Outage in CallTower

US Webex Customers experiencing call quality degradation, or call failures

Resolved Minor
July 30, 2025 - Started 3 days ago - Lasted 2 days
Official incident page

Need to monitor CallTower outages?
Stay on top of outages with IsDown. Monitor the official status pages of all your vendors, SaaS, and tools, including CallTower, and never miss an outage again.
Start Free Trial

Outage Details

Cisco has announced they are continuing to experience a network event similar to the one they had Yesterday, 730/2025. Cisco Engineering teams are collaborating on potential mitigation actions, including rerouting and optimizing network traffic to resolve the impact. This issue may cause degradation in media quality for some Webex Calling users and Webex Contact Center agents in the US region. Additionally, some provisioning tasks and emergency calls may fail, and certain Cisco Calling Plan services may also experience failures. 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.
Latest Updates ( sorted recent to last )
RESOLVED 1 day ago - at 08/01/2025 03:26PM

This incident has been resolved.

MONITORING 3 days ago - at 07/30/2025 06:04PM

Cisco's Engineering team has successfully implemented mitigation measures, and all impacted services are now fully operational and stable. CallTower will continue to monitor the situation closely and will share further updates as they become 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.

IDENTIFIED 3 days ago - at 07/30/2025 03:33PM

Cisco has announced they are continuing to experience a network event similar to the one they had Yesterday, 730/2025. Cisco Engineering teams are collaborating on potential mitigation actions, including rerouting and optimizing network traffic to resolve the impact. This issue may cause degradation in media quality for some Webex Calling users and Webex Contact Center agents in the US region. Additionally, some provisioning tasks and emergency calls may fail, and certain Cisco Calling Plan services may also experience failures.

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.

Be the First to Know When Vendors Go Down

With IsDown, you can monitor all your critical services' official status pages from one centralized dashboard and receive instant alerts the moment an outage is detected. Say goodbye to constantly checking multiple sites for updates and stay ahead of outages with IsDown.

Start free trial

No credit card required · Cancel anytime · 4400 services available

Integrations with Slack Microsoft Teams Google Chat Datadog PagerDuty Zapier Discord Webhook