has anyone tryed this?improving broardband speed

tomstickland

It's got to be worth removing redundant wiring.
I'm doing pretty well anyway though; 7.6MB/s.

Mr_Meanie

Yes it can work very well, I did it about 3 months ago, my speed went from about 2mbps to 4mbps over a few days (line training).

The only thing to remember is that if you do screw up your BT connection BT would charge you at least £120 to come and fix it!

creepylittlemonkey

Yes, its always good to take lots of photos of the inside of the socket and note where each individual cable is going before you change anything. I can't really see how anyone could accidently break their master socket to such an extent it requires a BT engineer to come out though - its a really simple device and all of the components are hidden behind the main panel which you don't need to remove anyway.

Lord_Gardener

We've got an old LJU master from mid 80's which has wiring to each of the 6 connectors.

1 Green/white
2 Blue/white
3 Orange/white
4 White/orange
5 White/blue
6 White/green

Pairs of wires - same colour - at each connection point (I'm guessing in from BT line and out to extensions?) Is it worth disconnecting all the baggage? This socket is in our hallway and has no phones or PC connected to it - they're all connected by extension sockets!

Lord_Gardener

Thought I'd bump this just in case it was missed!

rmg1

MercilessKiller wrote: »

A LOT of websites recommend doing the above and say it cuts out a lot of CRC errors! I was planning on doing it next weekend...

Can you let us know if this actually worked?

stevemcol

Am I right in assuming this is not applicable if I already connect to the master and have no extensions?

birchvale

I'm also paying for 8M speed but only getting 1.8meg - and am only 150meters from exchange! BT engineers came and can get 7.8meg to my home hub but both my PC's only give 1.9meg. Why ? PS 1. I would not mess with BT wiring either or u will have to pay for any service visits. PS 2. to add insult to injury i have BTvision (TV bit like SKy Plus) service with its pvr box but without running 15 meters of ethernet cable from hub to V+ box cannot use it as the hub needs to be near BT master socket which is in another room.

symy@nufc wrote: »

just seen this has anyone tried it?

Improving your BT Line based Broadband Speed (United Kingdom)

This cure works whether you have Linux, Mac or Windows!
Modification of this type to your extension wiring is quite legal in the UK.

May 2007:

For the last few years I have had broadband based on a BT phone line. First with AOL silver (1 meg) then BT Total option 1 ("up to 8 meg").
When I went to BT Total, they supplied intelligent modems (BT 220V was provided, then I obtained a BT Home Hub from ebay. Modem intelligence means that the modems listen to the connection and determine the fastest stable speed that the exchange is happy with. The Home Hub is notoriously conservative. The alternative to managing the speed is an unstable connection which is what I got with AOL 1meg. Although I live 3 miles from the exchange and the line is rated at 1.5meg at that distance, with intelligent modems the stabilised speed always settled down to approximately 500k (half a meg). I was not happy - Not because I noticed any real slowness, because i'm not a gamer or video streamer, but it was just the principle of the thing - I paid for 8 but got only 0.5!

Part of the advice from BT is to test the modem with all the house extension cabling unplugged, with the modem in the master socket for 3 days - rather difficult without a wireless modem. This would prove that the internal wiring was indeed at fault. However neither BT nor AOL ever gave the reason for their preference for their customers to work at the bottom of the stairs where the master socket invariably lives, instead of in a sensible room. Indeed I believe it has contributed to the popularity of unnecessary wireless modems.

THE FOLLOWING CURE LIFTED MY BROADBAND SPEED FROM 461K TO 2.8MEG - SIX TIMES THE SPEED!!

Some web research I did (Google) came up with the theory that the "bell-wire" is the cause. Now the Bell Wire is the third wire (orange/white: terminal 3) used in the standard BT wiring that was introduced in the 1970's when DIY extensions became legal, and BT relaxed their monopoly on supply of phones.
From under the road or along a telegraph pole, your house is served by just TWO wires. This third "bell-wire" is generated by the BT master socket and enables actual bells on old type phones to ring using the 50 volt AC ringer signal. Modern phones have electronic ringers which do not need the bell wire. Leaving the bell wire in place creates a huge long antenna which picks up radio frequency (RF) interference all over the house. The two conductors that carry the voice and DSL signals are a "twisted pair" which carry current in opposite directions (from master socket to extension socket and back again) so the RF interference cancels itself out. The unpaired bell-wire cannot cancel out the RF.
There is also another redundant (white/orange; terminal 4) wire which has never been used by BT on simple domestic wiring. Similarly if you have 6 wire cable with a pair of green/white conductors. On standard domestic phone with broadband and ADSL filters you don't need any wires apart from the two main conductors, blue/white and white/blue on 2 and 5.

The cure is to disconnect all wires in terminals 3 and 4 at all extensions, and more especially at the master socket. This is because the bellwire will direct RF through the ringer capacitor to the BT B line. Capacitors have lower impedance for higher frequencies and pass high frequency interference straight through.
If you have the removable faceplate master socket now provided by BT, disconnect the wire(s) from the removable part. You are not allowed to fiddle with the wires in the fixed part of the master socket.
Leave just TWO WORKING CONDUCTORS on terminals 2 and 5, (white/blue and blue/white.)
If you, like me, have an old GPO phone with a bell, the ADSL filters incorporate a ringer capacitor so it will still ring. Modern phones don't need it anyway.
Master Socket (diagrams courtesy WPP)

See how the bell-wire on terminal 3 connects to BT "B" via the 1.8 mf capacitor which has a low impedence to higher frequencies.
Standard domestic BT wiring - Disconnect wires at X.

DISCONNECT ORANGE CABLES ON TERMINALS 3 AND 4!!

ONLY TERMINALS 2 AND 5 SHOULD BE USED.

That will reduce RF interference to a minimum and increase your stabilised throughput speed. BT's response

It would seem that BT may be bringing out a new faceplate

espresso

rmg1 wrote: »

Can you let us know if this actually worked?

Can you let us know if you have actually bothered to read this thread?

:rolleyes:

MercilessKiller

rmg1 wrote: »

Can you let us know if this actually worked?

It worked.

I no longer get drops (though upgraded router firmware too) but I definitely get less CRC errors. Still get some but not as many Line speed improve about a meg