SIP Endpoint returning 503 Service Unavailable

Started seeing errors about 10 minutes ago when trying to connect to the SIP endpoint for our project. No webhooks being generated, just instant rejection.

Same for us. Since 19:23:12 CEST 2026-05-29 all calls are failing with this error.

@OpenAI_Support please take a look at it urgently, it’s a critical error.

Hey everyone, We are looking into this issue. Can someone please share any relevant request ids with us?

We are not able to repro the issue. If you are still facing the issue, please share a request id with us. Thank you!