ITS SC could not transfer calls to MS Teams numbers. Started testing lines to verify if it was an MS Teams issue or Webex Contact Center problem.
No phone service for external dialing or receiving.
MS has identified that an automatic script was activated after a failed service deployment per standard procedure. However, the script contained an underlying bug which routed PSTN traffic to components not configured to handle service requests.
They have reconfigured the service to route requests to functionally operational infrastructure to remediate impact. They have confirmed the issue is
resolved after monitoring the environment and receiving confirmation from previously impacted users that the issue is no longer occurring.
Report in 5 days.