tommaso wrote:
I have installed a2billing 1.2
I don't remember that one. v1.2.3 perhaps?
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however when a call in using the customer calling card number then place the call after I hang up it does not deduct the charges it will keep saying the same balance like for example $5.
You need to search harder. This topic has been covered countless times.
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if I install 1.3 ontop will that cause any issues?
You must also upgrade the database schema and merge any necessary changes to a2billing.conf. After the bug fixes I made to the SQL upgrade scripts a couple of months ago I've managed to upgrade a number of v1.2.3 systems to v1.3.0.