CONTENTS

1 Scope
2 Normative references
2.1 Identical Recommendations | International Standards
2.2 Paired Recommendations | International Standards identical in technical content
2.3 Additional references
3 Definitions
3.1 Reference model definitions
3.2 Network layer architecture definitions
3.3 Network layer addressing definitions
4 Abbreviations
5 Subnetwork dependent convergence function
5.1 General model
5.2 Subnetwork user data
5.3 Subnetwork dependent convergence functions used with ISDN circuit-switched B-channel
6 Conformance
6.1 Static conformance
6.2 Dynamic conformance
6.3 PICS proforma
Annex A PICS proforma
A.1 Introduction
A.2 Abbreviations and special symbols
A.3 Instructions for completing the PICS proforma
A.4 Identification
A.5 Subnetwork dependent convergence functions for use with X.25 subnetworks