[OpenSIPS-Users] About prepaid question

[Nick]

Hi

I have a question for callcontrol and cdrtool.

What command can i real-time found enough money to online user??

If I have account 0911111111, It have 5 dollars.
Now, It call to 0922222222. How much money for 0911111111 a real-time???

In MySQL. Only saw total money.  When 0911111111 don't enough money,  
Can I notice to user??

Thanks for your support.

Nick