ARS dialing with Centrex - Mitel 250/5000/Axxess

[AAdivot]

Hello,
with the numbering plan, what change do I need to make to let an analog phone dial 8, 9(for centrex), XXX-XXXX?
I tried TS,expired ARID...
Anyway, let's just start with Local dialing.
FG P1500

2 ECHO toll​

3 Echo 3 Digits after toll field​

4 Echo local address​

RG P1000

N+​

P1500​

Each trunk is in it's own TG.
I did try House Phone, tried '8', tried "8'9" but it fails.
I tried adding Dial Patterns to P1000 like XXXXXXXX (8 digits.
I need a clue.

 

[thohiopatriot]

Starting with the assumption the user is pressing an outgoing key or that 8 is dialing ARS...

For your example above, if dialing a local number in the facility group you do not need to echo a toll digit.

In numbering plan select dial rules. Select an unused rule (example 10) and change it to add 9.

In your dial rules for FG P1000 add the new rule (rule 10) before echo 3 digits after toll field.