toll allow

Customer wants me to setup certain extensions ( I guess will go thru Toll Allow) to only be able to call the allowed numbers that we whitelist for them. so for example if user 101 wants to call 888-888-1234 , it will check outbound route and if it's there it will go thru otherwise will play a...

Hi guys, been looking at cant find howto setup the toll allow and deny etc, i an trying to block international domain tenant wide and cant seem to figure a easy way, surely there must be a way :) Any help would be appreciated thanks Kurt