This standard specifies the technical requirements for the composition, function, performance and testing methods of Advanced Security Building Intercom Systems. This Standard is applicable for Intercom systems used for any advanced security communication in public buildings. Advanced Security Building Intercom Systems (ASBIS) are used for rapid emergency and danger messages verification by voice communication, warning of a danger, rapid notification of the responsible emergency services/intervention services and for sending instructions on how to proceed. Requirement for a suitable concept is prior risk assessment and a definition of the protection target. The type of a Building and the usage of a building have influence on the risk calculation. In this standard, the relevant functions and performances are divided into 3 Grades. According to the results of the risk calculation, the security needs shall be covered by an individual System-Profile. Note: Examples of typical profiles are defined in the Application guideline IEC 62820-3-2, where a risk calculation is required Note: The application of this standard does not dispense to comply the public national regulations concerning emergency systems. Note: Systems for emergency purposes may be the subject of approval by local authorities.