I read some posts, and paid particular attention to TouchToneTommy's responses.
However, we were not able to complete the task.

Customer bought used system.
I installed it. Hotel rooms are on the 16 port analog card. We setup all rooms to be restricted and can only dial 0 for front desk, and allow 911.

We went to the table and tried to add a "9", and that did not work.
Went back to the table and added " 11 "
Still did not work?

Any and all relevant help would be appreciated.
Thank you


Telesystems technician