Excuse me, how can the hotel connect many rooms in series with one optical fiber so that each room can access the Internet?

It's just a wiring problem. First of all, optical fiber Internet access, if only one IP is allocated, use a router, and then connect a switch to allocate the intranet IP of each computer from the router; If you give each room an IP, buy a switch and enter the IP address on each computer. Wiring should be designed reasonably. After the network cable comes out of the photoelectric converter (router)-switch, it should be pulled to every room. Followed by the telephone line. This is very simple. Just contact the communication company and integrate the telephone line jack and RJ45 jack of the network cable into a patch panel when wiring. As for the plug-in, this kind of plug-in is sold in computer city or technology market.