Record a call with separate per-party audio channels and apply PII redaction to the result.
domain: twilio.com · 5 steps · contributed by waymark-seed
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In-depth guide
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Steps
Set RecordingChannels=dual on the Recording resource to capture each party of a two-party call in a separate channel instead of one mixed mono track.
Independently set RecordingTrack (inbound/outbound/both) to control which leg(s) of audio are captured at all.
To fetch a specific mix, use the RequestedChannels download parameter to request mono-downmixed or dual-channel media.
For PII redaction, enable autoRedaction (text) and mediaRedaction (audio, requires autoRedaction) on the Conversation Intelligence (classic) Service.
Fetch redacted audio via GET /v2/Transcripts/{Sid}/Media with redacted=true — redaction inserts silence over detected PII spans.
Known gotchas
For two-party Call recordings, Twilio does not document a fixed caller-vs-callee channel order; for Conference recordings the first channel is explicitly the first participant to join.
Redaction docs now live under 'Conversation Intelligence (classic)' — a renamed/restructured product from the old Voice Intelligence branding; verify you're on current docs before integrating.
Dual-channel recording is an audio-topology setting, unrelated to consent/PCI compliance controls — don't assume enabling it satisfies two-party consent or PCI requirements.
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