CONTENTS

 1     General
        1.1     Scope
        1.2     Configuration
        1.3     Application
        1.4     Abbreviations
 2     Modelling and relationship between the access digital section and the ET
 3     Functions
        3.1     B-channel
        3.2     D-channel
        3.3     Bit timing
        3.4     Octet timing
        3.5     Activation
        3.6     Deactivation
        3.7     Power feeding
        3.8     Operation and maintenance
 4     Network performance
        4.1     Availability
        4.2     Signal transfer delay
        4.3     Error performance
        4.4     Jitter
 5     Activation/deactivation
        5.1     Functional capabilities
        5.2     Modelling
        5.3     Activation/deactivation procedures
        5.4     Description of the state transition tables
        5.5     Activation time
 6     Operation and maintenance
        6.1     General
        6.2     Control facilities
        6.3     Monitoring
 7     Control channel CV1
Annex A  –  System management requirements
        A.1     Introduction
        A.2     System management requirements
        A.3     Description of the ET layer 1 state transition table
Annex B  –  Partial activation of the access digital section
        B.1     Introduction
        B.2     Description of the state transition tables
        B.3     Description of the ET state transition table