- no standardized core vocabulary : 
    
      - merge previous attempt (conneg, UAProf, Media Queries, CC/PP)
 
      - define a core set of device attributes for authors
 
      - propose an extension mechanism 
        
      
 
    
   
  - no standardized protocol 
    
      - merge and recommend existing protocols : 
        
          - UAProf based on specific HTTP headers
 
          - CC/PP : http extension framework but no deployment 
            
          
 
        
       
    
   
(see dedicated Delivery Context Workshop held
March 4-5 2002)