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
- --------------------------------------------------------------------------------------------------
59