�1���� Scope
�2����
General network requirements for multimedia service classes
������� 2.1���� Multimedia conference services class
������� 2.2���� Multimedia conversation services class
������� 2.3���� Multimedia distribution services class
��� ����2.4���� Multimedia
retrieval services class
������� 2.5���� Multimedia collection services class
������� 2.6���� Multimedia message services class