EX-21 3 intertel010473_ex21.txt EXHIBIT 21 SUBSIDIARIES OF THE REGISTRANT EXHIBIT 21 SUBSIDIARIES OF INTER-TEL, INCORPORATED Listed below are all the subsidiaries of Inter-Tel, Incorporated, as well as the jurisdiction under the laws of which each was organized, and the percentage of the outstanding voting stock of each owned by Inter-Tel, Incorporated.
PERCENTAGE STATE OR OF VOTING JURISDICTION NAME STOCK OWNED OF ORGANIZATION ---- ----------- --------------- -------------------------------------------------------------------------------------------------- Inter-Tel Integrated Systems, Inc. 100% Arizona -------------------------------------------------------------------------------------------------- Inter-Tel Technologies, Inc. 100% Arizona -------------------------------------------------------------------------------------------------- Inter-Tel Leasing, Inc. 100% Arizona -------------------------------------------------------------------------------------------------- Inter-Tel.NET Inc. 96.2% Nevada -------------------------------------------------------------------------------------------------- Inter-Tel Software and Services, Inc. 100% Arizona -------------------------------------------------------------------------------------------------- Inter-Tel Midwest, Inc. 100% Delaware -------------------------------------------------------------------------------------------------- Inter-Tel Incorporated-New Jersey 100% Delaware -------------------------------------------------------------------------------------------------- Inter-Tel NetSolutions, Inc. 100% Texas -------------------------------------------------------------------------------------------------- Inter-Tel DataCom, Inc. 100% Delaware -------------------------------------------------------------------------------------------------- Southwest Telephone Systems, Inc. 100% New Mexico -------------------------------------------------------------------------------------------------- American Telcom Corp. of Georgia, Inc. 100% Georgia -------------------------------------------------------------------------------------------------- Access West, Inc. 100% Delaware -------------------------------------------------------------------------------------------------- Inter-Tel Integrated Systems (UK), Ltd. 100% United Kingdom -------------------------------------------------------------------------------------------------- Inter-Tel Japan, Inc. 100% Japan -------------------------------------------------------------------------------------------------- Tri-Com Communications, Inc. 100% North Carolina -------------------------------------------------------------------------------------------------- Florida Telephone Systems, Inc. 100% Florida -------------------------------------------------------------------------------------------------- NTL Corporation dba ComNet of Ohio 100% Ohio -------------------------------------------------------------------------------------------------- Integrated Telecom Services Corporation 100% Kentucky -------------------------------------------------------------------------------------------------- Telephone Corporation of America, Inc. (Telcoa) 100% Maryland -------------------------------------------------------------------------------------------------- Intercomm Americas, Inc. 100% Delaware -------------------------------------------------------------------------------------------------- TDI Services Corporation, Technology Dynamics for the 21st Century 100% Virginia -------------------------------------------------------------------------------------------------- Executone Inter-Tel Business Information Systems, Inc. 100% Arizona --------------------------------------------------------------------------------------------------
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