CONTENTS

 1     General
        1.1     Objectives and fields of application
        1.2     General characteristics
        1.3     Components of SS No. 7
        1.4     Description techniques in the Q.7xx‑Series Recommendations
 2     SS No. 7 signalling network
        2.1     Basic concepts
        2.2     Signalling network components
        2.3     Signalling point modes
        2.4     Signalling routes
        2.5     Signalling network structure
 3     SS No. 7 functional blocks
        3.1     Basic functional division
        3.2     SS No. 7 architecture
 4     OSI layering and SS No. 7
        4.1     OSI Layering
        4.2     Relationship between SS No. 7 layering and the OSI model
        4.3     Primitive Interfaces between SS No. 7 Functions
 5     Addressing
        5.1     Signalling message structure
        5.2     MTP addressing
        5.3     SCCP addressing
        5.4     User Part addressing
        5.5     Labelling
 6     Operations administration and maintenance
        6.1     Management
        6.2     Maintenance and testing
        6.3     SS No. 7 measurements
 7     Signalling system performance
        7.1     Hypothetical Signalling Reference Connection (HSRC)
        7.2     MTP
        7.3     SCCP
        7.4     TUP
        7.5     ISUP
 8     Flow control
        8.1     Signalling network flow control
        8.2     Signalling node (congestion) flow control
 9     Compatibility mechanisms and rules in SS No. 7
        9.1     Background
        9.2     Evolutionary requirements
        9.3     Forward and backward compatibility
        9.4     Compatibility rules for SS No. 7
10     Glossary