OneExpert DSL (ONX-580)

Modular test system for, xDSL, Copper, FTTx and WiFi Services

Consistently achieve high-performance results when deploying fast broadband service to the home.

Accelerate Gigabit Broadband deployment! OneExpert DSL, ONX-580 Family, helps field technicians fix problems—the first time. The multi-touch, user-friendly interface and OneCheck automated tests ease complex tasks with clear pass/fail results. And, its future-proof modules ensure years of use supporting access and home networks. The modular platform scales to fit both outside plant and in-home use cases at the right price point with three models: the service focused ONX-580A, the standard ONX-580 with copper and service testing, and the new ONX-580P for advanced copper and service test. All models can support FTTH and WiFi testing.


  • Modular platform scales for new WiFi, fiber, and xDSL technology including VDSL Profile 35b and
  • OneCheck automates field tests and simplifies Copper and DSL results to consistently close jobs correctly
  • One-button OneCheck TDR auto identifies fault types and locations right away
  • Prove the true customer experience with a standardized TrueSpeed™ test (RFC-6349)
  • Three ways to test throughput (Ookla, SpeedCheck and Broadcom Speedtest)


  •, VDSL (vectoring and bonding), and ADSL networks
  • Copper, TDR, spectral tests
  • Fiber, wifi, coax, and wiring test and installation
  • Web, video, VoIP, TrueSpeed verification and troubleshooting

Key Features

  • Test and ADSL2+/VDSL2 including bonded and vectored pairs, copper, POTS, and coax/HPNA
  • Multi-touch, friendly user interface leverages user experience from smartphones and tablets
  • Multiple options for one button speed testing including Ookla and TrueSpeed™
  • StrataSync cloud-enabled architecture provides easy asset management and test data management

This product is StrataSync enabled
StrataSync is a hosted, cloud-based solution that provides asset, configuration, and test data management for VIAVI instruments and ensures all instruments have the latest software and options installed.

Stratasync Enabled

  • Ookla Speedtest Option

    Fiber to the Home (FTTH) and technologies are helping service providers get Gigabit per second broadband services to residential customers, increasing their service quality expectations. With increasing broadband service speeds and prices, end-users want proof that they’re getting the promised service speed.

    Speedtest by Ookla is a familiar and trusted method for many end-users to check their service speed, but a premises technician typically doesn’t carry around the beefy hardware required to perform a legitimate Ookla test (desktop PC or laptop with a network card capable of handling the gigabit speeds), because it is costly, and unwieldy.

    • Confirm installation or repair service quality before you leave the job. Directly validate Quality of Experience.
      • Reduce call-backs and improve customer satisfaction
    • No complex setup parameters required. A single button press launches Speedtest by Ookla, optimized for Gigabit class services
    • Cut precious job time, especially if multiple speed tests needed
    • Same test application your customer is already using. No need to translate your results to a format the end-user can understand
      • Effective customer education reduces service calls and improves customer satisfaction scores
    • No complex server setup or IT integration efforts needed. Speedtest by Ookla utilizes the extensive Ookla server infrastructure already in place for public use, automatically selecting the best server to use at test run-time
      • Save the cost of purchasing server hardware, software and maintenance
      • Save opportunity cost–concentrate on business-critical activities vs. building and maintaining a distributed server infrastructure

    As part of the test industry’s widest speed test portfolio, Viavi offers an innovative and optimized approach to bring residential service technicians the comfort and familiarity of Speedtest by Ookla, at gigabit class speeds through a simple software option upgrade for the OneExpert family of communications testers. Works with ONX-580, ONX-580A, ONX-580P, ONX-620, and ONX-630.

  • DSL Helper Option

    OneExpert Embedded Tech Support
    Installation and service technicians are facing a growing range of technology challenges in the local access environment. Along with this, they are typically the least experienced, least trained work group. OneExpert goes a long way toward meeting these challenges, with automated test processes and pass/fail result lists, but in many cases less experienced techs could use some help understanding what things mean. 

    The DSL Helper option gives techs clear explanations for DSL results in a popup that can be accessed in the manual test mode. The context sensitive help info is easily accessible by scrolling through results and pressing “OK” when a measurement result is highlighted.

    Over time the technician will become familiar with terms and the meaning of results – so DSL Helper can augment your in-house training program. When techs understand the tests and results, this leads to a more successful outcome for installation and service calls, and fewer call-backs. Works with ONX-580, ONX-580A, and ONX-580P.

  • Smart Access Anywhere Option

    Remote Access to OneExpert
    Occasionally a technician may face an unfamiliar and challenging situation in the field. With Smart Access Anywhere, a coach, an expert, or senior technician can remotely control an ONX in the field from his laptop or smart device from any location with a secured IP connection.

