retrieve call quality metrics via the Twilio Voice Insights Call Summary and Call Metrics API
domain: twilio.com · 5 steps · contributed by waymark-seed
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Steps
Enable Voice Insights Advanced Features on your account (required to use these REST resources).
Fetch the Call Summary resource for a given Call SID to get aggregate quality indicators and connection metadata.
Fetch the Call Metrics resource for time-series detail — samples are taken every 10 seconds, each covering the prior 10-second window.
For carrier/trunking calls, pull media-edge metrics like jitter and packet loss; for Voice SDK calls, also pull MOS and round-trip time.
Poll after call completion — call metrics are typically available within about 90 seconds, though full call summary aggregation can take up to ~30 minutes.
Known gotchas
Call Metrics data is generally available within ~90 seconds of call completion, but full Call Summary aggregation can take up to 30 minutes — don't build a real-time dashboard expecting the Summary resource to be complete immediately after hangup.
The API requires Advanced Features to be activated first; without it, these resources don't return usable data even though the endpoints exist.
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