Abercrombie & Fitch

Aeroflex

AG Edwards

Agere Systems

AIG

Alcatel

American International Group

ARTEL Inc.

Ashton Metzler and Associates

AT&T

Austin Networking Associates, Inc.

Bell Canada

Boeing

Broadwing Communications

Brookfield Properties

BT Infonet

Burton Group

Cable and Wireless Ltd

Calix

Capital Group

Capto Veridicus

Chesapeake Netcraftsmen

ChoiceOne Communications

Ciena

Cisco Systems

Colgate-Palmolive

Colo Network Corp

Common Wealth

commonfund

Computers Plus

Corrigent Systems

Cox Communications

Current Analysis

Data Connection Limited

DC NET

Defense Information Systems Agency

Delco L. Cornett Associates

Department of Corrections

Desca

ECI Telecom

eCompany - Etisalat

EdgeStone Capital Partners

EDS

Edward Jones

Embratel

EMC Corporation

EMI Music

Equant

Ericsson Nikola Tesla d.d.

Ernst & Young

Exenet

Fidelity National Financial

FIS

FLAG TELECOM

FMA Technologies

FPT Information System No 7

France Telecom R & D

George Weston Bakeries

Glaxo Smith Kline

Global Crossing

GrameenPhone Ltd

Great-West Life

Guardian Life Insurance

Halloo Communications, Inc

Hammerhead Systems

Heavy Reading

Hewlett-Packard

Hollister Incorporated

Honeywell International

Hughes Communications

IBM

ICON+

IDC

IFX Networks

ini

ITT Industries

JACO Services, Inc

Juniper Networks

Level 3 Communications

Lightyear Network Solutions

Lockheed Martin

Lucent Technologies

Marsh

Merrill Lynch

Metro Cali S.A.

Microsoft Corp

Morgan Keegan & Co.

National City Bank

Nemeretes Research

Net Scout Systems

NetOneSystems co.,ltd.

NetQoS

Network World

Nexagent

NIKSUN, INC.

Nortel Networks

Northland Communications

NTT EAST

NYC Dept of Correction

Odyssey House

OMNI Research Group LLC

OPNET Technologies

Packet Design

PAETEC Communications Inc.

PITC

PREPA Networks Corp.

Prudential Securities

RGM Advisors, LLC

Rivulet Communications, Inc.

Rogers Business Solutions

Rohm and Haas Company

Rural Telephone Service Company

Samarkand State University

Samsung Networks

Secure Byte Inc

Securities Industry Automation Corporation

Southwest Displays

SPRINT NEXTEL

State of Kansas

TechTarget

Telecom New Zealand

Telefonica

Tellabs

Telus Communications

THALES E-SECURITY

The Boeing Company

Thomson Financial

Tier 1 Research

Time Inc.

Tiscali

Traxi-Technologies

Trends and Technologies

Triad Communications Group

T-Systems

UECOMM Ltd

Ukerna

UNHCR LIBERIA

United Technologies

UPS

US Holdings

Vanco

VerizonBusiness

Virtela Communications

Visiting Nurse Services of New York

VSNL International

WANDL Inc.

Warner Brothers

Willkie Farr and Gallagher

Xerox

Zachary Investment Research & Management LLC