3Rivers Communications
724 Solutions
Adaptec
Adecco International
AG Edwards
Agilent
Alcatel Telecom
Alltel
Ameritech
Amgen
Andaar (The Netherlands)
Andersen
Andrew Corporation
Anheuser-Busch
Anritsu
Apple Computers
Applied Digital Access
Applied Innovation
Architel Systems
Arinc
Assomax (Italia)
AT&T
AT&T Wireless Services
Avant-Garde
Axes Technologies
Bahamas Telecom
Ball Aerospace & Technologies Corp
Bay Networks
Batelco
Belgacom
Bell Canada
BMC Software
Bell South
Benthos
Bosch
Bogen Communication
Booz, Allen & Hamilton
Broadcom
Cable and Wireless
California Lottery
California State Government
Carilion Health System
CenturyTel
Chello Broadband (The Netherlands)
CML Emergency (Canada)
Cingullar
Cisco Systems
City of Grapevine
City of Seattle
City of Cleveland
CNA Insurance
Coherent Systems
Compaq
Comsat
Concord
Coppercom
COX Communications
Czech Telecom
Dallas Medical Society
Damovo
Data Kinetics
Datum-Austron
Dell Computers
Department of Homeland Security
Digicel
DoD
DSC (Alcatel)
DTS Interactive
Earthlink
Eftia
Ernst & Young
eGIX
EDS (US and UK)
EMC Corporation
Encore Acquisition
Ericcson
Era Poland
Ernst & Young
Etisalat (UAE)
EVI Technologies
Evolving Systems
Exfo (Canada)
Fedex
Foundry Networks
Freescale Semiconductor
Frontier Communications/Citizen Communications
Fujitsu (U.S. and Japan)
Fuzion Wireless
General Dynamics
GTE Solutions (Verizon)
Gtech
Harris
Hekimian
HP
Hitachi
IBM
iBasis
ILOG
Inet Technologies
Infineon
Infosys Technologies Limited
Innova
iNOC
inCode Wireless
Intel
Intelmex
Internal Revenue Services
Intelsat
Intrado
Inukshuk Wireless
John Hopkins University - APL
Juniper Networks
tKamo Power
Kertel
Korea Telecom (SK Telecom)

Lackland AFB
LG Electronics Worldwide
Liberty Mutual
Lockheed Martin
Lockheed Martin EIS
Logic (Bermuda)
Logix Communications
LSI
Lucent Technologies
Matrix
Metlife
Microsoft
Mobility (Bermuda)
MCIWorldcom
MetaSolv
MetLife
Microsoft
Minacom
MTC/Vodafon
MTN Nigeria
MTN Cameroon
Nationwide Insurance
Naval Undersea Warfare Center Division
NEC Japan
N.E.T
Nettest
Newbridge
Nuevatel (Bolivia)
Nextel Communications
Nightfire Software
NII Holdings, Inc.
NOAA (National Oceanic And Atmospheric Administration)

Oracle
OSI
Pelco Systems
PMC-Sierra, Canada
Pacific Bell (SBC/AT&T)
Pacwest Telecom
Panosonics
Panon GSM
Paragon Networks
Polska Telefonia Cyfrowa
Positron Fiber
Progressive Insurance
PTT Telecom
Qatar Telecom
Qualcomm
Reletec
Road Runner
Sasktel
Samsung US
Samsung Korea
Sapient
SBC
Sequoia Capital
SITA
Sharp Laboratories
Siemens
SK Telecom
Southwestern Bell
Southern LINC
Southern Polytechnique State University
Sprint
Sprint PCS
SR Telecom
State of California
Stratos
STC (Saudi Telecom)
Synopsis
Tekelec
Tektronix
Telcordia Technologies
Teleglobe
Telesis Tech
Tellabs
Telmex
Telstra (Australia)
Telus
Tennessee Valley Authority (TVA)
Teradyne
Texas Instrument
The Mitre Corp.
Toyota
Treasury Board of Canada, Secretariat
TRW
Tycomm
Unisource
UPS
U.S Air Force
U.S Army
US Marine Corps
U.S Navy
U.S National Security
U.S Immigration and Naturalization
United States Patent and Trademark Office (USPTO)
Verizon
Verizon Wireless
Videotran
Visa/Inovant
VISA
Wavetek (France)
WaveCore
Winstar
World Access
Xyratex (UK)