Scheduled maintenance is currently in progress. We will provide updates as necessary.
Posted Sep 19, 2025 - 22:00 MDT
Scheduled
Chicago datacenter moves
Purpose: During 9/19 and 9/20 As part of our Chicago datacenter expansion, we will be moving some core network hardware and servers inside the Chicago datacenter. Efforts will be made to minimize impact, but during the moves customers could see brief interruption in service lasting a few minutes each.
Systems Affected: - CT Cloud Voice - CT Cloud - Microsoft Teams - Cisco hosted - Cisco Webex
Impact: - During equipment moves there may be brief interruptions in service that could last up to a couple minutes each. This would include services like
Outage: Yes
Upgrade Expressway to X15.3 Purpose: Security and Bug Fixes
Systems Affected: Cisco Jabber / Edge Phones
Impact: - Calltower will be upgrading the Edge servers for Jabber and MRA/Edge Devices. Users will experience a connectivity loss with their Jabber Client/Services and/or their MRA Edge connected device.
Outage: No
FR8 Route Reflector migration Purpose: Migrating the FR8 route reflector from Hyper-V to VMware
Systems Affected: Sansay, Cisco Webex, Zoom and Microsoft Teams
Impact: - Customers may experience a brief connectivity disruption that may affect services in the Frankfurt datacenter.
Outage: Yes
Legacy DNS Service Shutting Down (Notice Only)
Purpose: Shutting down Slimer DNS in October MW
Systems Affected: CT Cloud SIP and CT Cloud Voice Customers
Impact: - If customer is using 69.54.70.15 or 69.54.75.28 for DNS services, please migrate to another DNS service, such as 8.8.8.8 (Google) or 1.1.1.1 (Cloudflare) before October 17
Outage: Yes
Posted Sep 12, 2025 - 14:38 MDT
This scheduled maintenance affected: Cisco Unified Communications (Cisco Voice, Cisco Jabber, Cisco Webex Calling), CT Cloud (CT Cloud SIP, CT Cloud Voice), Microsoft (Microsoft Teams - Direct Routing), and Global SIP Trunk, Hosted Cloud Based PBX, Zoom.