Difference between revisions of "Callback and Calling Cards"
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Latest revision as of 09:12, 19 January 2022
How to create Callback Dial Plan for Calling Cards
Negative balance for Calling Cards
A calling card balance will go negative in only one case:
1. A user initiates a callback, and the system dials him back. 2. The user answers and enters a calling card number/PIN. 3. The system recognizes it and checks its card balance. 4. The Card balance is 0. 5. As the calling card is recognized, the charge for Call Leg A is deducted from the Calling Card balance. The Calling Card balance becomes negative.
This means that the system owner incurs a loss. However, there is no way of preventing a user from initiating such a call and not paying for it.