�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