That's your basic 110 punch-down block, wired for phones, with those loopy jumpers connecting all the matching pairs together on all cables.
What do you think you might want to do with it? Each cable terminates at one 8-position clip. You can pull the jumpers out of the slots on a clip to disconnect that cable. Using a standard punchdown tool with a 110 blade, you can then connect your own jumpers to reconnect things as desired, for instance to wire up a home network.
To keep CAT 5 performance and allow 100Mbit Ethernet, keep jumpers as short as possible, avoid sharp bends, and keep the pairs twisted together as close to their terminations as possible.
I realize that's a fair bit to digest, so feel free to ask any more specific questions you might have.