router, you have to add the official 5-Port switch from Swisscom to expand the numbers of LAN-Ports
5th, for better WLAN connections in the whole house, you can install some additional WLAN-APs in the desired room(s)
good luck, POGO 1104