How do i connect a SD2 dialler?

I have an Accenta G3 alarm (Accenta 8 Mini) and i have just purchased a speach dialler for it (SD2).

I need some clarification on how to connect it. Is the optima panel -ve trigger polarity?
I assume i power the dialler by connecting a link from the 12v and 0v in the alarm unit to the dialler?
can i take a link from the alarm panel tamper terminal to the dialler tamper position?
Finally.... Is the trigger input position B and where do i take the link too...i have a strobe or bell terminal....do i take the + too position B and the - to 0v.
Thanks for reading and i hope you can assist