- 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)