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Why do some VoIP routes show unusually short call durations, and how can these issues be addressed?
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Short calls often result from poor routing, fake answer supervision, or upstream providers dropping calls too early.
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Fake answer supervision means calls are billed as answered when the yare actually silent or disconnected check for silence at the start of calls.
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Low ACD (Average Call Duration) combined with low ASR (Answer-Seizure Ratio) is usually a sign of poor route quality or possible fraud.
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To fix it, change suppliers, test alternative routes, and monitor CDRs for specific failure patterns or anomalies.