ISS will be performing scheduled maintenance on the Cisco phone system on December 1, 2025, from 6:00 p.m. to 12:00 a.m.
What is Happening: ISS will be upgrading the virtual hosting environment for the CU Anschutz telephone servers. At the beginning of the maintenance, all Cisco phone users at CU Anschutz will experience a brief loss of telephone service as phones located there reconnect to the CU Denver-hosted environment. Teams Calling phone users will NOT be impacted.
Most Cisco telephone services will failover to the CU Denver telephone servers, reconnect and restore service, and will remain operating while the CU Anschutz systems are upgraded. There is no expected outage associated with restoring service to the CU Anschutz telephone servers at the end of the maintenance window.
What to Expect: If work needs to be conducted during this window, phone services on the Cisco system should work normally. Some exceptions have been identified, and we are closely working with those individuals. If you are a Finesse user or access voicemail via the webpage and normally use CU Anschutz links, you will need to use the CU Denver links. Both CU Denver and CU Anschutz links will work as normal by start of business on December 2, 2025.
If you have any questions or need assistance, please contact the Service Desk.
Posted Nov 26, 2025 - 09:00 MST
This scheduled maintenance affects: Telephone Services (CU Anschutz).