I’ve built a AI voice assistant using the Realtime API and connected it with a caller using an SIP connection with Twilio. The call is initiated when the caller dials my Twilio number, and Twilio creates an SIP connection with OpenAI. When the call connects, the AI is fantastic. But very frequently …

I have deployed all our planned fixes/improvements! I am seeing webhooks at ~1 second now. If people still see issues with Webhooks please reach out. These are the changes I made. SIP Servers are now deployed to four regions (instead of just one) Webhooks would get dropped because a service intern…

I’m experiencing the same issue. Since I started building a demo with OpenAI SIP and Twilio, I’ve run into the same problems you described. About 30% of the calls I tested didn’t connect, and I couldn’t figure out why. But today it got worse: my server no longer receives any webhook messages, even …

No change on our side with this @Kenneth_Barrios . Really sorry to hear you are having problems. I will start investigating this! This week we are rolling out some major infrastructure improvements here. This will reduce the latency between SIP server + webhooks firing.

Could you post some example call IDs? This will help us investigate from our side.

Hey, last week on Friday I ran into an issue where OpenAI stopped handling SIP calls after about 30 seconds. The model just stopped responding, and it was completely reproducible. But only via SIP. I switched to WebSockets as a workaround, but the quality there is noticeably worse — and of course a …

Sorry about that @binkrassdufass ! That issue was Invalid SDP offer in starting SIP call - #35 by Sean-Der thread and was from a bad commit. I reverted and re-landed with things properly implemented. For the webhook issue I have gotten a few traces and seems like things are timing out after only 5 …

I have been testing/trying different things all morning and I always get a 403 after 10 seconds. I see the 5 seconds in the traces, but I haven’t been able to reproduce. I will continue investigating. Sorry I have nothing yet.

I’ve added better logging to our stack so that we’ll have better statistics going forward on how often these failed connections happen and precise datetimes for debugging.

@juberti Pulled the numbers and our P99 for webhooks delivery is ~7s. We timeout the call at 10s I am increasing our SIP Timeout duration to 15s (up from 10) also going to work on bringing those webhooksapi times down. Sorry this is causing disruptions, we are gonna make it better quick …

Realtime API unreliable over SIP

API

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Realtime API unreliable over SIP

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