A
ACM, Inc.
Actelis Networks
ADC
ADTRAN, Inc.
Advanced Technologies & Services
Aircell LLC
Alaska Communications Systems
Alcatel-Lucent
Allot Communications
Andrew Corporation (Grayson Wireless)
APCO International
Applied Micro Circuits Corporation
ASSIA
ATL Communications
AT&T
Audience, Inc.
Aviat Networks
Aware
(Top)

B
Bechtel Communications, Inc.
Bell Canada
Bexar Metro 911
BigBand Networks
Bingham McCutchen LLP
Bonneau and Associates
Bourns Limited
Broadcom Corporation
Brocade
Buckeye Telesystem
Burndy LLC
(Top)

C
California Cable&Telecommunication Assoc
Calix Networks
CCAD, LLC
CenturyLink
Charter Communications
Ciena Corporation
Cisco Systems
Clearwire
Comlink
CommSoft
Communication Test Design
Communications Data Group
Compuware Corporation
ComSouth Telecommunications
Cooperative Communications
Corning Cable Systems LLC
Cortina Systems, Inc.
Cox Communications
Creative Support Solutions
csf Corporation
CSI Telecommunications, Inc.
(Top)

D
Denco Area 9-1-1 District
Department of Commerce
Department of Defense
DSET Corporation
DTS, Inc.
(Top)

E
ECI Telecom
Electronics and Telecommunications Research
EPIC Touch
Ericsson, Inc.
ETI Connect
Evans, Griffiths & Hart
Evolving Systems & Telecom Software same
(Top)

F
Fairpoint Communications
FBI-ESTS
FCI
Fred Williamson & Associates
Frequency Electronics
Fujitsu
(Top)

G
Gallaudet University
GENBAND (former General Bandwidth)
Grand River Mutual Telephone Corp.
Greater Harris County 911
(Top)

H
Harris Corporation
Hatteras Networks
Hawaiian Telcom
Healy & Company
Hewlett-Packard
Hickory Tech
Hitachi
HLAA
Horry Telephone Cooperative
Huawei Technologies (USA)
Hypercube
(Top)

I
Idearc Media
Ikanos Communications
Independent Fiber Network
Ineoquest
Infineon Technologies
Inmarsat Limited
Innovative Systems
Intec Telecom
Integra Telecom
Intel Corporation
Interdigital Communications Corporation
Intertek
Intrado
Iowa Network Services
IP Fabrics, Inc.
Ironton Telephone
(Top)

J
JDSU (former Acterna)
John Staurulakis, Inc.
Juniper Networks
(Top)

K
Kineto Wireless
(Top)


L
L. Robert Kimball and Associates
LG Electronics
LSI Corporation
(Top)

M
Magnolia Broadband
Martin Group
Mavenir Systems
Metanoia Technologies
MetroPCS
Metropolitan Emergency Services Board
microDATA
Microsoft Corporation
Moapa Valley Telephone Company
Monroe Telephone Company
Motorola
Movius Interactive Corp. [Formerly IP Unity]
(Top)

N
Nagravision
National Communications System
National Information Solution Coop.(NISC)
National Technical Systems (NTS)
NDS Americas Inc.
NEC Corporation of America
NECA
NetTraffic
Network Cadence
NeuStar, Inc.
NextWave Wireless
Nielsen Media Research
NII Holdings
Noblis (Formerly Mitretek Systems)
Nokia Siemens Networks USA LLC
Nokia, Inc.
North-Eastern Pennsylvania Telephone
NTELOS
(Top)

O
One Communications
One2Many
Openwave Systems
Oracle USA, Inc.
Oscilloquartz
(Top)

P
Pantech Co. Ltd
Pen-Link, Ltd.
Pierce, Neumeister & Associates
Pigeon Telephone Company
PlantCML
PMC-Sierra, LTD
Polaris Wireless
Positron
Public Safety and Emergency Preparedness Canada
Public Service Telephone Company
(Top)

Q
QUALCOMM, Incorporated
Qwest
(Top)

R
Real Communications
Research In Motion
Rochester Telephone Company
Rogers Wireless
(Top)

S
Saft America
Samsung Telecommunications America
Sandy Beaches Software
Sea Change International
SMS-800 Help Desk
Southwest Research Institute
Sparnex Instruments
Spirit Telecom
Sprint Nextel
Stanford University Networking Research Center
State of Vermont Enhanced 9-1-1 Board
Sun Microsystems
SureWest Communications
Symmetricom
Syniverse Technologies, Inc.
(Top)

T
Tarrant County 9-1-1
Technocom Corporation
Tekelec
Tektronix, Inc.
Telchemy
Telcordia Technologies
TeleCommunication Systems
Telephone and Data Systems
TeleSphere Software
Tellabs Operations, Inc.
Telmar Network Technology
TELUS
TEOCO Corporation
Texas 9-1-1 Alliance
Texas Commission on State Emergency Comm.
The Data Center
Thomas & Betts Corporation
Time Warner Cable
T-Mobile USA
Toyota Info-Technology Center
Tridea Works, LLC
TruePosition
TVN Entertainment Corporation
(Top)

U
U.S. Metropolitan Telecom, LLC
UDP
Underwriters Laboratories
Union Telephone Company
(Top)

V
Verimatrix, Inc.
Verint Systems
VeriSign, Inc.
Verivue, Inc.
Verizon
Vision One Communications
Vonage Holdings Corporation
(Top)

W
Washington State Emergency Management
Wavesat
West Carolina Rural Telephone Coop.
Western New Mexico Telephone Company
Widevine Technologies
Wood County Telephone Company
WorldNet Telecommunications, Inc.
(Top)

X
XO Communications
(Top)


Z
Zarlink Semiconductor
Zeugma Systems
ZTE Incorporated
(Top)

#
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2Wire
800 Response Information Services, LLC
911 Datamaster