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Temporary outage of telephony and Webex on 06/19 (20-22 h)

Wrench © Karolin Kriesch​/​TU Dortmund
On Friday, June 19, 2026, a conversion of the VoIP connection to the DFN (Telekom) will be carried out between 8:00 p.m. and 10:00 p.m.

During this maintenance window, the external telephone connection may be interrupted for up to 30 minutes. During this time, incoming and outgoing telephone calls with external connections are not possible.
In addition, the connection of the Webex software telephones will be reconfigured. The telephone service via Webex will therefore also be unavailable for around 30 minutes.