Broadband Related > Telephony Wiring + Equipment
Redundant master socket
badfish99:
Hello,
I've got 2 master sockets, both 'star-wired' to a junction box outside the house. The wiring is very old and not twisted-pair. One master socket I'm using for phone and VDSL, the other is redundant.
I'm far from the cabinet and get 15Mbs down, 4.5 up, so I'm looking for any possible improvement.
The brown/green bell wire pair is connected at the unwanted socket but unconnected at the main socket: the BT installer left it like that when he upgraded the socket when I moved to VDSL. These wires are crimped together inside the junction box.
I tried disconnecting the brown wire at the redundant socket and my upstream fell from 4.5 Mbs to 2.5. I'm guessing that disconnected wires are acting as antennae and then coupling the interference to the non-twisted signal wires.
If the wire to the unwanted socket accidently broke near where it leaves fhe junction box (it is very exposed and just sticky-taped to the wall), would this be guaranteed to improve my uplink speed? Or is there any danger that things would get worse instead of better?
jelv:
My thought is that the BT installer didn't do the job properly when he changed the socket - he should have disconnected the second socket. I'd suggest that your supplier should be insisting they come back and finish the job - at no charge to you.
badfish99:
I talked to my ISP about it: their position is that BT/Openreach will say "it's working, so any change will be chargeable".
burakkucat:
If you will take a series of clear photographs -- starting at the external junction box, then proceeding to both sockets -- and post the images to an external site, for our viewing, it might be possible to guide you as to what could be done to rectify matters.
badfish99:
Photos will have to wait until I can turn off the internet and unscrew everything. In the meantime I've attached a bit of ascii art to show how everything is wired up. That won't be obvious anyway from a photo, as the junction box is a rat's nest inside (actually, a spider's nest).
I've just read some advice that surge suppressors in old master sockets will interfere with vdsl. I suppose my unwanted socket contains one of those.
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