If you will be passing all the DIDs to the PBX all you need is an "accept all" rule:
Example (assuming T02 is the PBX):
voice grouped-trunk PRI
trunk T02
accept $ cost 0
In the GUI this can be found under Trunk Groups -> The PRI trunk name -> Detailed View - Permit/Restriction Call Templates -> Configure Advanced Templates
In Template enter $ and click "add".
If you will be passing all the DIDs to the PBX all you need is an "accept all" rule:
Example (assuming T02 is the PBX):
voice grouped-trunk PRI
trunk T02
accept $ cost 0
In the GUI this can be found under Trunk Groups -> The PRI trunk name -> Detailed View - Permit/Restriction Call Templates -> Configure Advanced Templates
In Template enter $ and click "add".
Jkesting,
I went ahead and flagged the "Correct Answer" on this post to make it more visible and help other members of the community find solutions more easily. If you don't feel like the answer I marked was correct, feel free to come back to this post and unmark it. If you still need assistance, we would be more than happy to continue working with you on this - just let us know in a reply.
Thanks,
David