Call Tower Outage History

CallTower Support has confirmed resolution of the Five9-related issues that were impacting call delays, audio issues, browser speed, and connection issues to Five9. The issue was addressed in coordination with Five9 Engineering, and services are operating normally at this time. CallTower will be closing this master case and all associated cases. Within three business days, an Official Root Cause Analysis (RCA) or a Preliminary RCA will be available and provided to customers upon request.

CallTower Support has received positive confirmation from affected customers, and the CT Cloud Communicator Mobile issue is considered resolved. CallTower will be closing this master case and all associated cases. Within three business days, an Official Root Cause Analysis (RCA) or a Preliminary RCA will be available and provided to customers upon request.

Some CallTower customers may have briefly experienced issues with Intermedia Contact Center Voice and login. The issue was identified as an Intermedia service outage and has since been resolved. Update from Intermedia: Intermedia Engineering teams identified the root cause as a Cloudflare service disruption that affected connectivity to certain Intermedia services. The third-party provider has since restored service, and Intermedia has verified that Email, Contact Center, and Voice services are fully operational. If any issues persist, customers are advised to contact Intermedia Support for assistance. CallTower will be closing this master case and all associated cases. Within three business days, an Official Root Cause Analysis (RCA) or a Preliminary RCA will be available and provided to customers upon request.

Microsoft is now reporting that the issue affecting Teams users ability to toggle call queues has been resolved. Microsoft’s final posting is included below. Issue ID: TM1226887 Affected services: Microsoft Teams Status: Service restored Issue type: Advisory Start time: Feb 4, 2026, 2:30 AM MST End time: Feb 4, 2026, 9:22 AM MST User impact Users may have been unable to toggle call queues on or off in the Microsoft Teams web or desktop client. More info As a workaround, users may have been able to use the Microsoft Teams mobile app to toggle call queues as expected. Additionally, admins may have been unable to make changes to call queues, auto attendants, and holidays within the Microsoft Teams admin center. Scope of impact Some users hosted in the North America region attempting to toggle call queues in the Microsoft Teams web or desktop client may have been impacted. Additionally, admins making changes to call queues, auto attendants, and holidays in the Microsoft Teams admin center may also have been affected. Root cause A code change contained within a recent service update was causing requests to be sent to an incorrect URL, resulting in impact. Next steps - We're reviewing our update procedures to understand why impact to call queues wasn't caught during the testing phase. This will allow us to drive service improvements by proactively identifying similar issues in the future and improve our update testing processes. Current status Feb 4, 2026, 10:08 AM MST We've reverted the offending service update and confirmed through monitoring service health telemetry that the impact has been remediated. This is the final update for the event. * CallTower will be closing this master case and all associated cases.