Once dial plan rules have been defined in the .csv file and a SIP trunk has been added, you must import the dial plan files into Config Tool so that the rules can be applied accordingly.
Before you begin
What you should know
When updating a dial plan rule that has already been imported once, you do not need to delete the existing rule from the Dial plans page. In the dial plan file, simply make the necessary changes to the rule, make sure not to change the name of the rule, and then reimport the rule. Upon import, dial plan rules with new names get added to the list of rules; those whose names are already part of the list, are simply updated.