CONTENTS

1���� Introduction�����
2���� Modifications to existing clauses of [ITU-T G.984.3]���
������� 2.1���� Clause 9.2.3.1 Upstream_Overhead message�������
������� 2.2���� Clause 9.2.3.8 Encrypted_VPI/Port-ID message��
������� 2.3���� Clause 9.2.4.1 Serial_Number_ONU message�����
������� 2.4���� Clause 9.2.4.5������
������� 2.5���� Clause 11.1.1 Items detected at OLT�������
������� 2.6���� Appendix I Transport of user traffic over GEM channels
�3���� New clause I.4����