CONTENTS

 1     Scope        
        1.1     Applicability 
 2     References             
 3     Terms and Definitions        
        3.1     Terms defined elsewhere      
        3.2     Terms defined in this Recommendation          
 4     Abbreviations and acronyms           
 5     Conventions           
 6     Overview – IP packet forwarding in ITU-T H.248 media gateways     
        6.1     Unidirectional model
        6.2     Model for back-to-back IP host (B2BIH) mode
        6.3     Model for native IP router (IPR) mode            
        6.4     MG-embedded router versus router-embedded MG   
        6.5     IPR mode     
 7     Traffic separation for B2BIH and IPR mode processing          
        7.1     Discrimination criteria – Disjoint address spaces for local hosts and remote hops and hosts    
        7.2     "Local" delivery and context delivery decisions            
 8     IP-to-IP MG types – Mix of B2BIH and IPR mode processing  
        8.1     Hybrid B2BIH-IPR media gateway      
        8.2     B2BIH-only media gateway   
        8.3     IPR-only media gateway        
 9     IP Router Package 
        9.1     Properties    
        9.2     Events          
        9.3     Signals          
        9.4     Statistics       
        9.5     Error codes  
        9.6     Procedures   
10     IP Router NAT Package      
       10.1     Properties   
       10.2     Events         
       10.3     Signals         
       10.4     Statistics      
       10.5     Error codes 
       10.6     Procedures  
Appendix I – Routing tables and relation to route IPR contexts    
        I.1               Routing domains            
        I.2               Route advertisement and process of building tables         
        I.3               Interface IPR context and IIPR termination          
Bibliography