| American_Telesis Wholesale provider of private lines, dedicated internet and frame relay services to the resellers, agents and brokers. Network spans United States and Canada. |
| Colt_Telecommunications Fibre optic networks to deliver private wire, network interconnection, switched telephony and video in Europe. |
| CPCNet Provides network-based communication services for Hong Kong, Taiwan, Japan, Singapore, China. |
| Dentel_Netzwerk_Telefonie German network operator, established in 1996. |
| 8el UK network operator providing corporate voice and data services. Service level agreements. |
| Flag_Telecom_ Fiberoptic link around the globe. |
| Global_Crossing_Ltd_ Global integrated fiber optic network provider. |
| IDT_Corporation Provides wholesale and retail long distance services. Site includes link to data subsidiary. |
| KPNQwest_N_V_ Provides data-centric, IP-based services to businesses across Europe. (Nasdaq: KQIP). |
| Level_3_Communications,_Inc_ Large network throughout the US and Europe. Voice / Data / Internet. |
| Light_Technologies Competitive Australian provider. |
| MAC_Telecom Provides businesses with high-speed data connections and voice services. |
| NTT_Cable Long-distance provider for small and medium-sized businesses. Serving Germany, England, Italy, and Poland. |
| NTT_Communications Japan-based global networking company. |
| Pakistan_Telecommunication_Company_Limited Local, long distance, private circuits, based in Pakistan. |
| PanAmSat Bandwidth on demand and billing by the byte on an international ATM network managed end-to-end. |
| Reach Asia-Pacific focused backbone provider. |
| Singapore_Telecom Singapore based service provider with operations in 20 countries. |
| T-Systems_North_America Solutions for global corporations. Subsidiary of Deutsche Telekom AG. Headquarters in Illinois. |
| Uecomm_Limited Provides broadband network services throughout Australia. |
| United_Networks UK voice carrier offering TDM & IP based communications from their own facilities. |
| Videotron_Telecom Internet, data, and telephony services provider in Canada. [English/French] |
| Vtesse_Networks Provides optical networking and related data services in the UK. |
| XO_Communications Providing services to businesses worldwide over its networks. |
| Sector_Updates Sector-based investment news and commentary on biotechnology and pharmaceutical, energy, technology. |
| A8619_Protocol_Test_System The A8619 Protocol Test System offers Analysis, Simulation, Emulation of SS7, V5, ISDN, INAP, GSM, GPRS, CDMA and VoIP protocols. |
| Acterna Manufactures wide range of instrumentation and systems for communications equipment development and maintenance. Areas of application include optical transport, data communications, cable and wireless |
| Aegis OSP cable fault location test equipment. |
| AGM_Elettronica Manufactures fault location and measurment equipment for wire and cable manufacturers. |
| Allied_Analogic Manufacturer of the modem line tap used by POS, ATM and the telecommunications industry to troubleshoot analog data communications on telephone lines. |
| Ameritec Communications test equipment solutions, bulk call generators, switch/network, simulation, signaling analyzers, transmission impairment measuring sets (TIMS), bit error rate testers, wireless cellular |
| Applied_Signal_Technology,_Inc_ Design, develop, manufacture and market signal reconnaissance equipment to collect and process telecommunications signals. |
| Arca_Technologies Arca Technologies provide a complete range of VoIP, ISDN, VoDSL, xDSL, V5.1, V5.2 and PSTN test and simulation equipment |
| The_Board_Room_Inc_ Supplier of revenue assurance and switch testing equipment and systems. |
| Boonton_Electronics Manufacturer of RF power, microwave, audio, modulation and impedance test instrumentation and sensors. |
| Brighton_Electronics,_Inc_ Supplies digital and analog panel meters, temperature and process controllers, and hand-held test and measurement equipment. |
| Catapult_Communications_Corporation Develops, manufactures, markets and supports an advanced software-based test system offering an integrated suite of testing applications for the global telecommunications industry. (Nasdaq: CATT). |
| C_E__Cox Manufacturer of cable fault locating and testing equipment for industrial and telecommunications applications |
| Circadiant_Systems Manufactures optical test equipment. |
| Consultronics Manufacturer of telecommunications test equipment including xDSL cable qualifiers, test sets for ISDN, T3/T1, E1 and TDR. |
