Log in to Communication Manager as administrator and type: change feature-access-codes
In the field corresponding to the feature to which you want to assign the FAC, type the FAC that conforms to your dial plan.
ADDITIONAL INFORMATION:
You can scroll through the Feature Access Code (FAC) screen to locate the telephone feature that you want.
Some features require more than one FAC. Type an FAC in each required field. For example, type a separate FAC in the Call Forwarding Activation Busy/DA, All, and Deactivation fields.
Press Enter to save the changes.
Next steps
Ensure that you notify all users about the assigned FACs.
