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PostPosted: Mon Aug 22, 2011 11:35 pm 
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Moved in to a house approx three years ago, BT told us there was no telephone line hence we got them to come round and fit one, there was an old telephone socket on the wall in the lounge but cant remember if it was a master of a slave. The new socket was fitted in the same place and has worked perfectly well ever since... there is also an old BT socket in one of the bedrooms and prior to decorating we desided to remove and make the wall good.
Luckily before I did any thing I thought better double check its not live... and to my suprise it is, then confusion set in as I realised it was a BT NTE 5 master socket and not a slave extention as I would expect.
Some investigations followed it turns out the up stairs bedroom is the true master and the lounge dispite being a master socket fitted by an BT engineer is infact an extention.
This then leads me to think is it worth swapping the BT NTE 5 master in the lounge for a slave socket as it should be a slave obviouly the ring capasitor, surge protector and resister must have some impact on the line, even though im not sure it will give me much beneifit i do wonder if it will improve out broadband speed as its very slow but then we 5 miles from the exchange as the crow flies and about 7 by road so 1mb down stream probably isnt that bad i did do a little bit of testing and when i went directly in to the master socket with the extention going downstairs disconnected i did see approx a 5db reduction in line attenuation but again with line attenuation of approx 62db a 5db reduction isnt going to make a hudge difference.

I've attached a quick diagram

answers on a post card

cheers every 1 :)


bt wiring 2 masters.jpg
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PostPosted: Tue Aug 23, 2011 11:26 am 
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Did the BT engineer not connect the new socket to the drop cable direct?

Is the wire from the bedroom to the lounge actually drop wire (usually black outer and four cores, orange, white, green & black) or is it extension cable with two of the cores Blue/white and white/blue.

You could change the lounge for a slave, but the wires in the lounge would need to be connected, using a push-down tool to terminal 2 and 5. Leave the ringer wire disconnected.

Disclaimer: I doubt it will improve your broadband speed but worth a try for the cost of a slave socket. You would at least have peace of mind that you had tried.


You can always tell a Yorkshireman,
But you cannot tell him much.

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