Maintenance work: Telephone system – Cisco OnPrem UC Server

On 24.03.2026 between 12.00 p.m. and 10.00 p.m.

2026/03/02

During the specified period a security update will be installed on the local Cisco UC servers of TU Darmstadt. Changes to telephone system settings cannot be made. The TUDa UC portal will be available with limited functionality. After 6.00 p.m. there will be a brief log out followed by a renewed login of the Jabber clients. Reconnection of the service may take up to 30 minutes. Webex clients and Alcatel users are not affected.