Ciptex incident
Twilio - Inbound SIP Calls With OPUS Codec Only Blocked
Resolved after 2 hours 49 minutes, affecting Ciptex NOC General Notifications, on September 15, 2026.
Following comprehensive monitoring, we can confirm that the incident has been fully resolved and all services have returned to normal operation.
Affected components
Update timeline
- investigating Sep 15, 2026, 08:13 PM UTC
We have detected potential service disruption through our monitoring systems and are actively investigating. A detailed assessment of the impact and affected services will be provided within the next 30 minutes.
- monitoring Sep 15, 2026, 08:17 PM UTC
Twilio have identified an issue whereby some calls made to Twilio using Programmable Voice SIP interfaces and OPUS codec may unexpectedly be rejected. Customers may see a SIP 488 responses for those requests. The Twilio engineering team is working on a fix. We will provide another update in 2 hours or as soon as more information becomes available.
- monitoring Sep 15, 2026, 10:28 PM UTC
Twilio 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.
- resolved Sep 15, 2026, 11:02 PM UTC
Following comprehensive monitoring, we can confirm that the incident has been fully resolved and all services have returned to normal operation.
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