UDS PREMIUM CALL CENTER 4.0 Upgrade Product 50 nominative users 3 years release 4.0 nominative between 5,000 and 10,000 nominative users Only between 5,000 and 10,000 nominative users. €2,4 per nominative user/month. Includes 24x7 support and Monitoring, Control, and Notifications of the Workplace Infrastructure