    The Smart Access Anywhere application instills confidence in field workforce knowing they have ready access to support that can coach them regardless of their location. Service Providers can incur revenue quicker, reduce repeat truck rolls, and keep customers happier by solving problems with the first tech on site. Works with ONX-580, ONX-580A, ONX-580P, ONX-620, and ONX-630.

Software Download

  • VIAVI Care Support

    * 5-year plans only; if applicable

    View Support Plans On New Equipment

    Factory Repair

    VIAVI Solutions is a single-source supplier for all of your factory and on-site test equipment repair, maintenance, and calibration service needs.

    We offer return-to-factory, fixed-rate repair services for all VIAVI test equipment. Fixed-rate repair provides the best turnaround time, streamlining the overall repair process and creating a very predictable and reliable repair experience at the best pricing.

    Our technicians ensure that your equipment is functioning properly by completing any maintenance and install enhancements,  including engineering change notice updates.

    Find out more about our Factory Repair Services

    Factory Calibration

    Keeping your equipment in top-running shape with factory or onsite calibration services helps ensure your network will continue to operate at peak performance. A variety of options allow you to manage the logistics of calibrating your equipment, while maximizing your maintenance investment. Performing regular calibration of equipment ensures the accuracy of its measurements. Improper calibration, however can compromise a network and impact services.  

    Keep your equipment in top-running shape with VIAVI On-site Services that help to ensure your network continues to operate at peak performance. It's the most cost-efficient and effective way to maintain equipment on a timetable that meets your requirements.

    Find out more about our Calibration Services

    Self-Paced Training

    VIAVI offers self-paced technical and product training as a flexible, efficient, and cost-effective training delivery option. Self-paced training offers a flexible training option for small groups of employees or those located remotely or in multiple locations. It’s an ideal training solution for instructing technicians who work in the field and cannot attend on-site classes.

    Find out more about our Training Services

    Priority Service

    VIAVI Care Plan Priority Services and Technical Expert Application Center (TAC) Service Levels for Field Portable Instruments used to test fiber, cable TV, xDSL, metro and wireless networks

    All customers enjoy Standard Plus support during the product warranty period and can upgrade to Premium TAC by purchasing a VIAVI Care Support Plan.

    The hallmark of our test platforms is evolving, modular test features to allow customers to keep pace with advancing communications technologies. The learning process is not just “one and done,” and field teams often have high rates of turnover.

    Find out more about our Priority Services

    Battery / Bag Replacement Coverage
    Batteries and bags wear out with daily use and charge cycles. To ensure these items don't slow you down, our 5 year plans include a replacement over the life of your 5 year plan.

    VIAVI will provide a one-time replacement of bad battery and worn soft bag/glove within the duration of a 5-year SilverCare or MaxCare Support Plan. Replacement will only be replaced when the instrument is returned to VIAVI for repair or calibration service. Hard cases are excluded, and coverage is not applicable for instruments sold without bag/battery.

    This coverage is Included in 5 year Silver and MaxCare Plans

    Technical Assistance
    The VIAVI Technical Support team can assist you in using/configuring products or address issues regarding product performance.

    Visit our Technical Assistance section for more information.

    MaxCare Accessory Replacement Coverage
    Instrument products come with accessory cables and connector tips. To ensure reliable, accurate testing we will cover the replacement of one accessory annually, to ensure good test results.

    When an accessory has been determined to be defective or faulty, VIAVI will, at no charge to customer, either repair the accessory or exchange at VIAVI’s discretion. Exchanged accessories may be new or refurbished. All returned accessories become property of VIAVI. The following limitations apply: no more than one accessory may be exchanged per 12 month period; applicable accessories include only those accessories that are considered essential to the operation of the instrument and were shipped with the original purchased product. The Customer is responsible for shipping faulty accessory back to VIAVI when there is a concern or during a calibration or repair service event.

    Express Loaner
    Now you can schedule calibrations or repairs with no downtime. The Express Loaner Service provides you with a similarly configured piece of equipment before sending yours in for calibration or for that unexpected repair that you need immediately.

  • VIAVI Care Support for Existing Equipment



    FleetCare plans can be customized to include any service entitlements on your fleet of existing equipment. Please fill out a Service Contracts form for a quote.

    • Any collection instruments with a single coterminous renewal date
    • Each contract is customized with any number of annual terms required by the customer
    • Onsite Calibration, Training, Field Application Engineer days can be added

    View Brochure

Training Courses

Support at Every Step

We provide support, services, comprehensive training and the resources you need. It’s all part of what we do to maximize the value of your VIAVI investment.

Let Us Help

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