Mitel 3300 connecting to Paging Unit (MPA-9000)

[drwats1]

Hello Guys

Can you help?
We've been tasked with trying to connect a Mitel 3300MXe to MRC Public Address System a MPA-9000.
The information we have is the following:
They can Dial 85 to page zone 1
Dial 86 to Page zone 2
And Dial 8* to page all zones.
We've attached a link to a diagram of the connection to the PA.
But apart from it looking slightly E&M ish - does anyone have any idea how we can connect the Mitel to this particular PA Tannoy system and have in essence 3x zones?
I've seen some bodging of a Mitel 5320 speaker on here, but that does look a bit heath Robinson, but with 3x phones could give me the desired result.

 

[jpruder]

Looks like a connection to an loop start trunk port is needed

 

[drwats1]

Thanks jpruder
I think the way we are going to get this to work is by using 2x 5485 IP Paging Units.
Then with Direct and Group paging and speedcalls it should create the solution to the problem.