Wholesale glossary
Answer Seizure Ratio (ASR) is the percentage of call attempts on a route that are answered. It is the first health metric of wholesale voice: 40% and above is typically healthy on international traffic, and a collapsing ASR on a corridor is the classic early signature of bypass, refiling or a failing route.
Why it matters
Buyers price and steer on ASR, and sellers whose ASR drifts get their traffic pulled. It is the metric that moves first when anything changes in a call chain, which makes it the starting point of almost every quality investigation.
What practitioners watch
Benchmark by destination, never globally. Watch deviation from the corridor baseline, not the absolute value. Read ASR together with ACD: high ASR with short calls can mean callback fraud, and healthy ASR with collapsing ACD is a bypass pattern.
Related: Voice Wholesale · Routing Quality Observatory · ACD