System license required for firmware V12.10 and higher, for systems up to 100 rooms and described additional functions and features. The system licence for system Systevo Call Ackermann is used to activate associated parameters of the ward management controller and should be installed on the Systevo Control/Systevo Control IP+. The system license is required to upload the system configuration. Functions: - Supports up to 100 rooms - Prepared for VDE 0834-2016 - "Dynamic acoustical call transfer" (based upon active zone linkage/concentration) - Access to new releases of firmware-updates - Compatible with VLAN etc. - Supports up to 100 IP room devices - IP-based intercom