5LINX Enterprises, Inc.

ADEX Corporation
Alaska Communications Systems Group, Inc. [ALSK]
Amper, S.A.
Andrade Gutierrez S.A.
AT&T Alascom
AT&T Inc. [T]
Audiovisual, Inc.
Axtel S.A.B. de C.V.

BCE Inc. [BCE]
BSG Clearing Solutions
BT Wholesale

Carso Global Telecom, S.A.B. de C.V. [CGTVY.PK]
Centris Information Services
CenturyTel, Inc. [CTL]
Chunghwa Telecom Co., Ltd. [CHT]
Cincinnati Bell Inc. [CBB]
Communications Test Design Inc
Consolidated Communications Holdings, Inc. [CNSL]

DSLi Corporation

Eckoh plc
eOn Communications Corporation [EONC]
Equinix, Inc. [EQIX]
Eurocom Communications Ltd.

Frontier Communications Corporation [FTR]

Georgia Technology Authority
Globalive Communications Inc.
GO p.l.c.

Hickory Tech Corporation [HTCO]

ILD Telecommunications, Inc.
Inclarity plc
Intrado Inc.
Invomo Ltd.
Iowa Telecommunications Services, Inc. [IWA]

kgb USA

Manitoba Telecom Services Inc.
Metro One Telecommunications, Inc. [INFO.PK]
MTS Allstream Inc.

Network Enhanced Telecom, LLP
NobelTel, Ltd.
NxTV, Inc.

Oak Telecom Ltd.
Office of Communications

Pacnet

Qwest Communications International Inc. [Q]

Rapid Link, Incorporated [RPID.OB]
Redstone plc

Saigon Post and Telecommunications Services Corporation
Schooley Mitchell Telecom Consultants
Shenandoah Telecommunications Company [SHEN]
Shin Corporation Public Company Limited
Sistema JSFC
Sonae.com SGPS SA
Spiritel plc
SureWest Communications [SURW]

T-Systems Singapore Pte ltd
Third Party Verification, Inc.
TigerTel Communications Inc.
tw telecom inc. [TWTC]

Verizon Communications Inc. [VZ]
VietNam Post and Telecommunications Group
VocalTec Communications Ltd. [VOCL]
VoiceLog LLC
VoluBill SA
VT Communications

Warwick Valley Telephone Company [WWVY]
Windstream Corporation [WIN]