CONTENTS

 1 Scope 
2 References 
3 Definitions  
        3.1     Terms defined elsewhere    
        3.2     Terms defined in this Recommendation       
4 Abbreviations and acronyms        
5 Conventions     
6 Requirements    
7 Introduction to virtual trunks         
        7.1 Pseudo wire emulation and related terminology       
        7.2 Virtual trunks         
        7.3 Implementation options      
8 Virtual trunk procedures – distributed implementation       
        8.1 Definition of virtual trunks on an ATM interface      
        8.2 ME procedures     
        8.3 Simplified assignments        
        8.4 QoS
9 Virtual trunk data plane procedures – integrated implementation    
        9.1 Encapsulation        
        9.2 ATM control interface       
        9.3 QoS
        9.4 Usable VPIs within a VT   
10 Signalling procedures between ATM switches connected through a virtual trunk   
11 Virtual trunk setup and maintenance        
       11.1 Virtual trunk configuration 
12 Virtual trunk OAM         
       12.1 Defects and consequent actions     
Annex A – Support of both virtual trunks and individual VCs on the same ATM interface     
Appendix I – VPI range as local parameter     
Bibliography