This issue has been resolved.

We’ll continue to monitor and will provide a preliminary post-incident review upon request within 48hrs.

Thank you for your patience and understanding.

We've identified an issue with a third-party transcription provider that is causing increased call restarts and, for a subset of customers, call failures on voice. We've identified the root cause and are actively working on migrating traffic to resolve the symptoms. We'll provide an update within 30 minutes.