You can us the bell trigger output to connect the dialler for INTRUDER.
If you require a PA trip then you need to use an output.
On the 2-20 you will use the trigger header.This will require a ribbon connector for you to use the outputs to trigger the dialler .
If you are using a Rio for zone expansion then you could us the outputs on the Rio expander to trigger the dialler
Not a reply to your question per-se, but have you considered Selfmon? It's an add-on for about £50 which lets you self monitor your alarm for £1 per month. It gives you full control of your panel from your phone, or internet etc. Quite a few happy customers on here, including me.
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