Tech Support > Computers & Technology > Internet & Broadband > ADSL & external bell wiring. Ping kraftee.
ADSL & external bell wiring. Ping kraftee.
Posted by Peter Crosland on October 10th, 2007


I have been to a friend who has suffered low line speed for some time. On
checking the BT installed NTE5 master socket I found that the external bell
was wired into the system behind the wall mounted part of the socket i.e.
before the test socket. Is this correct and how should it be wired? Maybe
kraftee can answer. TIA

Peter Crosland

g6jns@yahoo.co.uk


Posted by Mike J on October 11th, 2007




Peter Crosland wrote:
Thats wrong. I assume you mean across the A and B screw terminals.
Firstly nothing should be connected across the line - thats BT property.
Secondly, the bell will be short circuiting the line and dropping the
ADSL signal level. Also one leg of the ADSL signal will be extended
outside causing unbalance.
Any telephone equipment should be connected via the 'phone' side of a
filter.
In your case that sounds difficult as the wire to the outside won't have
a BT plug on it to plug into a filter.
Ideally you should install a filtered faceplate with the bell connected
to terminals 3 & 5 at the rear of the faceplate.
Alternatively get an old BT phone cord and connect the bell between the
white and green wires and plug it into the filter. It must be a decent
quality filter with a 'ring capacitor' inside. A £10 ish one.
You may have to experiment slightly as, if the incoming pair is the
wrong way round, the bell may have to be on the wrong leg.
I know you shouldn't be touching it but the -ve 48v leg should be
connected to the B screw terminal (Battery on B)

Mike

(Hope this is right Kraftee!!)


Posted by Peter Crosland on October 11th, 2007


Mike J wrote:
Thanks for that Mike. Just as I suspected, and as wired by BT! The external
bell was fitted by them some years ago. I think I will suggest that they
come and fix it so that the line works properly with ADSL. It will probably
mean an argument, or series of them, about who should pay. However, this was
how the BT engineer did the job so it seems very clear they should fix it
FOC. Before anyone quibbles it was pre Openreach as well!

Peter Crosland

g6jns@yahoo.co.uk



Posted by kráftéé on October 11th, 2007


Peter Crosland wrote:
Yep you there alright, except it wouldn't just unbalance the circuit
it would present a virtual short at the frequencies DSL use.
& I didn't even have to touch my keyboard..

One problem with your logic (& it's a biggy) even if it was done by a
BT engineer x years ago, it will now be an Openreach engineer who
visits. Now I know it appears to be the same shit different shovel
but it is a big difference & you will not get it done free of charge
(arguments & complaints to higher levels will most probably get them
squashed but they would be raised, the field engineer has no say in
the matter, if they don't there is an office which checks all clears &
will raise one against your job & the engineer will get disciplined at
one level or another). If you take your time & think it thru (buying
a faceplate filter would make it a lot easier) you aught to be able to
figure out a plan yourself. At the very worse you may have to abandon
the external bell. If you go that route try to do so at the switch,
which should have been fitted.

Hope this does make some sort of sense.



Posted by Eeyore on October 11th, 2007




"kráftéé" wrote:

Perfect sense.

Just destroy the evidence.

Graham



Posted by kráftéé on October 11th, 2007


Eeyore wrote:
You'd be suprised just how many don't & as for electricians thinking
(running extensions as a loop circuit , not a spur) I just give up
(not using choc block type connectors would help as well :-( )



Posted by Peter Crosland on October 11th, 2007


kráftéé wrote:
I much appreciate your comments. I have anticipated this and my friend is
briefed accordingly. There is no chance of the outdoor bell being abandoned.
Furthermore he is a retired barrister and I am sure well able to fight his
corner with Openreach!

Peter Crosland

g6jns@yahoo.co.uk



Posted by kráftéé on October 11th, 2007


Peter Crosland wrote:
Good luck PeterI'm about to join battle as well but with a different
issue, problem is, as I may have said before I have to be seen to go
thru the motions before taking that final step



Posted by Mike J on October 12th, 2007




kráftéé wrote:

Now would I 'chat up' an OR guy and get a handful of crimps?

Surely not!

Mike


Posted by Eeyore on October 12th, 2007




"kráftéé" wrote:

Oh my !

They really do such things ? Oh dear.

Graham



Posted by kráftéé on October 12th, 2007


Eeyore wrote:
Using burglar alarm cable is the capital crime though...




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