BT Infinity, Micro Filters and Intruder Alarms

I've had BT Infinity for a while now and I realise that you no longer need micro filters on slave sockets as it is all filtered in the new Master Socket but I have a BT line terminal block installed by BT for my intruder alarm that bypasses the Master Socket altogether and subsequently isn't filtered by it.
When I had normal broadband there was a filter in the Alarm Control box (there still is) and had no problems with the alarm communicating with the central station but since I have had BT Infinity installed the alarm is struggling to communicate.
My question is: Is the filter in the BT Infinity master socket any different to a standard broadband filter? I spent an hour on the phone to BT Infinity support in presumably India and they couldn't answer the question and said they would get someone higher up to give me a call the next day. That was 3 days ago so I am not holding my breath on that one.

that sounds like BT Redcare you have on your alarm. You probably need to speak with your alarm company as they should  be up to date with using Infinity & Redcare. It is often put on a separate line so voice fax doesnt intefere with it. I used to work in the alarm business.
Do you have a maintenance contract on the alarm, if so they should sort it out.

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