| 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__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. |
| 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. |
| 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. |
| Accoda_Ltd_ Products for leased line backup, aggregation, protocol conversion, dynamic bandwidth allocation, remote monitoring, and line testing. |
| AML_Wireless_Systems Design and manufacture broadband RF signal transmission systems for video, voice or data distribution. Features an overview of products and services, events calendar, and career opportunities. |
| Datang_Telecom_Technology_Co_,_Ltd_ China based manufacturer of fibre, coaxial, and data cabling. |
| Datax Manufacturer of CPE equipment for telecom operators, TDM, ISDN and ATM based products. |
| Encore_Networks Developer of security applications, converged signaling, and broadband voice and data solutions. Includes information about their products, services, partners and investors. |
| Golden_Gate_Telesystems Manufacturer of standard and custom microwave wireless data and voice communication equipment at distances up to 50KM for point-to-point and point-to multi-point applications. |
| Hal-Tec_Corporation End to end telecommunications solutions. |
| Hyperlink_Technologies,_Inc_ Manufacture wireless broadband equipment including extended range lan systems and internet solutions for service providers. Includes product specifications and pricing. |
| Integral_Access Supplies integrated access devices, multi-service access platforms, and operations management software that enable integrated broadband voice and data traffic over a single wire. |
| Toner_Cable Stocking distributor/manufacturer in the Cable TV or Broadband distribution system industry. |
| Unique_Broadband_Systems,_Inc_ Develop and manufacture broadband wireless products and systems. Features product specifications, investor information, career opportunities, and company news and events. |
| Colocation_Belgium Data centre in Antwerp Belgium. Information about the facility and services. |
| EQSN Colocation provider with data centers in Edinburgh and Glasgow. |
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PDS provide a comprehensive range of communications test, development & demonstration solutions for VoIP, xDSL, ISDN, Analogue, SS#7, Q-SIG, V5 and much more. PDS manufacture the widely adopted Clarinet protocol test system and represent leading test equipment manufacturers such as Telebyte, Intec, Goodthinking & ZTI. 
VoIP Protocol Analysis & Simulation Protocol Interoperability Testing ISDN, SS#7, Q-SIG, V5 Analysis & Simulation Hand Held ISDN Testers ISDN Network Simulators Hand Held xDSL Testers
New Zumara software uses your PC NIC to simulate multiple H.323 or SIP endpoints for VoIP & legacy protocol simulation, analysis, traffic generation & speech quality testing. SCTP support Q1 2008. Free trial available. 
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Our popular Clarinet E1/T1 & Basic Rate ISDN S-T/U hardware is compatible with new Zumara VoIP test software allowing an extensive range of testing. For example calls may be generated as ISDN and answered as SIP or generated as Q-SIG and answered as H.323. 
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