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The faceplate has nothing to do with the problem (though it can - in a backhanded way be part of the solution) so I'm concerned that people will get one thinking it will automatically speed things up. Remember that once the signal has been split, the phone extensions (wires 2 and 5) no longer have an ADSL signal, so you'll need to find another way to pipe the ADSL bit of the signal round the house. For some, this could be a problem.
In fact, if you buy a normal BT master socket faceplace and leave the extension wires disconnected, you'll still get the high speeds that you see in the test socket. The problem is that the extension wires coming out of the master socket act as an aerial, which can feed back RF into the unsplit signal. If you need proof, try connecting extension wires to 2 and 5 in the master socket but leave the other end disconnected. "Surely, that'll not affect the speed?" I hear you say! But it does - the speed drops.
The way around it is:
a. Split the ADSL signal at the master socket using a master socket spliter (yes, ADSL Nation's is a really good one) and pipe the ADSL signal round the house using twisted pair cabling. Additional house wiring may be required.
b. Use twisted pair (cat 5e or 6) instead of ordinary phone extension cable to minimise the RF interference and split it at the extensions instead of the master. Additional house wiring may be required.
c. Stick your PC next to the master socket and split it there using an "ordinary" splitter (again ADSL Nation's xf1e is excellent). Then you don't need to rewire the house!
d. Split the signal at the master socket using an "ordinary" splitter and use wireless to connect the PC to the router. Again, no rewiring needed, but you're heavily dependent on braodcasting 802.11 to all and sundry!
HTH
M
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