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    
Appendices I to VIII, and XI    
Appendix IX – Theft of service scenarios    
       IX.1     Scenario No. 1: Customers establishing high QoS connections themselves  
       IX.2     Scenario No. 2: Customers using provisioned QoS for non-voice applications        
       IX.3     Scenario No. 3: MTA altering the destination address in voice packets      
       IX.4     Scenario No. 4: Use of half-connections    
       IX.5     Scenario No. 6: Early termination leaving a half-connection
       IX.6     Scenario No. 6: Forged gate coordination messages          
       IX.7     Scenario No. 7: Fraud directed against unwanted callers    
Appendix X – COPS (Common Open Policy Service)    
        X.1     COPS procedures and principles  
        X.2     Comparison of COPS and LDAP for policy          
Appendix XII – TCP considerations    
      XII.1     Requirements       
      XII.2     Recommended changes    
      XII.3     TCP connection establishment impacting post-dial delay    
      XII.4     Need for low latency for packets between the GC and CMTS, even under loss     
      XII.5     Head of line blocking        
      XII.6     TCP slow start     
      XII.7     Delaying of packets: Nagle's algorithm      
      XII.8     Non-blocking interface