Outage in CallTower

Cisco Webex Calling quality degradation.

Resolved Minor
July 28, 2025 - Started 6 days ago - Lasted about 2 hours
Official incident page

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Outage Details

Cisco has advised they are currently experiencing a global event impacting Webex calling, media quality degradation and provisioning. CallTower has opened a master case to investigate this issue as it has been reported by more than one CallTower customer. This issue may or may not directly affect your services and is currently under investigation. If you are affected, please report the issue to support@calltower.com. CallTower intends to post updates on status.calltower.com approximately every 30 minutes, unless identified otherwise. This issue is being investigated as a top priority.
Components affected
CallTower Cisco Voice
Latest Updates ( sorted recent to last )
RESOLVED 5 days ago - at 07/28/2025 07:25PM

Cisco Engineering has completed mitigation activities. Services should now be fully operational. Please retest and confirm if there are any persisting issues, and please let us know if further support is needed.

CallTower will be closing this master case and all associated cases.

IDENTIFIED 5 days ago - at 07/28/2025 06:58PM

Cisco Engineers have identified a network event and are working diligently toward a resolution. The event is impacting multiple services including Webex Calling, Webex Contact Center, Emergency 911 services, and some Calling Plan Services. Symptoms could include quality degradation or in some cases, call failures. The event is isolated to the US region. There has not been an estimated repair time provided yet, but any new informaiton received will be provided once it has been made available.

CallTower has opened a master case for this issue as it is affecting more than one CallTower customer. This issue may or may not directly affect your services. If you are affected, please report the issue to support@calltower.com. CallTower intends to post updates on status.calltower.com approximately every 60 minutes, unless identified otherwise.

IDENTIFIED 6 days ago - at 07/28/2025 06:26PM

Cisco has announced a network event that is impacting provisioning and degrading call quality for Webex Calling and Webex Contact Center. They have also noted that some 911 services may fail and that some Cisco Calling Plan services, and Contact Center Agents may experience failures. Their engineers have been able to identify the issue, but there is no estimated repair time yet. Calltower is engaged with Cisco Support and is closely monitoring for any new information related to the event and will provide updates as they are made available to us.
CallTower has opened a master case to investigate this issue as it has been reported by more than one CallTower customer. This issue may or may not directly affect your services and is currently under investigation. If you are affected, please report the issue to support@calltower.com. CallTower intends to post updates on status.calltower.com approximately every 30 minutes, unless identified otherwise. This issue is being investigated as a top priority.

INVESTIGATING 6 days ago - at 07/28/2025 06:04PM

Cisco has announced a network event that is impacting provisioning and degrading call quality for Webex Calling and Webex Contact Center. Calltower has engaged Cisco Support and is closely monitoring for any new information related to the event.

CallTower has opened a master case to investigate this issue as it has been reported by more than one CallTower customer. This issue may or may not directly affect your services and is currently under investigation. If you are affected, please report the issue to support@calltower.com. CallTower intends to post updates on status.calltower.com approximately every 30 minutes, unless identified otherwise. This issue is being investigated as a top priority.

INVESTIGATING 6 days ago - at 07/28/2025 06:04PM

We are continuing to investigate this issue.

INVESTIGATING 6 days ago - at 07/28/2025 05:37PM

Cisco has advised they are currently experiencing a global event impacting Webex calling, media quality degradation and provisioning.

CallTower has opened a master case to investigate this issue as it has been reported by more than one CallTower customer. This issue may or may not directly affect your services and is currently under investigation. If you are affected, please report the issue to support@calltower.com. CallTower intends to post updates on status.calltower.com approximately every 30 minutes, unless identified otherwise. This issue is being investigated as a top priority.

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