cgashling01,
I have finished my first round of changes to the document which you should see in RED. The biggest thing to test is under the Mitel Extra Configuration section. In there you would need to change your Interdigit-Long and Short back to their default values and then go the new SIP Trunk Group and remove Toll Restriction from the Trunk Group. I believe this will be a better solution in the long run since it would only adjust calls on that trunk and not the dialing of all the phones on the system; hopefully it works the way I expect it to.
I also moved Call Configuration to the top as it is really the first thing you should setup since it is necessary to have that created before your SIP Trunk Group so that you can just put the new Call Configuration in after you created the new Trunk Group.
Thanks,
TE