- Agilent Technologies
- Airspan Communications Limited
- Airvananet
- Airvana, Inc
- Allied Telesyn Networks
- Alvarion Ltd
- Alcatel Mobile Network division
- Aperto Networks
- Askey International
- Aruba Networks
- AT&T Wireless
- Avaya, Inc.
- Bell Canada
- Carrier Access Corporation
- ComDev
- Communication and Systems
- Comnet International Co.
- Computer Associates International, Inc
- CS Telecom
- CTC, Japan
- Current Technologies.
- Datamax SPA
- Datamaxx
- DDI Pocket
- Dorsal Networks
- D&E Communications
- Digital Instruments S .r.l.
- Ericsson Sweden
- EQUANT
- FHP Wireless
- General Dynamics
- Hatteras Network
- Hewlett Packard
- Huawei Technologies Ltd
- Hitachi Communication Techonologies
- Hughes Software Systems
- Harris
- Intel
- JDS Uniphase
- Konica Minolta Systems Laboratory Inc
- Legra Systems, Inc.
- Lucent Technologies
- LogicaCMG
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- Lockheed Martin Mission Systems
- Metasolv Software Inc.
- Mintera Corp
- Mitel Networks
- Motorola Canada
- Micronova Electronic GmbH
- Marconi Australia Pvt. Ltd.
- Mott MacDonald
- NEC Telecom, Philipines
- NEC Communication
- NEC, Japan
- Netrake
- Nimsoft
- NTT East
- NTT DoCoMo
- Netg, Inc
- Nortel Networks
- Openwave
- PhotonicBridges
- RAD Data Communication
- Raytheon
- RagingNet
- Ramco Systems
- RedKnee
- Redline Communications
- Siemens AG
- Sentito
- Sawis Communication
- SHI
- Sun Microsystems
- Snell and Wilcox Ltd
- Teracloud Corporation
- Terayon
- Tollgrade Communications
- True Position
- Telkom
- Verizon
- Vodafone Americas
- Wave7 Optics, Inc
- WoodSideNet
- Wipro Ltd
- Xtera Communications
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