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Telephone Line

Verification of telephone line or circuit signal quality and integrity.

See Also: Telephone Line Test, Central Office Switch


Showing results: 31 - 45 of 54 items found.

  • Line Tester

    LT51 - H Heuer Instruments Pty Ltd.

    The LT51 Line Tester is a portable handheld battery powered instrument for Data, DSL, Telephone, Voice Copper Line testing. It combines the features of several pieces of test equipment such as a Level Meter / Spectrum Analyser, Distortion Analyser, Oscillator, Handheld DMM and TDR in the one small lightweight package.

  • Split-box Pipe & Cable Locator

    Weshine Electric Manufacturing Co., Ltd

    Pipe Locator is specially designed to detect pipes, sondes, telecommunication lines buried utilities. This device may detect buried power cables, CATV cables, gas and water pipes, sewer lines, telephone cables, fiber optic cables with sheath, sondes, inspection camera transmitters. The Transmitter emits a signal.

  • Thyristors

    Protek Devices

    ProTek's Thyristor Surge Suppression devices are designed to protect telecommunications equipment against lightning and transients induced by AC power lines. These devices are ideal for use in central office equipment, PBX, DSU, OCU, digital telephones, fax machines, modems and radio controlled equiment.

  • Telephone & Exchange Tester

    ETT 10 - Elektronika

    Maintenance statistics of telephone networkshave shown that for most of the failures, theexchange - line - subscriber (EXCH-LINE-TEL) sections are responsible. Accordingly, the first step of the troubleshooting procedure is to locate the breakdown spot, i.e. to find out whether thefailure source is within the exchange, the subscriber site or in the line (local loop). Thisproblem can be easily solved by theTelephone & Exchange Tester ETT 10, in most cases without requiring the technician to visit the subscriber or the junction boxes along the line.

  • Doorbell And Telephone Detector

    ELK-930 - ELK Products, Inc

    he ELK-930 performs three functions. It can detect ring activation from one or two doorbell buttons and a single telephone line. It conveniently isolates the voltage and current and produces an open collector (pull to ground) output which can be used to trigger an automation controller, relay, timer, etc.

  • Professional Cable Tester

    1EA560 - Le-tehnika, d.o.o.

    Multifuncional tester with LCD display enables to show wire maps and combination of pairs and their lenghts. It also measure the lenght until the broken line / cable. It is suitable for CAT5, CAT5E, and CAT6 cables. With special interface is also suitable for testing of coaxial and telephone cables. It has special unit for testing of cable ends in the other room.

  • Digital Signal Identification

    Tempo Communications, Inc.

    There are times when using a conventional test telephone or other device to check whether a line is "dead" before cutting it down just won't work. One example is where a cable can be carrying an "out-of-band" service, like ADSL and VDSL, which are inaudible using conventional monitoring equipment. T-Bug will specifically identify the nature of the service on a line, whether xDSL or ISDN, while the DigAlertâ„¢ probe will warn if any high frequency signal is present. Check before you cut.

  • Test Phone

    DR-700 - Daerim Electronics Co.

    1. Insulation resistance measurement(earth-state, line-cut, line-short, and telephone capacity measuring) 2. Tone & pulse dialing3. Speakerphone for hands free two way conversation4. Subscriber calling5. Last number redial6. Hook and flash function7. High impedance monitor function8. Transmitter mute switch9. Continuous polarity LED indications10. Line powered with high voltage protection11. Water-proof

  • Central Office Line Simulator

    AI-7280 - Advent Instruments Inc.

    The AI-7280 is a highly flexible central office line simulator. It is designed primarily for the testing and verification of common terminal equipment, including standard telephones, Caller ID devices, SMS (Short Message Service) capable equipment, and any device using an analog Tip/Ring interface circuit. Supplied with the TRsSim software for Windows, it can analyze a telephone''s DTMF characteristics, pulse dialing and flash timing, generate various network tones and ringing patterns. Both Type I (on-hook) and Type II (off-hook) Caller ID is supported using either FSK or DTMF data transmission. As an optional component, the TRsSim software can perform SMS testing to either the ETSI protocol 1 or protocol 2 standards.

  • LED Light Source

    FOD 113 - Fiber Optic Devices Ltd.

    The LED Light Source FOD 113 or FOD 114 is a light weight and a very small size portable device which has been created to become as popular as a cellular telephone or a pager. The devices of this series are equipped with a universal optical interface which allows quicker hook up to the line, thus saving time for complete measurements. The LED Light Sources meet TIA/EIA-526-14A requirements for coupling power into multimode fiber.

  • LED Light Source

    FOD 114 - Fiber Optic Devices Ltd.

    The LED Light Source FOD 113 or FOD 114 is a light weight and a very small size portable device which has been created to become as popular as a cellular telephone or a pager. The devices of this series are equipped with a universal optical interface which allows quicker hook up to the line, thus saving time for complete measurements. The LED Light Sources meet TIA/EIA-526-14A requirements for coupling power into multimode fiber.

  • Portable Line Tester

    DR-5 - Daerim Electronics Co.

    The DR-5 is designed for repairing line faults and installing new telephone lines, especially for the MDF in unmanned offices which do not have their own test board.1. Insulation resistance measuring2. Loop resistance measuring3. DC voltage measuring4. Terminal, Line capacity measuring5. Subscriber calling6. Dialing(Tone, Pulse type)7. Transmitting, receiving, waiting, and three way calling8. Test tone transmitting9. Four type melody soundInsulation resistance measuring range: DC180V / 50Mega OhmLoop resistance measuring range : 0 ~ 500Kilo OhmDC voltage measuring range : 0 ~ 150VRing signal Range : 20Hz / 75VPower : DC12V, AC 85~260 Free voltageDimension : 330 * 220 * 140(m/m)Weight : 3.5kg

  • Cable Tracers

    Extech Instruments Corporation

    Identifies wire pairs, check continuity and test telephone line polarity. Transmitter has output cables terminated in modular RJ11 phone connector. The non-contact amplifier probe audibly identifies the selected wire or cable so that you can easily trace from source to termination. Comes complete with Wire Tracer Probe and Transmitter with RJ11 phone connector, a pair of alligator clips and two 9V batteries.

  • Automatic Sweep Signal Generator

    GVS7116 - CRYSOUND

    GVS7116C Automatic sweep signal generator is an instrument designed for detecting various electroacoustic components (Rattle & Buzz) as well as for their dynamic tests. It is suitable for use in the R&D department, quality control department and production line of manufacturers of speakers, headphones, receivers, buzzers, and sirens, as well as for the inspection of incoming materials in factories that manufacture various electroacoustic products, such as audio factory, telephone factory, earphone factory, speaker factory, and computer multimedia factory, etc. With standard sine wave and low distortion, it is the most suitable for listening to noise from speakers.

  • Configurable Relay Matrix Module

    DP-cPCI-4341 - Data Patterns Pvt. Ltd.

    DP-cPCI-4341 is a Hot-Swappable Configurable Relay Matrix Module. The relays can be operated separately or all at once. The Form A relays can be used to switch voltage signals upto 200V DC. The inputs and outputs are brought out to the fascia for high flexibility. Use of rugged connectors for field terminations ensures long-term reliability. Applications of the module include automatic test equipment, continuity testing, audio telephone line switching and data acquisition system.

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