1 Scope and object
    1.1 Scope
    1.2 Object
2 Normative references
3 Definitions
4 General system requirements
    4.1 Principal features
    4.2 Responsible person
    4.3 Priorities
4.4 Safety requirements
5 System technical requirements
    5.1 Speech intelligibility
    5.2 Automatic status indication
    5.3 Automatic fault monitoring
    5.4 Monitoring of software controlled equipment
    5.5 Interface with emergency detection system
    5.6 Secondary power supply
    5.7 Climatic and environmental conditions
    5.8 Marking and symbols for marking
    5.9 Electrical matching values
    5.10 Connectors
6 Installation requirements
7 System operation
    7.1 Instructions for operation
    7.2 Records to be kept
    7.3 Maintenance
Annexes
A (informative) Measurement of speech intelligibility
B (normative) Measurement method
C (informative) Attention drawing audible signals
D (informative) Bibliography
ZA Normative references to international publications with
their corresponding European publications