CallTower Status
All Systems Operational

About This Site

Welcome to CallTower's home for real-time system status updates. Here you will find a current and historical data on system performance.

Cisco Unified Communications Operational
Cisco Voice Operational
Cisco Jabber ? Operational
VoiceCube Operational
Attendant Console Operational
Skype for Business Operational
Skype for Business - Voice ? Operational
Instant Messenger and Presence Operational
Attendant Console Operational
CT Cloud Operational
CT Cloud SIP ? Operational
CT Cloud Voice ? Operational
Attendant Console Operational
CT Cloud Fax Operational
Contact Center Operational
Clarity Connect Operational
Five9 Operational
Telax Operational
Microsoft O365/Teams Operational
Microsoft Teams - Direct Routing Operational
Conferencing Operational
CT Cloud Meeting Operational
Adobe Connect Operational
iMeet Operational
ON Demand Audio Conferencing Operational
CallTower Connect Operational
Degraded Performance
Partial Outage
Major Outage
Past Incidents
Oct 22, 2019

No incidents reported today.

Oct 21, 2019

No incidents reported.

Oct 20, 2019

No incidents reported.

Oct 19, 2019
Completed - The scheduled maintenance has been completed.
Oct 19, 04:00 MDT
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 18, 22:00 MDT
Scheduled - Cisco Unified Communications:
***Possible Impact: Cisco Jabber - Customers will experience a brief loss in connectivity with their Jabber Client/Services, as server reboots occur.
***Possible Impact: Cisco Call Manager - Phones will re-register, calls in progress 'should' remain up until the call has ended. Phones will re-register multiple times during the Maintenance Window, this is expected behavior.

Skype for Business:
***Possible Impact: Skype for Business - Customers will experience that their Skype for Business clients will disconnect and reconnect at times during the Maintenance Window.

Fax Platforms:
***Possible Impact: CT Cloud Fax / MasterFax - Customers will experience their Fax services will be unavailable for a time during the Maintenance Window.
Oct 11, 10:41 MDT
Oct 18, 2019
Resolved - Microsoft has noted that they believe this global issue regarding Authenticaion services is largely recovered and they are seeing services normalize. While they indicate they are continuing to search for the root cause, they believe the environment is now stable.

CallTower will be closing out this incident. However, CallTower Engineering will continue to monitor the issues and Microsoft’s status page, found at:, until Microsoft officially closes the incident.

If you have any further problems please contact or 800-347-5444.
Oct 18, 16:08 MDT
Update - CallTower is continuing to monitor the global issue Microsoft is experiencing with authentication requests. The latest updates are now being provided at:

Currently Microsoft states they are still working to isolate the issue and have identified that this issue could affect any of your users if they utilize MFA to access Microsoft 365 services.

CallTower Engineering is continuing to monitor this situation and stay up to date to look for any items we can mitigate.

If you are unable to login to Teams and use your CallTower Teams Direct Routing services CallTower Support can add a forward to another phone to bypass Microsoft Teams until this issue is resolved. Please contact or 800-347-5444 if you’d like to request this change.

CallTower will provide further update when it is made available from Microsoft.
Oct 18, 11:23 MDT
Monitoring - CallTower is aware of an issue globally affecting Microsoft’s authentication services. This is affecting users trying to login to various Microsoft hosted services; including O365, Microsoft hosted Skype for Business, Microsoft Teams, and other Multi Factor Authentication (MFA) or Federated services.

This is a global issue with Microsoft’s services, you can find updates on status from Microsoft’s twitter account at: The most recent update is:

“We're investigating issues where users may be unable to access the admin center when using MFA. We'll provide an update shortly.”

CallTower hosted Skype for Business is unaffected. CallTower Engineering will continue to monitor this issue and will take any proactive steps available for affected users.

If you are a Teams Direct Routing user and are unable to log into the Teams client to receive calls, please contact or 800-347-5444 for assistance in rerouting your numbers to an alternate location such as a mobile device.
Oct 18, 09:10 MDT
Oct 17, 2019

No incidents reported.

Oct 16, 2019

No incidents reported.

Oct 15, 2019

No incidents reported.

Oct 14, 2019

No incidents reported.

Oct 13, 2019

No incidents reported.

Oct 12, 2019

No incidents reported.

Oct 11, 2019

No incidents reported.

Oct 10, 2019

No incidents reported.

Oct 9, 2019

No incidents reported.

Oct 8, 2019
Resolved - CallTower has validated that services have normalized with customers affected by the issue. CallTower Engineering has identified the root-cause and corrected an issue on the affected system. Cases opened under this master ticket will be closed.

Please report any additional issues to or 800-347-5444
Oct 8, 16:04 MDT
Monitoring - CallTower Engineering has taken remediation steps and services appear to have normalized. CallTower Support is continuing to monitor the Skype for Business (SfB) client login issue.

Please retest your services at this time and if you experience any failures please contact or 800-347-5444.
Oct 8, 14:43 MDT
Investigating - CallTower Support is aware of an intermittent issue with a limited number of Skype for Business (SfB) customers. Affected SfB clients may not allow users to log in or connect. CallTower Engineering is investigating the issue and working on steps to resolve. As remediation is performed, there is a possibility of SfB clients disconnecting and automatically reconnecting during the move.

If you believe you are affected by this issue please contact or 800-347-5444.
Oct 8, 14:13 MDT