New Feature: Offline Reasons and Times for ONTs

Header image for announcement of new offline reasons and times feature in Preseem

See Why and When ONTs Are Offline at a Glance

We’re excited to announce a new feature that makes supporting your fiber customers faster and easier. Preseem now shows ONT offline reasons and times directly in the Subscriber view.

ONT Offline Reason

When a fiber customer’s ONT goes offline, you’ll now see the specific reason right in Preseem—whether it’s a power issue at the customer’s location or a fiber cut. No more switching between different vendor systems to find this critical information.

Screenshot of ONT Offline Reason in Preseem.

Why This Matters

Your support teams can now:

  • Resolve issues faster by immediately understanding the root cause of an outage
  • Provide better customer experiences with instant access to accurate information
  • Work more efficiently without logging into multiple vendor platforms

How It Works

The offline reason appears automatically in the Subscriber view whenever an ONT is offline. We’ve normalized this information across different vendors, so your team sees consistent, clear reasons regardless of which equipment you’re using.

Currently supported vendors:

  • Calix
  • BDCOM
  • Ubiquiti
  • Adtran

ONT Offline Times

Preseem now also displays ONT offline times for faster, more effective support across OLT vendors.

Previously, identifying the exact moment an ONT went offline required navigating multiple vendor-specific tools. Preseem now provides this critical information directly, allowing your support team to diagnose and resolve issues quickly.

Screenshot of ONT Offline Times in Preseem

What’s New:

  • Inline Timing: The relative time an ONT went offline (e.g. “10m ago”) is now displayed directly in the ONT Overview.
  • Full Detail on Hover: Hovering over the relative time reveals the precise timestamp.
  • Faster Triage: Immediately know when an outage began, enabling your support team to initiate troubleshooting sooner.
  • Better Correlation: Easily match outage times across multiple ONTs or an entire PON, helping to identify broader network incidents.
  • Less Tool Switching: Access critical timing information directly within Preseem, reducing the need to consult external vendor consoles.
  • Vendor Support: This supports Calix and BDCOM OLTs. Support for Adtran and Ubiquiti is coming soon.

How to Use:

  • Open any ONT displaying an “Offline Reason” such as Power Off or Signal Lost.
  • Locate the inline time in the overview section.
  • Hover over the time to view the full timestamp.

Part of Our Platform Vision

This feature reinforces our commitment to simplifying multi-vendor, multi-access network management. By bringing critical troubleshooting information from all your different systems into one place, we’re helping you deliver exceptional service while reducing operational complexity.

Your network may be complex, but supporting your customers doesn’t have to be.

Take a Preseem Product Tour

Preseem collects experience metrics from subscriber traffic and combines them with metrics from equipment such as OLTs and ONTs to provide operators with the information they need to be proactive and reduce support costs. Take one of our interactive product tours to see how.

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