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VTA is a system that enables VoIP Telephony operator to see a current state of calls, both - successful and failed. Information about traffic is generated in off-line mode. That means balance is calculated after a call termination.
Keywords: free billing program incoming-outgoing tariffs billing system voip access tariff plans customer reports global reports calls statistics balance limits vip customers report generation access levels call graphic partners-providers information about traffic generated off-line mode
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