The op_buttons.conf file has all of the configs for each button in Flash Operator Panel you can edit this using the Config Edit button on the maint menu. You must reboot the Asterisk or restart the panel service after you make changes. The normal config files for Flash Operator Panel end in .cfg we changed them to .conf so they would match the other Asterisk files.
See the Flash Operator Panel we site for more info on Flash Operator Panel. http://www.asternic.org/
Go to the Cisco config editor and edit the default config. Change the Services URL to http://ipaddressofyourasteriskbox/directory/services.php you can then use the Services button of your Cisco phone to call your contacts.