Resolved incident
SIP US Maintenance
Vapi · Maintenance · Started
- Duration
- 10m
- Severity
- Maintenance
- Status
- Resolved
Summary
Maintenance · Resolved
Due to operational delays, the maintenance occurred at 10:50pm PT. We observed a decrease in the rate of outbound dials that returned to normal levels at 10:58pm PT. No on-going calls would have been impacted.
Event timeline
How this incident unfolded, from the official status page.
Unknown
Vapi
Due to operational delays, the maintenance occurred at 10:50pm PT. We observed a decrease in the rate of outbound dials that returned to normal levels at 10:58pm PT. No on-going calls would have been impacted.
Unknown
Vapi
Maintenance ended
Unknown
Vapi
We are performing maintenance on our SIP infrastructure to improve monitoring and stability. This will result in ~1min downtime. Who is affected: Calls using Vapi numbers, SIP (sip.vapi.ai), or a BYO SIP trunk will be unable to connect during the maintenance. Who is not affected: Calls using a native Twilio, Telnyx, or Vonage number connected directly, web callers, or users in the Vapi EU or AUS regions. When: September 20, 2026, 10:00pm to 10:10pm PT What to expect: SIP calls will fail to connect for about 1 minute at 10:00pm PT and return the standard error response. We will then validate for the rest of the window while calls connect normally. Action needed: If one minute of failed calls is a concern, route through an alternate transport such as Twilio for the window. We will update this page when calls are connecting again and when the work is complete.