Callback
What is it?
This script was originally written to replace the FreePBX released script: /var/lib/asterisk/agi-bin/callback.agi
At that time people were having problems getting the original script to make the callbacks. Since then fixes have been made and it also became clear that a new permission was required in /etc/asterisk/manager.conf file. The "Originate" permission is needed in order to provide the script with the capability to place outgoing calls.