Networks can be a little complcated if you didn’t study this aspect of housing. Since all buildings have been renovated, or built from the ground up, all of the network features were taken into consideration. This will include RJ45 for network, coaxial in the closet for television, and why there are no RJ11 jacks.
First, let’s address the RJ11 jacks. Simply put, Verizon is no longer supporting new customers, or moving customers with POTS? system. Since they will no longer support this feature, there is no need to building out and waste infrastructure over. One could assume that they could have been used for the intercom system, but this is very limited in capability, so it still does not make any sense to run telephone line throughout the building or apartments. You can use the ethernet lines to add a SIP? phone, and some phones might require POE? which you can do that in the network closet. You could also use a wifi? phone to connect to the rest of the world. If it was me, I would use my home phone as the intercom phone which will allow me to answer calls from visitors when I am home, and not out.
Next is television. If you want OTA? TV, you would need a smartTV, and the appropriate app. One window per room will have an electrical outlet, and a ethernet line. You will plug the DVR? to the electrical outlet, and to the ethernet. You must have a smartTV or TV adapter if you have a basic TV.
Last is networking. All network lines will run from your jack to the communications room in the basement. Each jack will have an 8 digit number. This number is essential if you wished to have POE, or find a problem with a particular jack. This will be minimal for your needs. The TV Wall will have 5 ethernet jacks. The Office will have 4 jacks, and all other appropriate walls will have 3 jacks.