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A plug-and-play fiber monitoring solution


SmartOTU is an easy-to-deploy, scalable solution that monitors fibers used in all types of optical networks.

Maintaining fiber integrity is critical, yet outages are still one of the major causes of network disruption, incurring millions of dollars of lost revenue. And, incidents of accidental dig-ups, vehicle collisions, and sabotage multiply as fiber moves deeper into data centers and storage area networks. Combining a Viavi Solutions optical time domain reflectometer (OTDR) with advanced optical-switch technology, SmartOTU monitors fibers longer than 150 km in all directions. Modular in design, it monitors both dark and lit fiber and it is ideal for network security protection, pinpointing events such as fiber tapping to a few tenths of a decibel. SmartOTU is a standalone remote fiber test solution that can be deployed right out of the box with no training or IT configuration required. SmartOTU does not require any additional server or software applications —a simple web browser is enough to access all functionality including mapping. SmartOTU displays the exact GPS location of a fault on widely-available, cloud-based mapping such as Google, Bing, or legacy GIS. SmartOTU is fully compatible with the Viavi optical network monitoring system (ONMSi) and can be upgraded to be a comprehensive remote fiber test system as the network grows

Key Benefits

  • Reduce mean-time-to-repair — locate faults in minutes instead of hours
  • Reduce OpEx — eliminate erroneous dispatches
  • Anticipate service disruptions — detect degradation before it affects service
  • Quickly detects and locates fiber intrusion for 24/7 network protection



Key Features

  • Easy-to-use interface with Web browser access
  • E-mail and SMS notifications
  • SNMP interface
  • Secure communication (HTTPS) on reques
  • Solid-state disk, dual power feed, low power consumption
  • Instantaneous view of current OTDR measurement
  • Deploy right out of the box — no server or local PC required
  • Fault localization on cloud-based apps or legacy GIS
  • Auto pulse adjustment for near-end fiber faults
  • Compatible with the Viavi optical network monitoring system (ONMSi)


  • Optical fiber monitoring
  • Proactive maintenance
  • Fiber security —tap detection
  • Plant optimization



viavi-smartotu-datasheet [PDF, 558.63 KB]
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