Have put a filter on a BT ringer i.e. it's not a phone just a ringing device as my father can't hear the phone unless he happens to be passing when it rings.
Problem is when the filter is added the ringer does not work, does it need a filter. I don't think so as it does not carry any signal down the line but don't want to attach it in case it knackers their connection.
So am I right & it's ok to connect it without a filter or will they have to try to find another phone my dad can hear.
Thanks in advance