Optical Network Tester (ONT)

The VIAVI Lab & Production tools help bring products to market faster, without compromising quality.

The VIAVI ONT Product Family supports testing and verification for new high-speed network elements across a wide range of technologies and scenarios. Our test platforms help manufacturers scale to meet the growth demands of network-driven services, while accounting for ever-evolving technology.

All application modules share the same GUI and identical automation and scripting, so that they can be used throughout the product development cycles.

  • Detailed hardware level testing with unframed and protocol based traffic.
  • 25G, 50G, 100G and 400G Optical Modules validation: electrical lanes stressing (clock offset variation, TX pre-emphasis and RX equalization manipulation, dynamic skew) per IEEE standards, MDIO/I2C management interface verification (peek/poke, HW pins control, MDIO/I2C Dump)
  • Support for OTN, Ethernet, Fibre Channel, CPRI, and SONET/SDH
  • Qualify PTP (IEEE 1588) implementations in optical networks and equipment
  • Full service disruption and latency measurements for all supported technologies
  • Equipment Manufacturers: Support for R&D, SVT (system verification/test), and production environments covering the entire product life cycle
  • Service Providers: Conduct product qualification and benchmark testing before deployments and bring to the field for first office applications (FOA)
  • Data Centers: Fully verify data center interconnect elements and long-haul transmission elements for quality and performance and fully stress and verify pluggable optics including active optical cables.

  • Multiple mainframe options including rackmount, desktop, and modules with built-in display for mobile test needs.
  • Supports testing of all major transport technologies for equipment manufacturers, service providers, and data centers
  • OTN: up to OTU4 with ODU Muxing down to ODU0; ODUflex, ODU multichannel, and FlexO
  • Ethernet: Gigabit Ethernet up to 400 GE and FlexE fully supported with full stress/margin analysis
  • SDH/SONET: 155 Mbps up to 40G
  • Fibre Channel: 1/2/4/8/10/16G FC
  • CPRI unframed and framed testing: CPRI line bit rate option 1 (614.40 Mbps) up to option 9 (12.165 Gbps)
  • Most accurate latency and service disruptions measurements for OTN, Ethernet, CPRI, Fibre Channel, and SONET/SDH
  • Browser-oriented graphical user interface (GUI)
  • Full multitasking operation
  • Full automation support via CLI or with drivers and libraries for LabWindows CVI, LabView, Python and Tcl/Tk


800G FLEX Module


Highly configurable, multi-protocol, multi-port test platform for R&D and system verification of optical transport ICs, modules, and systems
ONT 800G FLEX Module

ONT 800G FLEX Module

Accelerate development for PAM-4 based products and flexible services up to 800G

ONT N-PORT Test Module

The VIAVI ONT N-PORT module is a 4-port solution for test and system verification of 100G-class products. It supports four native, fully independent QSFP28 or SFP28 ports. Test applications include Ethernet, OTN, and Fiber Channel.
800G FLEX Module

ONT FlexE Software

Software Options for ONT 800G FLEX Modules
800G FLEX DCO Module

ONT 800G FLEX DCO Module

Industry’s First Fully Integrated Test Product for Pluggable Digital Coherent Module Development, Validation, and Integration


Simplify and accelerate high-speed network test in lab and production
800G FLEX Module

ONT OTUCn and FlexO

OTUCn and FlexO Software Options for 800G FLEX and 800G FLEX DCO Modules
 ONT 800G FLEX XPM Module

ONT 800G FLEX XPM Module

Industry’s first fully-integrated test product for pluggable 800G transponders based on 100G electrical lane speed

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.

Value add services that compliment your VIAVI system solution and instrument portfolio to provide a total cost of ownership

Customer Service that provides Return Material Authorization (RMA) for repair and calibration

Technical education solutions, product training, and blended learning for technicians who are using new products or working with existing tools

Technical Assistance Center to assist you in using/configuring products or address issues regarding product performance

Ask an Expert

Contact us for more information or to receive a price quote. We have the experts to give you the right answer for any of your questions.