CONTENTS

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