I'm sure someone will know this - Google is a bit of a minefield.
Home setup was as follows, and was working fine - fibre broadband:
BT router -> Cat-4 cable into wall port -> Cat-5e internal wiring -> Cat 5e cable into BT hub -> Cat-4 cable into BT TV box.
We had a local BB outage, now fixed, but I ended up phoning BT last week because BB speed had drastically reduced (on wifi - we don't use wired for the laptops). Their advice was to put the hub as close to the router as possible and connect it using Cat-5e, so I now have the following:
BT router -> Cat-5e cable into BT hub -> Cat-4 cable into wall port -> Cat-5e internal wiring -> Cat 4 cable into BT TV box.
Wifi speed is much better, but the BT box won't now connect to broadband. I've tried testing the various components with my laptop and the issue seems to be the internal cabling not connecting.
So, finally, the question - does the hub -> wall port cable need to be Cat-5e, or all the connections need to be Cat-5e? I didn't think that it should be an issue, except that it would be a bit slower with Cat-4 in the mix and it was working previously.
I don't have any test equipment to see if the internal wiring has developed a fault, but it would seem unlikely, as all I've done is change a couple of plugs. I've also only got 1 Cat-5e cable, or I would have already tried that - I might try and borrow a couple to test the theory.
Thanks,