Table of Contents

 1     Scope          
 2     References
 3     Definitions 
 4     Abbreviations and acronyms
 5     Conventions             
 6     Framework
        6.1     Layer 1            
        6.2     Layer 2            
        6.3     Implementation           
        6.4     Operator information 
 7     Designations of public switched circuit interconnections         
        7.1     General           
        7.2     Telephone-type circuits             
        7.3     Circuit used for switched telex and telegraph services    
        7.4     Interconnecting circuits in the public switched data network       
        7.5     Related information    
 8     Related information for public switched circuit interconnections          
        8.1     Urgency for restoration [item 1]            
        8.2     Terminal countries [item 2]      
        8.3     Names of network operators/service providers [item 3]
        8.4     Control station (sub-control station(s)) [item 4]
        8.5     Fault report points [item 5]      
        8.6     Routing [item 6]           
        8.7     Association [item 7]    
        8.8     Equipment information [item 8]             
        8.9     Use [item 9]   
       8.10     Transmission medium information [item 10]    
       8.11     Composition of the transmission [item 11]       
       8.12     Bandwidth or bit rate [item 12]             
       8.13     Signalling type [item 13]          
 9     Designations of fixed (non-switched) circuit interconnections between operators         
        9.1     General           
        9.2     Leased circuit interconnections              
        9.3     Fixed (non-switched) public circuits       
        9.4     Related information    
10     Related information for fixed circuit interconnections            
       10.1     Urgency for restoration [item 1]          
       10.2     Terminal countries [item 2]     
       10.3     Names of network operators/service providers [item 3]             
       10.4     Control station (sub-control station(s)) [item 4]              
       10.5     Fault report points [item 5]     
       10.6     Routing [item 6]         
       10.7     Association [item 7]   
       10.8     Equipment information [item 8]           
       10.9     Use [item 9]  
      10.10     Transmission medium information [item 10]   
      10.11     Composition of the transmission [item 11]      
      10.12     Bandwidth or bit rate [item 12]           
      10.13     Signalling type [item 13]         
      10.14     Applicable ITU-T Recommendations [item 14]
11     Designations of group, supergroup, etc. (bidirectional and unidirectional) interconnections              
       11.1     General          
       11.2     Bidirectional groups, etc.        
       11.3     Unidirectional groups and supergroups              
       11.4     Related information  
12     Designations of group link, supergroup link and line link interconnections        
       12.1     Group and supergroup links    
       12.2     Line links        
       12.3     Related information  
13     Related information for group, group link and line link interconnections          
       13.1     Urgency for restoration [item 1]          
       13.2     Terminal countries [item 2]     
       13.3     Names of network operators/service providers [item 3]             
       13.4     Control station sub-control station(s) [item 4] 
       13.5     Fault report points [item 5]     
       13.6     Routing [item 6]         
       13.7     Association [item 7]   
       13.8     Equipment information [item 8]           
       13.9     Use [item 9]  
      13.10     Transmission medium information [item 10]   
      13.11     End-to-end information or operational agreement [item 11]    
      13.12     Bandwidth [item 12] 
      13.13     Occupancy (for groups/supergroups, etc., and for line links) [item 13]  
14     Designations of digital block (bidirectional and unidirectional) interconnections           
      Page
       14.1     General          
       14.2     Bidirectional digital blocks      
       14.3     Restoration digital blocks        
       14.4     Multiple destination unidirectional digital blocks            
       14.5     Single destination unidirectional digital blocks 
       14.6     Related information  
15     Designation of digital path interconnections
       15.1     Conventional digital paths not connected to their terminal equipment   
       15.2     Restoration digital paths         
       15.3     Digital line sections and digital radio sections  
       15.4     Related information  
16     Designations of routes in the mixed analogue/digital transmission network    
       16.1     Transmission routes with one analogue-to-digital conversion   
       16.2     Transmission routes with two analogue-to-digital conversions 
       16.3     Transmission routes with more than two analogue-to-digital conversions           
       16.4     Related information  
17     Designation of data transmission systems    
       17.1     General          
       17.2     Data transmission links            
       17.3     Related information  
18     Designations of digital block interconnections created by the interconnection of digital circuit multiplication equipments (DCMEs)    
       18.1     General          
       18.2     Multi-clique configuration of DCMEs   
       18.3     Low-rate encoding equipment              
       18.4     Related information  
19     Synchronous digital hierarchy (SDH)
       19.1     Designation of multiplex sections of the synchronous digital hierarchy (SDH)      
       19.2     Designations of virtual container interconnections        
       19.3     Concatenated virtual containers           
       19.4     Leased circuits based on SDH 
