Inbound SIP Calls With OPUS Codec Only Blocked

This incident has been resolved.

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.

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.