| Accuris Networks |
| Aeris Communications, Inc. |
| Affordable Island Communciations Inc. (AIsleCom) |
| AHCIET |
| AirCell |
| Airvana |
| AirWalk Communications, Inc. |
| Alcatel Lucent |
| All America Cables & Radio Inc. DR/TRILOGY DOMINICANA |
| Anritsu Company |
| Asia Pacific Telecom Co., Ltd. |
| Axesstel, Inc. |
| Bahamas Telecommunications Company Ltd. |
| Bayan Telecommunications, Inc. |
| Belize Telemedia Limited |
| Bermuda Digital Communications Ltd. |
| Bluegrass Cellular |
| Caribbean Cellular Telephone |
| Cellcom |
| Centennial de Puerto Rico |
| Chariton Valley Wireless |
| China Telecommunications Corporation |
| Cisco Systems, Inc. |
| CITIC Telecom International Holdings Limited |
| Commnet Wireless, LLC |
| CTIA |
| Digicel (Mossel Jamaica Ltd.) |
| DTH Television and Telecommunications N.V. (dba Mio Aruba) |
| Eastcompeace Smart Card Co., Ltd |
| Ericsson |
| GCI Communications Corp. |
| Globecomm Network Service Corporation |
| Hitachi Telecom (USA), Inc. |
| Huawei Technologies |
| Interop Technologies |
| iPass Inc. |
| IPcom Technologies |
| IVIO International Ltd. |
| Kalimat Telecom |
| KDDI Corporation |
| KORE Telematics, Inc. |
| KYOCERA Corporation |
| Lao Telecommunications |
| Leap Wireless |
| LG Electronics, Inc. |
| LG UPlus Corp. |
| MACH |
| Maritime Communications Partners
AS |
| MIO Dutch Antilles |
| Mosaik Solutions |
| MOVICEL Telecomunicações, Lda. |
| MTA Communications |
| Nex-Tech Wireless, L.L.C |
| Nokia Corporation |
| Nokia Siemens Networks |
| Omnnea |
| OnStar, LLC. |
| On-Waves ehf |
| Open Mobile Puerto Rico |
| PCCW-HKT Telephone Limited |
| PCTEST Engineering Laboratory, Inc. |
| Pine Belt Cellular, Inc. |
| PT Bakrie Telecom Tbk. |
| PTI dba IT&E |
| Public Mobile |
| Qingdao Haier Telecom Co., Ltd |
| QUALCOMM, Inc. |
| Reach Tech (Xiamen) Co. Ltd. |
| Research In Motion |
| Research Institute of Telecommunication
Transmission, MII (RITT) |
| RoamEx Inc. |
| Romtelecom SA |
| RINA (Rural Independent Network Alliance) |
| Samsung Electronics |
| Servicio di Telecomunicacion di Aruba (SETAR) N.V. |
| Sistema Shyam Teleservices Limited |
| SK Telecom |
| Smartfren PT Telecom, Tbk |
| Speednet Communications Ltd. |
| Sprint |
| Star Solutions International ULC |
| Starcomms Limited |
| Syniverse Technologies |
| Tata Teleservices Limited |
| TCL Communication Technology Holdings Limited |
| TeleCommunication Systems, Inc. (TCS) |
| Telecommunications Services of Trinidad and Tobago Limited (TSTT) |
| Telecsa - Alegro |
| Telesur, Suriname |
| Telus Mobility |
| Thumb Cellular |
| Togo Telecom |
| Total Software Solutions, Inc. (TSS) |
| Transaction Network Services (TNS) |
| U.S. Cellular |
| VIA Telecom, Inc. |
| Visafone Communications Limited |
| Vodafone Roaming Services |
| WANA Corporate S.A. |
| Water World Technology Co., Ltd |
| Wisconsin RSA 7 Limited Partnership (dba Element Mobile) |
| Yemen Mobile Co. |
| ZTE Corporation |
| |
 |
