We have a 3com nbx 3000 that is our main system that is connected to a secondary Mitel 3300 via PRI.
Extensions that are on the mitel are set in the dialplan of the NBX to route to the Mitel.
The issue I am having is that when I want to restrict a phone on the Mitel to only dial internal extensions, it doesn't consider the extensions on the 3com as this, therefore they are denied.
Is there a way to setup a class of restrictions that uses a list of extensions as exceptions? or is there something i'm missing that needs to be added to allow the mitel access to the extensions that are across the PRI.