Current members include:

A
ACME Wire Products Co., INC
ADC Telecommunications
Aerial Communication
Alltel Communications
Alcatel Network Systems
Alestra
Aliant
AT&T
AT&T Labs
AT&T Wireless Services
AVANTEL
Axtel Telecommunications

B
Bayan Telecommunications, Inc
Belize Telecommunications Limited
Belgacom
Bell Canada
BellSouth
Botswan Telecommunications Corporation
British Telecom

C
Cable & Wireless
Cable & Wireless- Hong Kong Telecom
Cable & Wireless- Optus
CapRock
Celumovil S.A.
Citizens Communications
Clear Communications
Clearnet Communications Inc.
Concert
Convergys Corporation
CTM
Cox Communciations
Credence Systems Corp.
Cyprus Telecommunications Authority

D
Deutsche Telekom AG
diAx Telecommunications
Digi Telecommunications Sdn Bhd

E
Electric Lightwave
Ericsson Inc.
Essar Commvision Ltd.
ETI A/S
EXCEL Communications

F

G
Global Crossing
Global One Communications
Global TeleSystems Group, Inc.

H

I
ICC International Connectors and Cable Corp.
INTELSAT
Intermedia Communications
Iskratel, Ltd.

J
Jabil Circuit
Jordan Telecommunication Company

K
Korea Telecom

L
Level 3 Communications
Lucent Technologies

M
Manitoba Telecom Services
Marconi Communications
Maritime Tel and Tel
Matav
Microcell

N
Net 2000 Communications
Nextel Communications, Inc.
Nokia Networks
Nortel Networks
NuWave Communications, Inc

O
Omnitel Pronto Italia S.p.A.
Optimus
Orange
ORBITEL S.A. E.S.P

P
PageNet
Prestolite Wire
PT. Satelindo
PT TELKOM INDONESIA
PT.Telekomunikasi Indonesia

Q
Qualcomm Incorporated
Qwest Communications

R
Raytheon
RisTI TELKOM Indonesia

S
Saudi TelecomSBC Communications
Siemens
SITA
Sonera
SONOFON
SPT Telecom, A.S.
Starhub Pte Ltd
Swisscom AG

T
Tekelec, Inc.
Telecom Argentina
Telecom Asia
Telecom Fiji Limited
Telecom New Zealand
Telefonica
Telefonica de Argentina
Telefonica de Espanha
Telekom Malaysia
Telemar-MG
Telephone & Data Systems, Inc.
Telkom South Africa
Telstra
TELUS
Turkcell Communications
Texas Utilities
Time Warner Inc.
Transtel
Trompeter

U
Unilever Chile
Unisys
UTA Telekom AG

V
Verizon
Verizon Wireless

W
Williams Network
Worldcom
WORLDxCHANGE
X
Y
Z