Details
Title: Any user may experience timeouts when joining conferences calls via PSTN
User Impact: Any user may have experienced timeouts when joining conferences calls via Public Switched Telephone Network (PSTN).
More info: Users may have experienced a delay of up to 15 seconds before being unable to join a conference in Microsoft Teams.
Final status: We've determined that a portion of infrastructure facilitating Microsoft Teams conference calls via PSTN had become unhealthy. We restarted the affected infrastructure and confirmed impact remediation after monitoring the service.
Scope of impact: Your organization was affected by this event, and impact was specific to approximately 2% of users served through the affected infrastructure.
Start time: Monday, August 31, 2020, at 2:00 AM UTC
End time: Monday, August 31, 2020, at 3:00 PM UTC
Root cause: A portion of infrastructure facilitating Microsoft Teams conference calls via PSTN had become unhealthy.
Next steps:
-We're monitoring the affected environment to ensure impact does not reoccur and are reviewing our monitoring services to look for ways to reduce detection time and more quickly restore service.
This is the final update for the event.