CONTENTS

 1     Scope
 2     References
        2.1     Normative Reference
        2.2     Informative References
 3     Definitions
 4     Abbreviations
 5     Multi-frequency tone generation package
        5.1     Properties
        5.2     Events
        5.3     Signals
        5.4     Statistics
        5.5     Procedures
 6     Multi-frequency tone detection package
        6.1     Properties
        6.2     Events
        6.3     Signals
        6.4     Statistics
        6.5     Procedures