| 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. |
| American Reliance: Manufacturer offers a range of hand-held test sets used to evaluate telephone line capacity for voice, data communications and DSL services. |
| Ameritec: Communications test equipment solutions, bulk call generators, switch/network, simulation, signaling analyzers, transmission impairment measuring sets (TIMS), bit error rate testers, wireless cellular/PCS quality of service. |
| 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 |
| Blazar Technologies: Manufactures network monitoring hardware and software. |
| 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. |
| C.E. Cox: Manufacturer of cable fault locating and testing equipment for industrial and telecommunications applications |
| 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). |
| 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. |
| Ctc Union Technologies Co.,Ltd.: Hardy protocol, transmission analyzer, interface converters, Tl/El DSU/CSU digital access unit SDSL series, BOB and IAN cable tester, communication products series. |
| Delsat Group: Delsat is an Argentinian company which manufactures metering and monitoring equipment for telecommunications. |
| denk-stein:net: Supplies measurement and test equipment for telecommunications networks. |
| Electrodata Inc.: Manufacturer of hand-held telecommunications test equipment specializing in T1, DS3, and STS-1 Sonet testing. Includes ISDN, SS7, GR303, frame relay. |
| Electronic Communications Inc.: Cable television electronic and equipment repair service. Repair for converter boxes, rf line gear, and headend equipment. |
| EML European Market Liaison: Supplier of telecommunication test equipment for the local loop including Records Purification (RPS). |
| Endace: Endace manufactures network monitoring interface products that can test and analyze telecommunications and network equipment. |
| Erlang Communications: Test and measurement equipment, monitoring systems and customised solutions for GSM networks in sub-Saharan Africa. |
| Frame Communications Ltd: Designs, developes and manufactures test and management solutions for a wide range of protocols and system types as well as for network surveillance of billing verification and revenue assurance. |
| Frederick Engineering: Network test equipment manufacturer. Develops WAN/LAN network test equipment, telecom BER testers and protocol analyzers for all telecom protocols and circuits. |
| GAJ Technology: Simulators for providing proof of compliance for telecommunication equipment and for testing modems, DSLAMs, network cards or any device that uses CAT 5/5e cable. |
| Genesys IBS Ltd: Designs and develops telecommunications test solutions, specialising in automated PSTN & xDSL test systems. |
| GL Communications Inc.: Single and dual laptop analyzers provide comprehensive and versatile T1 and E1 testing. |
| GN Great Nordic: Develops telecommunication network performance monitoring and hands-free communicationis solutions. (Copenhagen Stock Exchange: ISIN code DK001027263-2). |
| GSI Labs: Sells network monitoring equipment to telecommunications companies. Includes software screenshots, product details, and FAQ. |
| GUISYS Corporation: Manufacturer of low cost PDA/PC driven POTS, TIMS, DS1, DS3, and ISDN hand-held test equipment. |
| HEAD Acoustics GmbH - Telecom Division: Communication quality analysis systems and consulting services for the telecommunications and related inductries. |
| Hermon Labs: Provides fully automated compliance, pre-compliance, development and production testing solution for analog PSTN, acoustic, xDSL, VoIP, T1, E1 and ISDN PRI interfaces. |
| IBEX Systems: Communications manufacturers representative and reseller firm offering radio, wire voice, data and video telecommunications networking and test equipment. |
| Independent Technologies, Inc.: Design, manufacture and market a wide range of customized communications products. |
| IneoQuest: Network performance testing, protocol, debug analysis tools. |
| Innocor: Designs and manufactures industry test equipment for broadband and legacy telecom applications. |
| Ixia: Provides test tools, development and testing services for call centers, communication networks, and network devices. |
| JFW Industries: Designs and manufactures RF components including attenuators, RF switches and specialized test systems for telecommunications, OEM test equipment, medical, automotive, and defense markets. |
| JTC Sales, Inc.: Utility equipment supplier for reel and wind up trailers,Fiber figure 8er and mud duck mudsucker |
| KSI Corporation: Manufactures timing boards for use in telecommunications, government and test and measurement applications. |
| KTL Worldwide: Independent organization for the testing and certification of telecom, IT and electrical products. Laboratories and accreditations worldwide. |
| L-3 Communications Celerity Systems: Manufacturer of test and measurement equipment for cable modems, cellular phones, digital video, LANs, and two-way radio equipment. |
| Lemco Tool Corporation: Manufacturer of tools for construction and maintenance of fiber optic and coaxial cable systems. Features detailed product drawings and tool tips. |
| Linkbit: Anytest product, E1/T1 portable tester, PRI analyzer and other testing units. |
| LP Technologies: Providing engineering, marketing and sales of RF products, primarily in the electronic and software product market place. |
| MarQuest Limited: Provides equipment and services for analysis and testing in digital telephony (PCM) transmission and signalling systems. |
| Megatel Industries Corp.: Provider of digital data communication and telecommunication equipment. |
| Metro Tel Corp.: Manufacturer of telecommunications test equipment. Products include subscriber loop, Linemans test sets and cable pipe location equipment. |
| MI Technologies: A leading supplier of microwave instrumentation for testing antennas, radomes, radar cross section analysis, components, EMI/EMC and automotive applications. |
| Microtronix Systems: Specializing in the production of telephone testing equipment. |
| Mike Sandman: Supply hard to find problem solving tools, test equipment, telephone repair parts and training videos. |
| Molher Electronica: Designs and developes measuring instruments for copper pair and fiber optic and offers automation solutions for xDSL interoperability testing. [May not work properly in all browsers] |
