The Systems Parameter field on the Feature-Related System Parameters screen in Communication Manager controls this feature for all Edit Dial capable telephones. When enabled, a telephone goes into the Edit Dial mode in the on-hook state. After enabling a telephone, when you press a dial pad button in 96xx and 96x1 telephones, Communication Manager sends a message to Edit Dial capable telephones. This message instructs the firmware to collect digits to send to Communication Manager.