wiring a external bt bell

18 Mar 2010
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United Kingdom
hello all,

how to wire a bt external 80d bell to a rj45 phone point?
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The BT80D doesn't have its own bell capacitor iirc so it cannot be fed directly from a RJ45 phone jack as these only use the two centre pins for the phone line.

You might be able to connect via a RJ45 to BT adapter as this would include capacitor. Otherwise wire capacitor in series with one of the wired to bell.
Good advice from here.


Some micro-filters have a ringing capactor so if you cannot wire back to the master socket then you can connect the bell to pins 3 and 5 of a lead that then plugs into a micro filter in a extension ( slave socket ).

If you use a flexible ( stranded ) lead you will need to to be careful when screwing down. A boot lace ferrrule on the strands will help to get a reliable connection.

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