•Southwestern Bell Telephone Company (SBC) now AT&T
•Anritsu
•Raytheon
•Texas Utilities
•American Electric Power
•City of Abilene, Texas
•City of Dallas, Texas
•Motorola, Inc.
•Ford Motor Company
•Alcatel
•City of Memphis, TN
•Dallas Area Rapid Transit
•Devon Energy Corporation
•Orange County (California) Sheriff’s Department
•US Department of Veteran Affairs
•US Department of Interior
•US Air Force
•US Navy
•US Army
•CSC
•Aurora Healthcare (Wisconsin)
•Texas Instruments
•Digital Paging Company
•Whitman County, Washington
•Northrup-Grumman
•EGG (US Army Chemical Weapons Depot)
•City of Mesa, AZ
•Maricopa County, AZ
•ICOM America
•T-Mobile
•Alvarion
•Creative Communications (Phoenix, AZ)
•Jo Daviess County, IL
•Calcasieu Parish 911 Board (Lake Charles, LA)
•Clearwire
•L-3 Communications
•Cassidian Communications (formerly EADS Plant/CML Communications)