Ok. Here's how it's done.
Put all your Copper trunks in one group.
Create a digit mod that absorbs 1 digit then inserts '<t01>'
In the call progress tone plan edit plan 1 and put a wait for tone for 1 second.
Create a new COR plan- suggest you review this doc (I wrote) here before getting started:
Mitel ARS Plan on assigning a unique COR to the phone you want to use the copper trunks. (Such as 34)
In the COR of the PRI routes add in the COR you'll assign to the extension (i.e. 34) and add it to the COR index number.
Create an ARS route to point to the new trunk group. Test by setting up a specific number to dial in ARS Digits Dialed form to point to the new route. Test by dialing the number and verifying it went out the copper trunks.
Create a route list that selects the PRI 1st for outbound then overflows to the new ARS route for the copper trunks.
Assign this new route list the the ARS digits dialed form for all the 9+ numbers.
Test.
Your phone should now route out the copper trunks.
Or you can also do it this way:
Add the copper trunks to the same trunk group that the PRIs are assigned to at the bottom.
In the interconnect restriction form restrict 2 in the 3 row.
In the trunk assignment form assign an interconnect of 2 to all your PRI trunks.
Assign an interconnect of 3 to the extension you want to restrict.
Now the extension will be restricted from using the PRI trunks.
You may have to add the '<T01>' in the digit mod also.
Ralph