CONTENTS

 1     Scope          
 2     Normative references           
 3     Definitions 
 4     Abbreviations           
 5     Conventions             
 6     Basic concepts and models  
        6.1     Functional model         
        6.2     Service models             
 7     Principles for the organization of an interconnected computerized international information service    
 8     Service specification              
        8.1     Inquiry information     
        8.2     Reply information        
        8.3     Conversion     
        8.4     Version 2 extensibility 
        8.5     Functionality  
 9     Common protocol specification elements     
        9.1     Character subsets and encoding            
        9.2     Filter concept
        9.3     Matching and matching rules   
        9.4     Paging             
        9.5     Hierarchical groups     
        9.6     The keyword concept of version 1         
SECTION 1 – VERSION 1.00 OF THE ITU-T E.115 PROTOCOL    
10     Version 1 of the directory assistance protocol specification  
       10.1     Overview       
       10.2     Inquiry format             
       10.3     Reply format
SECTION 2 – VERSION 2.00 AND 2.01 OF THE ITU-T E.115 PROTOCOL    
11     Versions 2.00 and 2.01 of the directory assistance protocol specification        
       11.1     Overview       
       11.2     Inquiry format             
       11.3     Reply format
SECTION 3 – VERSION 2.10 OF THE ITU-T E.115 PROTOCOL    
12     Version 2.10 of the directory assistance protocol specification            
       12.1     Overview       
       12.2     Convention for protocol diagrams       
       12.3     Structure of ITU-T E.115 message        
13     DA transaction        
       13.1     Structure of DA inquiry/reply  
       13.2     DA inquiry header       
       13.3     DA inquiry data           
       13.4     DA reply         
       13.5     DA reply header          
       13.6     Subscriber reply data 
       13.7     Locality reply data      
       13.8     Business category reply data  
       13.9     Street reply data         
      13.10     County, state or province reply data  
14     Directory transaction           
       14.1     Directory list inquiry header    
       14.2     Directory inquiry data
       14.3     Directory reply header             
       14.4     Directory reply data   
15     Functionality List    
       15.1     Overview       
       15.2     Functionality inquiry header    
       15.3     Functionality list reply header 
       15.4     Functionality reply data           
SECTION 4 – UNDERLYING PROTOCOL SUPPORT    
16     Fixed header protocol (FHP)              
       16.1     Introduction 
       16.2     Security context          
       16.3     Negotiation result      
       16.4     Data transfer phase   
       16.5     Exception conditions 
       16.6     Format of FHP protocol elements        
       16.7     Fields common for all message types  
       16.8     Specific fields              
       16.9     Use of the service provided by TCP      
17     Use of the service provided by the HTTP       
       17.1     Introduction 
       17.2     Support levels              
       17.3     Use of the HTTP POST              
       17.4     Requested service and protocol version selection          
       17.5     Exception conditions 
      Page
18     Operator's manual 
Annex A – Directory assistance keywords of directory assistance protocol version 1    
        A.1     Functional keywords table       
        A.2     Descriptive keywords table      
Annex B – Directory assistance protocol version 1 in ASN.1    
Annex C – Directory assistance protocol version 2.00 in ASN.1    
Annex D – Directory assistance protocol version 2.00 in XSD    
Annex E – Directory assistance protocol version 2.01 in ASN.1    
Annex F – Directory assistance protocol version 2.01 in XSD    
Annex G – Directory assistance protocol version 2.10 in ASN.1    
Annex H – Directory assistance protocol version 2.10 in XSD    
Annex I – Message codes for Recommendation ITU-T E.115    
Appendix I – NACE nomenclature    
        I.1                 About NACE       
        I.2                 NACE structure 
        I.3                 NACE at work    
        I.4                 Extract from NACE          
Appendix II – Examples of BER encodings    
       II.1     Introduction   
       II.2     Example of ASN.1 BER encoding of the DA protocol version 1     
Appendix III – ISO/IEC 10646, UTF8-encoding and relationship with ISO/IEC 8859-x    
      III.1     Introduction   
      III.2     UCS transformation format 8 (UTF-8)   
      III.3     BASIC LATIN and LATIN-1 SUPPLEMENT subsets              
      III.4     LATIN EXTENDED-A subset and relationship to ISO/IEC 8859-2/3/4          
      III.5     CYRILLIC subset and relationship to ISO/IEC 8859-5        
      III.6     BASIC GREEK subset and relationship to ISO/IEC 8859-7
      III.7     ISO/IEC 10646 ARABIC subset and relationship to ISO/IEC 8859-6             
Bibliography