EXHIBIT 21.1

LIST OF SUBSIDIARIES



|                                        |  |                                                            
|--------------------------------------- |  | -----------------------------------------------------------
|Subsidiary                              |  | State or Other Jurisdiction ofIncorporation or Organization
|Ark Electronic Products, Inc.           |  | Florida                                                    
|Astarte Fiber Networks, Inc.            |  | Colorado                                                   
|Osicom Technologies Europe Limited      |  | United Kingdom                                             
|Paradyne Canada, LTD                    |  | Canada                                                     
|Paradyne Corporation                    |  | Delaware                                                   
|Paradyne Finance Corp.                  |  | Delaware                                                   
|Paradyne Networks, Inc.                 |  | Delaware                                                   
|Paradyne Worldwide Corporation          |  | Delaware                                                   
|Premisys Communications, Inc.           |  | Delaware                                                   
|Premisys Communications Ltd.            |  | United Kingdom                                             
|R-Net International, Inc.               |  | Nevada                                                     
|Sciteq Communications, Inc.             |  | Nevada                                                     
|Simpulan Mutiara Sdn. Bhd.              |  | Malaysia                                                   
|Zhone Holdings, Inc.                    |  | Delaware                                                   
|Sorrento Networks Europe SA             |  | Belgium                                                    
|Xybridge Technologies, Inc.             |  | Texas                                                      
|Zhone AB                                |  | Sweden                                                     
|Zhone International Ltd.                |  | Cayman Islands                                             
|Zhone International Limited             |  | UK                                                         
|Zhone Technologies Australia PTY LTD    |  | Australia                                                  
|Zhone Technologies B.V.                 |  | Netherlands                                                
|Zhone Technologies Campus, LLC          |  | California                                                 
|Zhone Technologies De Argentina SRL     |  | Argentina                                                  
|Zhone Technologies de Colombia Limitada |  | Colombia                                                   
|Zhone Technologies do Brasil LTDA       |  | Brazil                                                     
|Zhone Technologies GMBH                 |  | Germany                                                    
|Zhone Technologies, Inc.                |  | Canada                                                     
|Zhone Technologies International, Inc.  |  | Delaware                                                   
|Zhone Technologies KK                   |  | Japan                                                      
|Zhone Technologies Limited              |  | Hong Kong                                                  
|Zhone Technologies Ltd.                 |  | United Kingdom                                             
|Zhone Technologies Pte. Ltd.            |  | Singapore                                                  
|Zhone Technologies S. de R.L. de C.V.   |  | Mexico                                                     
|Zhone Technologies S.R.L.               |  | Italy                                                      
|ZTI Merger Subsidiary III, Inc.         |  | Delaware