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INCIDENT IN PROGRESS
Twilio
✓Inbound SIP Calls With OPUS Codec Only Blocked
Updated
Confirmed disruption
13:10Started
1Timeline events
Confirmed by the official source.
Executive summary
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Summary
Twilio identified an issue in which some calls using Programmable Voice SIP interfaces and the OPUS codec may be unexpectedly rejected with SIP 488 responses. The incident was reported as being monitored while engineering worked on a fix.
What users experienced
- User impact
Some inbound SIP calls using the OPUS codec may be rejected with SIP 488 responses.
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Started
13:1015 Sep 2026Timeline of the incident
-
Detection
Confirmed by an official service source.
What we know
- ✓Twilio officially identified an issue affecting some calls using Programmable Voice SIP interfaces and the OPUS codec.
- ✓Affected requests may receive SIP 488 responses.
- ✓Twilio reported the incident status as monitoring and said engineering was working on a fix.