�1����
Scope
�2����
Normative references
������� 2.1���� Identical Recommendations | International Standards
������� 2.2���� Additional references
�3����
Abbreviations
�4����
Definitions and concepts
������� 4.1���� Basic Reference Model concepts
������� 4.2���� Additional definitions and concepts
�5����
Overview
������� 5.1���� General
������� 5.2���� Interworking and encapsulation
�6����
Principles of protocol identification
������� 6.1���� Need for protocol identification
������� 6.2���� Protocol identifier registries and values
������� 6.3���� Protocol identification methods
������� 6.4���� Protocol identifiers
�7����
Principles of protocol encapsulation
������� 7.1���� Encapsulation function
������� 7.2���� Protocol encapsulation methods
���� ���7.3���� Relationships
among EFs, EdPs, and EgPs
Annex A � Current Recommendations | International Standards supporting PIE
principles
Annex B � Examples of protocol identification and encapsulation methods