CONTENTS

 1     General
 2     Service plane architecture
        2.1     General
        2.2     Characterization of services and service capability requirement
                  2.2.1     Service and service feature requirements
        2.3     Service and service feature interaction
                  2.3.1     Types of features considered for interactions
                  2.3.2     Mechanisms for handling feature interactions
        2.4     Service plane modelling