Lumos Speed Test
This diagnostic utility validates the throughput of your Lumos Fiber connection. Because Lumos operates a pure fiber network, your speed test results should be incredibly consistent regardless of the time of day. Unlike "Hybrid" networks used by cable companies, Lumos delivers Symmetrical Bandwidth, meaning your upload speed is provisioned to match your download speed exactly.
Understanding Your Speed Metrics
When analyzing your connection integrity, focus on these three performance vectors:
Download Throughput:
• 1 Gig Plan: Wired speeds should hit ~940 Mbps (overhead limit).
• 2 Gig / 5 Gig Plans: You will only see full speeds if you have a PC with a 2.5GbE or 10GbE Network Card plugged into the specific multi-gig port on the router. Standard equipment will physically cap these plans at 1 Gbps.
Upload Throughput: This is the primary health indicator.
• Normal: Symmetrical (e.g., 940 Mbps Down / 940 Mbps Up).
• Faulty: If your download is fine but upload is <100 Mbps, restart your ONT. This asymmetry often indicates a "stuck" session on the Optical Line Terminal (OLT).
Latency (Ping): Lumos fiber typically delivers 3ms to 8ms latency to local servers. This is physically faster than cable (20ms+) or 5G (30ms+). If ping is high, something in your house is saturating the upload bandwidth.
What Results Should You Expect?
The "Adtran vs. Calix" Hardware Factor
Your hardware setup dictates your testing strategy. Benchmarks include:
Adtran SDG (Service Delivery Gateway): Common in newer installs. These are Wi-Fi 6 units. Look for the Multi-Gig LAN Port (often blue or labeled 2.5G) for testing speeds above 1 Gbps.
Calix GigaSpire (u6 / u10): Managed Wi-Fi routers. If you cannot access the local admin page, use the Lumos App to run a "Speed to Gateway" test.
Separate ONT: In some homes, you have a small white box (ONT) on the wall that converts fiber to Ethernet, which then feeds the router. Troubleshooting often requires rebooting both units.
Why Is Your Lumos Connection Slow?
Before calling support (855-465-8667), verify these common premise-level faults:
The "Fiber Bend": The thin yellow or white optical cable is extremely fragile. If you pushed a bookshelf against it and created a "pinch point," light cannot pass through, causing speed to drop to near zero or the connection to flap.
Device Limits: Testing a 1 Gig connection on an old laptop or a cheap phone is the #1 cause of "slow speed" tickets. If your device only has a 2x2 Wi-Fi 5 antenna, you will never see speeds above 450 Mbps.
Mesh Node Placement: If you use Lumos Total Home Wi-Fi (Mesh), ensure satellite units are not too far apart. A "Red" light on a mesh node means it has lost connection to the main router.
Lumos Technical Configuration Data
| Parameter | Configuration Details |
| Router Hardware | Adtran SDG 8000 Series / Calix GigaSpire |
| Gateway IP | 192.168.1.1 (Adtran/Calix) |
| Admin Username | admin |
| Admin Password | Printed on the router sticker (Case Sensitive) |
| Status Light | Solid Green (Service OK) / Red "Optical" (Line Cut) |
How to Get an Accurate Test
Wireless testing cannot validate Multi-Gigabit fiber.
To confirm the actual speed delivered to your home, connect a Cat6 Ethernet cable directly from the LAN 1 port of the main router to a laptop. Close all cloud backup apps (OneDrive/Dropbox). If this wired test shows symmetrical speeds matching your plan, your fiber line is healthy.
When to Call Support
Escalate the issue to Lumos support if you observe these specific failures:
Red "Optical" or "Alarm" Light: This indicates the fiber signal is not reaching your home (Physical line cut).
No Light on ONT: If the wall-mounted ONT has no lights, the power supply or battery backup unit has failed.
Speed Mismatch: If you are paying for 1 Gig but wired tests consistently show exactly 100 Mbps, you likely have a damaged Ethernet cable.
You can manage your account and troubleshoot via the Lumos Website or by calling 855-GO-LUMOS (855-465-8667).