It depends a little on what services you have available in your area. Where I live now I only have the option for cable (coax) or for phone (including a DSL option). Other areas offer FIOS, ATT uVerse, and other more advanced option. When I had a house with ATT uVerse they included a converter that connected COAX to Cat 5/6, and you could interconnect your TV boxes with network cable instead of COAX. It was really convenient because the network cable is more flexible and easier to hide from view in a room.
For connections I would run a minimum of two RG-6 coax cables for cable TV or antenna, and two Cat 5e or Cat 6 network cables for data. If you want to extend the phone also, I would run an additional network cable and use it only for the phone. If you plan to hardwire an alarm, I would also include the sensor wires you will need.
There are several universal low voltage boxes, and you can just add in the connections you need, or you could buy a structured media box that is pre-configured. In one house I bought a setup similar to this one (
https://store.leviton.com/collectio...deo-panel-white-47606-aht?variant=18216125123) that had connections for telephone lines, ethernet lines, and a cable.
In my current house I just bought the phone and ethernet panels separately, and mounted them on plywood. For example, you could use this combo board in one of the enclosures if you only want phone and data.
https://store.leviton.com/collectio...-and-data-board-47609-4dp?variant=18216686723
Bruce
