Answer/Seizure ratio
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In telecommunications, the Answer/Seizure ratio (ASR) is the number of successfully answered calls divided by the total number of calls attempted (seizures). Since busy signals and other rejections by the called number count as call failures, the calculated ASR value can vary depending on user behaviour.
The ASR is a measure of network quality defined in ITU SG2 Recommendation E.411: International network management - Operational guidance.
