CONTENTS

 1     Scope 
 2     References 
        2.1     Normative references         
        2.2     Informative references        
 3     Terms and definitions       
 4     Abbreviations and conventions     
        4.1     Abbreviations        
        4.2     Conventions          
 5     Technical overview          
        5.1     IPCablecom QoS architecture requirements           
        5.2     IP QoS access network elements   
        5.3     IPCablecom dynamic QoS architecture      
        5.4     QoS interfaces       
        5.5     Framework for IPCablecom QoS  
        5.6     Requirements of access network resource management      
        5.7     Theory of operation           
 6     Embedded MTA to CM QoS Protocol (pkt-q1)  
        6.1     RSVP flowspecs   
        6.2     DOCSIS support for resource reservation  
        6.3     Use of DOCSIS MAC control service interface     
 7     Authorization interface description (pkt‑q6)          
        7.1     Gates: The framework for QoS control      
        7.2     COPS profile for IPCablecom       
        7.3     Gate control protocol message formats       
        7.4     Gate control protocol operation     
        7.5     CMS use of gate protocol  
        7.6     Gate-coordination  
Annex A –Timer definitions and values    
Appendix I – Theft of service scenarios    
        I.1        Scenario No. 1: Customers establishing high QoS connections themselves 
        I.2        Scenario No. 2: Customers using provisioned QoS for non-voice applications       
        I.3        Scenario No. 3: MTA altering the destination address in voice packets      
        I.4        Scenario No. 4: Use of half-connections   
        I.5        Scenario No. 6: Early termination leaving a half-connection           
        I.6        Scenario No. 6: Forged gate coordination messages         
        I.7        Scenario No. 7: Fraud directed against unwanted callers   
Appendix II – COPS (common open policy service)    
       II.1     COPS procedures and principles    
       II.2     Comparison of COPS and LDAP for policy           
Appendix III – TCP considerations    
      III.1     Requirements         
      III.2     Recommended changes      
      III.3     TCP connection establishment impacting post-dial delay     
      III.4     Need for low latency for packets between the GC and CMTS, even under loss      
      III.5     Head-of-line blocking        
      III.6     TCP slow start       
      III.7     Delaying of packets: Nagle's algorithm        
      III.8     Non-blocking interface