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Old 30th Aug 2018, 8:58 pm   #1
scottyb
Diode
 
Join Date: Aug 2018
Location: Canterbury, Kent, UK.
Posts: 3
Default British Telecom C2 klaxon and control box

Hi,
I’ve recently acquired an old British Telecom Klaxon compete with a cast iron control box fitted with a mercury switch and PO3000 type electro magnet relay. What I want to know is if it’s possible to use this system as an external ringer for my phone. Somebody told me it might not be possible as the phone system is different to what it used to be. The unit has 4 coloured wires entering into it, green goes to an earth point on the cast iron box, Brown is not connected to anything, and orange and blue are connected to one terminal each on the PO3000 relay. I assume that the relay is activated when an incoming call is detected, putting a voltage through the relay which in turn tips the mercury switch setting off the Klaxon. What I need to know is if it’s possibly to wire in to my phone system and if so, which wire goes where?
Thanks, Scott
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