| MSS Power Systems: Providers of application tools to the telecommunications and power contractors. |
| Net-O2 Technologies: Provider of communications software, network testing and network security software solutions and services from India. |
| NetHawk Oyj: Provides mobile network equipment vendors and operators with instruments, systems and related services for accelerating development and improving quality. |
| Noise Com: Manufactures devices, test instruments and systems for evaluating noise susceptibility of wire-based and wireless communications components and networks |
| NS Electronics Service, Inc.: Sales and service of communications service monitors and equipment. |
| NTI: Manufacturer of test instruments for the professional audio industry, the broadcast market and the loudspeaker industry. |
| Nutmeg Utility: Development and distribution of tools, products and services to the telephone, construction and utility industries. |
| OEL: Supplier of telephone installation tools. |
| Omnicor: Supplier of IP traffic generators for gigabit ethernet switch, router and network performance testing. |
| Pan-Tech: Representative and distributor for test equipment, transmission equipment and supplies for fiber optic, copper and wireless communications systems |
| PDS Test: Company provide a wide range of communications test, development, demonstration and connectivity solutions. |
| PriLink: Telecommunications management tools with specific emphasis on North American ISDN-PRI services. |
| Radcom: Provider of analysis and monitoring solutions for VoIP, 3G Cellular and Datacom |
| RAN Systems Home Page: Provides call test monitor and master clocks to the 911 Emergency community. Includes product details and industry news events list. |
| Rochelle Communications: Global supplier of Caller ID and telephone test equipment. |
| Rohde & Schwarz: Manufacturer of spectrum analyzers for measurements in the frequency-domain, time-domain and modulation-domain (vector signal analysis). |
| RTI Products: Manufacturer of electronic snow sensing and anti-icing systems for the telecommunications industry. |
| Sadelco R&D: Sadelco R&D designs, manufactures, and sells communications test equipment. Sadelco R&D products are used in the testing of cable TV and computer systems. |
| Sage Instruments: Portable and hand held telephony test equipment. |
| San Mateo Electronic Supply: Distributors of Computer, networking cables and accessories. Test equipment for telco, network systems. |
| Schultz Communications, Inc: Supply a range of telecommunications equipment and tools . Products include test and measurement instruments, wire and cable and speciality tools. |
| Shenick Network Systems Limited: Offers information about test suites for network infrastucture. |
| SHF Communication Technologies AG: Manufacturer and supplier of bit error rate test systems, broadband amplifiers, digital modules and passive microwave components and related equipment. |
| Skyline Communications: Supplier of software monitoring and control solutions for the HFC broadband, satellite, broadcast and telecom industry. |
| Sofimation: Multipath Fading Simulator for GSM850, GPRS, 3G, CDMA2000 |
| Solinet: High technology company focusing on turn-key solutions for the implementation and validation of signalling systems. |
| Spirent Communications: Simulators for testing needs, xDSL and ISDN physical layer simulators and noise impairment generators. Complete product line for evaluation of telecom network access devices and terminals. |
| Spirent Communications: Test and Service Management Solutions: Spirent Communications provides test and service management solutions for the communications industry. |
| Summitek Instruments: Offering Summitek intermodulation and BaseStAR interference analyzers and colocation equipment. |
| Sunrise Telecom Inc.: Develops and manufactures telecommunications test and measurement solutions. |
| System Studies, Inc.: On-line resource for cable pressurization information and technology. |
| Telebyte Inc: Local Loop Simulators and Noise Generators for ADSL, ADSL2, ADSL2++, G.SHDSL, VDSL Testing. |
| Telemark Solutions: Supplier of innovative buried electronic markers used to mark cables, to provide easy cable locating. |
| Telephone Tools of Georgia: A manufacturer and distributor of unique and hard to find telecommunicaions tools from the turn of the century through today. |
| Telephony Software Associates, Inc.: Serial alarm monitoring of telecommunications equipment: protocol specifications, test procedures, software tools that facilitate installation and troubleshooting. |
| Telinc: Designs, develops and markets (WAN) Wide Area Network access products and communications test equipment. |
| Telsoft Inc.: Provider of telephone line-powered dialers and other telecommunications testing equipment. |
| testworx: Test equipment from several manufacturers for data communications and telecommunications networks. Applications include DSL, T-carrier, fiber optics, signalling and IP networks. |
| The Board Room Inc.: Supplier of revenue assurance and switch testing equipment and systems. |
| The Larry McGee Company: Manufactures industrial grade communication and control equipment. |
| The Phone Repair Company: Company sells new and refurbished test equipment, new hand tools and provides training in electronic equipment and test set repairs. |
| Ticknall Communications: Suppliers of telephone and data communications test and monitoring equipment |
| TraceSpan: Industry's first non-intrusive analyzer for vendor-independent testing of ADSL and ADSL2 networks. |
| Tracewell Systems, Inc.: Manufactures and integrates systems using VME, VME64x, VXI, CompactPCI and PXI for the telecommunications, military test and measurement and medical industries. |
| Tucana Telecom: Protocol test and measurement equipment, monitoring, simulating, load generators and emulator equipment for communication interfaces. |
| TX Technology Corp.: Designs and manufactures intelligent monitoring and control systems, remote and addressable sensors, computer controlled air dryer systems, and pressure and flow transducers. |
| ValueTesters: Supplier of datacom, telcom, air conditioning and power quality test equipment. |
| WAVETEL: Designs, develops and sells ISDN, SS7, V5 and PSTN protocol and traffic analysers for transmissions systems. |
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