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