The disruption, which has been going on since 2 p.m., includes NÄL in Trollhättan, Uddevalla hospital and Brinkåsen's psychiatric facility in Vänersborg, among others.
It means that it is difficult to get in touch with NU healthcare's switchboard.
- We have activated manual routines and work based on our backup routines, and thus we do not judge that patient safety is threatened, says Anders Kullbratt
There is currently no forecast for when the disturbance will be rectified.