HOME > Products & Solutions > Prepaid Solutions > User Interface > User Interface Digram However, in our system, instead of entering the destination number, the user can press the desired button for longer than the usual duration for the pre-assigned special feature. For example, if you have a number saved on speed-dial/short dial, you would push the function button for that saved number for one second to dial that number. If the user's terminal equipment can't produce a long tone - as with some cellular phones - the user pushing the desired button followed by the '#' key can be a secondary method. Assigned features are: Button Function 1 Speed-Dial/Short-Dial 2 Speed-Dial/Short-Dial 3 Speed-Dial/Short-Dial 4 Speed-Dial/Short-Dial 5 Speed-Dial/Short-Dial 6 Recharge with a new PIN 7 ANI registration 8 ANI deregistration 9 Last dialed number redial During a conversation, the user can save the dialed number by pressing the desired unction button (from 1 to 5) for a long period of time. A new call can be initiated by pressing '*' for a long period of time.