CONTENTS

 1 Scope 
2 References 
3 Definitions  
4 Abbreviations   
5 Conventions     
6 Reference model for higher-layer protocols          
        6.1 Layered model of higher-layer protocols    
        6.2 General NGN performance model 
        6.3 Reference model    
7 Higher-layer protocol performance parameters     
        7.1 Higher-layer service response delay (HLSRD)       
        7.2 Higher-layer authentication delay (HLAD)  
        7.3 Higher-layer data transfer delay (HLDTD) 
        7.4 Higher-layer service delay (HLSD)
8 Higher-layer protocol availability parameters        
        8.1 Connection establishment success ratio (CESR)     
        8.2 Service success ratio (SSR)           
        8.3 Service availability (SA)     
Appendix I – Embodiment example for higher-layer services     
Bibliography