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Old 6th Jun 2019, 12:58 am   #2
Graham G3ZVT
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Join Date: May 2010
Location: Greater Manchester, UK.
Posts: 18,675
Default Re: RTT 56B not ringing.

I may be way off here but is the telephone service from the hub presented on a standard BT socket, or is it a small RJ11 and they have supplied an adaptor?

Depending on how the Belgium phone was converted, it may need a capacitor to couple the ringing signal on pin 3 of the plug, that would explain why your modern phone rings.
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