20     Related information for digital block, path, data transmission system, block interconnections created by the interconnection of DCMEs, SDH multiplex sections and virtual containers    
       20.1     Urgency for restoration [item 1]          
       20.2     Terminal countries [item 2]     
       20.3     Names of network operators/service providers [item 3]             
       20.4     Control station [sub-control station(s)] [item 4]             
       20.5     Fault report points [item 5]     
       20.6     Routing [item 6]         
       20.7     Association [item 7]   
       20.8     Equipment information [item 8]           
       20.9     Use [item 9]  
      20.10     Transmission medium information [item 10]   
      20.11     End-to-end information or composition of transmission or operational agreement [item 11]    
      20.12     Bit rate (for blocks, paths and SDH multiplex sections) [item 12]             
      20.13     Occupancy (except for paths) [item 13]            
      20.14     Actual number of channels and access point identifier [item 14]             
      20.15     Clocking information (for blocks only) [item 15]            
      20.16     Direction of transmission (for unidirectional blocks) [item 16]  
21     Designation of connections for the asynchronous transfer mode (ATM)           
       21.1     General          
       21.2     Transport links            
       21.3     Virtual path   
       21.4     Virtual channels (VCAs)            
       21.5     ATM Layer 2 
22     Related information for the asynchronous transfer mode (ATM)         
       22.1     Urgency for restoration [item 1]          
       22.2     Terminal countries [item 2]     
       22.3     Names of network operators/service providers [item 3]             
       22.4     Control and sub-control station(s) [item 4]       
       22.5     Fault report points [item 5]     
       22.6     Routing [item 6]         
       22.7     Association [item 7]   
       22.8     Equipment information [item 8]           
       22.9     Use [item 9]  
      22.10     Transmission medium information [item 10]   
      22.11     Operational agreement [item 11]       
      22.12     Unassigned item [item 12]     
      22.13     Occupancy [item 13]
      22.14     Direction of transmission (for unidirectional transit network services only) [item 14]              
      22.15     ATM transfer capability [item 15]        
      22.16     Source traffic descriptor [item 16]      
      22.17     Cell delay variation tolerance [item 17]            
      22.18     Quality of service [item 18]   
23     Transit network services     
       23.1     General          
      Page
       23.2     Transit digital transmission service       
       23.3     Transit dark fibre service         
       23.4     Related information  
24     Related information on transit network service         
       24.1     Urgency for restoration [item 1]          
       24.2     Terminal countries [item 2]     
       24.3     Names of network operators/service providers [item 3]             
       24.4     Control station [sub-control station(s)] [item 4]             
       24.5     Fault report points [item 5]     
       24.6     Routing [item 6]         
       24.7     Association [item 7]   
       24.8     Equipment information [item 8]           
       24.9     Use [item 9]  
      24.10     Transmission medium information [item 10]   
      24.11     SLA [item 11]              
      24.12     Bit rate [item 12]       
      24.13     Commercial identifier [item 13]           
      24.14     Unassigned item [item 14]     
      24.15     Clocking information [item 15]            
      24.16     Direction of transmission (for unidirectional transit network services only) [item 16]              
25     Designations for wavelength division multiplexing (simple and dense)
       25.1     General          
       25.2     The equipment            
       25.3     Configurations for the newly created transmission systems       
       25.4     General format for the optical transmission systems     
       25.5     Related information  
26     Related information on DWDM        
27     Designation of connections for the digital subscriber line (DSL)            
       27.1     General          
       27.2     Related information for the ADSL connections
       27.3     Related information for the SDSL connection   
       27.4     Examples       
28     Exceptional designations    
       28.1     Exceptional designations with intelligence in the serial number 
29     Designation of optical transport networks   
       29.1     General          
       29.2     Data transmission links            
       29.3     Related information  
Annex A – Full examples for designation information    
        A.1     Full example for the designation information of a public switched telephone circuit              
        A.2     Full example for the designation information of a leased analogue circuit             
        A.3     Full examples for the designation information of a group and a group link interconnection    
        A.4     Full examples for the designation information of a digital block, digital path, data transmission system, blocks created between DCMEs, virtual containers and SDH multiplex section interconnections    
Annex B – KLM addressing and its relationship to time slot numbering for virtual containers    
        B.1     KLM addressing relationship to time slot numbering       
        B.2     KLM addressing of VC-4 occupancy      
        B.3     Comparative notation of KLM addressing vs. time slot numbering            
Annex C – Reference clause numbers for the various types of routes    
Annex D – Numbering of channels in data transmission systems    
Annex E – Notification form for List of ITU Carrier Codes    
Annex F – List of all ITU function codes    
Bibliography