Originally Posted by tamuk
Thanks for the inputs.
Below are new things which I found out by taking the jack plates out of the wall. Each plate has Cat5e connector and opening for another jack to mount. Behind each plate i did see blue ethernet cable besides yellow ethernet cable which is connected to the existing jack.
Oh, that's good news! Couldn't make it out clearly in your first set of pictures, but this is even easier now. You've got several blue cables there not even hooked up. So no need to move the yellow wires - just punch down the blue ones onto the network block, and add RJ45 keystones for the room jacks.
The issue is if i only want to connect one room the cables are not labelled. Is there an easy way to figure out which cable is going to which room?
With a volt/ohmmeter, yes, you can strip and tie a pair together at the room end and check for continuity back at the box. I'd just go ahead and punch all of them down and put jacks in the 3-4 places you've got wires. Then you can easily test your work with a cheap network tester (or just connect a device and see which ports light up!).
Please take a look at the drawn picture for the network block setup and let me know why the one of the coax cable is on the network block and other one is split and attached to AFL telecommunications Splitter filter. Also attaching the pictures so hopefully you will get an idea.
That's a DSL splitter, wired to split the phone from the DSL modem. The black coax isn't connected, it's just being used to support the wires, I assume...
My plan is to add CAT 6 jacks to all the plates in addition to the existing CAT5e jacks and connect all the Blue ethernet cables from behind the plates to the jacks.
Unless those blue cables are cat6 (highly, highly unlikely), you should use cat5e keystone jacks for these connections. Cat6 keystones would be a waste of money and will just make things more difficult.
I am not sure about the network block connections so would appreciate your help on that.
Punch down the blue cables on the network block. Then you'll use RJ45 patch cables to an Ethernet switch. Back to the diagram on page one of this thread...