Exhibit 21-a

ADC TELECOMMUNICATIONS, INC.        SUBSIDIARIES

|Name                                                             |  | State/Country of
Organization
|---------------------------------------------------------------- |  | -----------------------------
|ADC Australia Pty Limited                                        |  | Australia                    
|ADC Solitra, Inc.                                                |  | Minnesota                    
|ADC de Juarez, S. DE R.L. DE C.V.                                |  | Mexico                       
|ADC de Delicias, S. DE R.L. DE C.V.                              |  | Mexico                       
|ADC Mersum US, Inc.                                              |  | Minnesota                    
|ADC Broadband Communications, Inc.                               |  | Delaware                     
|Pathway, Inc.                                                    |  | Ohio                         
|ADC Telecommunications Israel Ltd.                               |  | Israel                       
|G-Connect, Ltd.                                                  |  | Israel                       
|TDC Teledata Communication GmbH                                  |  | Germany                      
|Teledata Communication Australia Pty. Ltd.                       |  | Australia                    
|Teledata Communications Hellas LLC                               |  | Greece                       
|Teledata Communications do Brasil Ltd.                           |  | Brazil                       
|T.D.C. Holdings B.V.                                             |  | Netherlands                  
|Teledata Communications (Phillipines), Inc.                      |  | Philippines                  
|ADC Telecommunications Equipment Industry and Trade Col, Limited |  | Turkey                       
|TTT S.A.Telsul Teledata Communicacoes do Brasil                 |  | Brazil                       
|Meta Telecomunicacoes S.A.                                       |  | Brazil                       
|ADC Telecommunications Holding, Inc.                             |  | Minnesota                    
|ADC Telecommunications Sales Holding, Inc.                       |  | Minnesota                    
|ADC Telecommunications Sales, Inc.                               |  | Minnesota                    
|ADC Software Systems UK                                          |  | England/Wales                
|Metrica, Inc.                                                    |  | Delaware                     
|Metrica Ltd.                                                     |  | UK                           
|PCS Solutions, LLC                                               |  | Delaware                     
|PCS Solutions Canada, Inc.                                       |  | British Columbia             
|ADC Broadband Wireless Group, Inc.                               |  | Pennsylvania                 
|ADC Europe N.V.                                                  |  | Belgium                      
|ADC Telecommunications Netherlands B.V.                          |  | Netherlands                  
|ADC Telecommunications U.K. Ltd.                                 |  | England                      
|ADC Telecommunications GmbH                                      |  | Germany                      
|ADC Telecommunications (Holdings) Pty. Limited                   |  | Australia                    
|ADC Telecommunications Australia Pty. Limited                    |  | Australia                    
|ADC Telecommunications Singapore Pte. Limited                    |  | Republic of Singapore        
|ADC Telecommunications (China) Limited                           |  | Hong Kong                    
|ADC Telecommunications (Nanjing) Co., Ltd.                       |  | China                        
|ADC Telecommunications (Shanghai) Distribution Co., Ltd.         |  | China                        
|ADC Broadband (Hong Kong) Limited                                |  | Hong Kong                    
|Nihon ADC K.K.                                                   |  | Japan                        
|ADC Telecommunications (Scotland) Limited                        |  | Scotland                     
|ADC International, Inc.                                          |  | Barbados                     
|ADC Telecom Canada Inc.                                          |  | Quebec                       
|ADC Telecommunicaciones Venezuela, S.A.                          |  | Republic of Venezuela        
|ADC de Mexico S.A. de C.V.                                       |  | Mexico                       
|ADC Telecomunicacoes Do Brasil LTDA                              |  | Brazil                       
|ADC International OUS, Inc.                                      |  | Minnesota                    

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|ADC OUS Holdings, LLC                                 |  | Delaware               
|----------------------------------------------------- |  | -----------------------
|Telesphere Solutions, Inc.                            |  | Minnesota              
|Teleprocessing Products, Inc.                         |  | California             
|Princeton Optics, Inc.                                |  | New Jersey             
|ADC Irish Holding I, LLC                              |  | Minnesota              
|ADC Irish Holding II, LLC                             |  | Minnesota              
|ADC Irish Holding III, LLC                            |  | Minnesota              
|ADC Irish Holding IV, LLC                             |  | Minnesota              
|ADC Irish Holding V, LLC                              |  | Minnesota              
|ADC Irish Holding VI, LLC                             |  | Minnesota              
|ADC International Holding Company                     |  | Minnesota              
|ADC Software Systems (Ireland) Limited                |  | Dublin, Ireland        
|ADC Software Systems Canada, Ltd.                     |  | Ontario, Canada        
|ADC Software Systems USA, Inc.                        |  | Delaware               
|ADC International Finance Services                    |  | England                
|ADC Software Systems C.I. Ltd.                        |  | Jersey, Channel Islands
|ADC Software Systems Australia Pty. Ltd.              |  | Queensland, Australia  
|ADC Software Holding Ltd.                             |  | Ontario, Canada        
|NVision, Inc.                                         |  | California             
|Altitun AB                                            |  | Sweden                 
|Altitun Ltd.                                          |  | United Kingdom         
|Altitun Finans AB                                     |  | Sweden                 
|ADC Danmark ApS (also known as ADC Denmark ApS)       |  | Denmark                
|ADC DSL Systems, Inc.                                 |  | Delaware               
|ADC Global Holdings, Inc.                             |  | Minnesota              
|ADC Broadband Italy SRL                               |  | Italy                  
|ADC DSL Systems Canada Holdings Inc.                  |  | Canada                 
|ADC DSL Systems Canada Inc.                           |  | Canada                 
|ADC (India) Communications & Infotech Private Limited |  | India                  
|PairGain International Sales Corporation              |  | U.S. Virgin Islands    
|PairGain do Brasil Ltda.                              |  | Brazil                 
|ADC Telecommunications (Switzerland) AG               |  | Switzerland            
|PairGain Technologies UK Ltd.                         |  | United Kingdom         
|ADC Broadband Access Systems, Inc.                    |  | Delaware               
|BAS International Limited                             |  | Delaware               
|Broadband Equipment Sales Company Sweden AB           |  | Sweden                 
|ADC Systems Integration UK Limited                    |  | England                
|ADC Systems Integration France, S.A.S.                |  | France                 
|CTI France SAS                                        |  | France                 
|ADC Funding Company LLC                               |  | Delaware               
|iAN Israel, Inc.                                      |  | Delaware               
|ADC Services Fulfillment, Inc.                        |  | New Jersey             
|OSS Software Corporation                              |  | New Jersey             
|2409772 Ontario Inc. d/b/a CommTech Canada            |  | Ontario                
|ADC Puerto Rico, Inc.                                 |  | Puerto Rico            
|ADC Wireless Finland OY                               |  | Finland                
|ADC Liquidating Co. (UK) Ltd.                         |  | UK                     
|CommTech Europe Limited                               |  | UK                     
|Tdsoft LTD                                            |  | Israel                 

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