We are using a2billing for callback operations. what we need is like this :
when a2b calls back(now) it says : "please inter the number you wish to call".
we need : "please inter the number you wish to call " plus "or press *1 to recharge/reload" so that customer keys in card number and recharges balance. current system asterisk 1.8 , a2b 1.9.4 can reload only when balance reaches very low.