Inbound SIP Calls With OPUS Codec Only Blocked
Our engineers have monitored the fix and confirmed the issue with Twilio Programmable Voice SIP interfaces and OPUS code has been resolved. All services are now operating normally at this time. (Affected: SIP Interface US1)
Started
Sep 15, 2026, 8:09 PM UTC
Resolved
Sep 15, 2026, 11:00 PM UTC
Duration
2h 51m
Verified sources
Incident Detail
We have identified an issue with some calls made to Twilio using Programmable Voice SIP interfaces and OPUS codec may unexpectedly be rejected. Customers would see a SIP 488 responses for those requests. Our engineering team is working on a fix. We will provide another update in 2 hours or as soon as more information becomes available.
Our engineers have implemented a fix and are monitoring system performance. We will provide another update in 2 hours or as soon as more information becomes available.
Our engineers have monitored the fix and confirmed the issue with Twilio Programmable Voice SIP interfaces and OPUS code has been resolved. All services are now operating normally at this time.