CONTENTS

 1     Scope 
 
2     References 
 3     Definitions  
 4     Abbreviations   
 5     Conventions     
 6     TDM-MPLS interworking           
 7     General requirements       
        7.1     User plane requirements     
        7.2     Control plane aspects        
        7.3     Fault management aspects  
        7.4     Traffic management aspects           
        7.5     Connection admission control for the IWF  
 8     Functional group considerations for TDM-MPLS network interworking    
        8.1     Transport label      
        8.2     Interworking label  
        8.3     Common interworking indicators    
        8.4     Optional timing information 
 9     Payload formats
        9.1     Structure-agnostic transport           
        9.2     Structure-aware transport  
10     Timing aspects 
       10.1     Timing distribution scenarios          
11     Packet loss aspects         
12     Support of CAS and CCS signalling        
       12.1     Support of CAS signalling 
       12.2     Support of CCS signalling 
13     Security considerations   
Appendix I – Alternative methods for TDM-MPLS interworking    
        I.1        Use of ITU-T Rec. Y.1411          
        I.2        Use of AAL type 2          
Appendix II – Optional processing of HDLC-based CCS signals    
Appendix III – Examples of functional diagrams    
Appendix IV – MPLS network performance metrics    
       IV.1     Errors in the MPLS network that impact TDM service      
       IV.2     Relationship to TDM service impairment metrics    
       IV.3     Availability requirements   
       IV.4     Voice quality requirements
Appendix V – Suggested common clock frequencies for RTP    
Appendix VI – Suggested payload sizes for structure-agnostic transport    
Appendix VII – Suggested number of AAL1 SAR PDUs per packet