There is no mention of changing triggers in the Accenta engineer's manual.

First off you need to get to a know state. 

I'd disconnect your triggers and meter what they do when. 

Maybe a picture of the current wiring etc before you disconnect 

5 hours ago, Derek Foote said:

I changed the four inputs triggers on the speech dialler from active low (LED on) to active high(LED of). All that happened was that the speech dialler instantly went in to the dialling sequence.

So it means it was correct in first place 

 

What is your trigger connected to?

I think you have trigger on the set terminal when it should be connected to the bell - minus trigger , it will dial when bell triggers 

I have taken some photos of the wiring, I hope this helps to understand what I have done.

Photo 1, overall view of the Accenta G4 panel

Photo 2, Outside box connection on panel

Photo 3, connection to outside box

Photo 4, connection of speech dialler on panel

Photo 5, connection to speech dialler

Photo 6 wiring diagram for outside box as shown in Accents manual

Photo 7 wiring diagram for speech dialler as shown in speech dialler manual

Photo 8 connection of keypad on panel

Photo 9 connection to key panel

 

I have just looked at what i have sent and it looks like they have not been sent in the sam order that i loaded them. will try and sort them out.

I'd try 1 trigger at a time. Just start with intruder then once your happy it's working add more

5 hours ago, Derek Foote said:

I have just looked at what i have sent and it looks like they have not been sent in the sam order that i loaded them. will try and sort them out.

As James said , take all the triggers off , and as I said before , your using the set terminal which is a hassle on a dialler 

 

Just use one trigger and connect it to the bell trig

5 hours ago, Derek Foote said:

I have just looked at what i have sent and it looks like they have not been sent in the sam order that i loaded them. will try and sort them out.

As James said , take all the triggers off , and as I said before , your using the set terminal which is a hassle on a dialler 

 

Just use one trigger and connect it to the bell trig

Ip1 to trig on panel I can't work out your pictures lol you only need to look at bell connections on ala panel and inputs on the dialler if everything else is connected ok

 

 

I have now numbered the photos of the wiring, I hope this helps to understand what I have done.

Photo 1, overall view of the Accenta G4 panel

Photo 2, Outside box connection on panel

Photo 3, connection to outside box

Photo 4, connection of speech dialler on panel

Photo 5, connection to speech dialler

Photo 6 wiring diagram for outside box as shown in Accents manual

Photo 7 wiring diagram for speech dialler as shown in speech dialler manual

Photo 8 connection of keypad on panel

Photo 9 connection to key panel

Go back to disconnecting. Remove all from the panel to the dialler apart from 1 trigger. As al-yeti and I have said. This stuff does work, I wouldn't use pstn but that's a later subject. Remove ALL triggers but 1