Open the ports and look. Probably running cat5e everywhere as easy and just using blue/white for phone.
If you want to use you will need to figure out each cable run as they are probably twisted in parallel so you get phone everywhere.
You may have to do some creative networking. Couple of small switches where most of the cables come back to but it could save trying to get access to run new cables.
You will need both an electrician or someone who can terminate to rj45 sockets and then someone who can map that out and design a network.
Open the ports and look. Probably running cat5e everywhere as easy and just using blue/white for phone.
If you want to use you will need to figure out each cable run as they are probably twisted in parallel so you get phone everywhere.
You may have to do some creative networking. Couple of small switches where most of the cables come back to but it could save trying to get access to run new cables.
You will need both an electrician or someone who can terminate to rj45 sockets and then someone who can map that out and design a network.