Comporium Speed Test

This diagnostic utility validates the throughput of your Comporium connection. To interpret your results, you must first confirm if you are on the Zipstream (Fiber-to-the-Premise) network or the standard HFC (Cable) network. While both can deliver "1 Gigabit" download speeds, the underlying technology dictates your latency, upload capability, and stability during neighborhood peak hours.

Understanding Your Speed Metrics

When analyzing your connection integrity, focus on these three performance vectors:

Download Throughput:
• Zipstream (Fiber): Speeds are extremely consistent (1, 2, or 5 Gbps). You should see ~940 Mbps on a wired 1 Gig connection.
• Standard Cable: Speeds are "Best Effort." If you pay for 600 Mbps but get 400 Mbps at 8 PM, this is typical "Node Congestion" on a DOCSIS network.

Upload Throughput: This is the definitive test to identify your line type.
• Zipstream: Symmetrical. 1 Gbps Down = ~1 Gbps Up.
• Cable: Asymmetrical. A 1 Gbps download plan might only have 50 Mbps upload. If you are a content creator, this is your bottleneck.

Latency (Ping): Zipstream users should expect <15ms to regional hubs (Charlotte/Columbia). Cable users will typically see 25-45ms. If you see "Jitter" >30ms on Cable, check for loose coaxial connections.

What Results Should You Expect?

The "Arris vs. Calix" Hardware Factor

Your modem hardware tells the story of your potential speed. Benchmarks include:

Arris DG3450 / DG9450 (Cable): These are DOCSIS 3.1 gateways. The DG9450 has a 2.5 Gbps port (often marked with a red line or separate color) required for plans >1 Gbps.

Calix GigaSpire (Zipstream): Used for Fiber. If you have the "u6" or "u10" model, you are Wi-Fi 6 ready. These units are managed via the cloud, meaning local troubleshooting is limited.

Plume Pods: If you are testing via Wi-Fi connected to a satellite Plume Pod, speeds will typically cap at 300-450 Mbps due to the wireless hop to the main router.

Why Is Your Comporium Connection Slow?

Before calling support (888-403-2667), verify these common premise-level faults:

US/DS Blinking (Cable): On Arris modems, if the "US/DS" (Upstream/Downstream) lights are blinking instead of solid, the modem cannot lock onto the signal. This is usually caused by a loose coaxial cable or a bad splitter.

Frozen Plume Pod: Sometimes a pod gets "stuck" negotiating with the main router. Unplugging the pod from the wall for 30 seconds often restores full speed to that room.

Buried Drop Damage: In many Comporium service areas (Rock Hill/Fort Mill), landscaping crews often nick shallow fiber lines. If your Zipstream service dies completely after yard work nearby, your drop is likely cut.

Comporium Technical Configuration Data

How to Get an Accurate Test

Wireless testing via Plume pods is unreliable for validating Gigabit speeds.

To confirm the actual speed delivered to your home, connect a Cat6 Ethernet cable directly from the main Arris or Calix gateway (not a Plume pod) to a laptop. This isolates the ISP connection. If this wired test matches your plan, the issue is your mesh pod placement.

When to Call Support

Escalate the issue to Comporium support if you observe these specific failures:

Blinking Globe (Arris): The modem has upstream/downstream sync but cannot get an IP address. (DHCP Failure).

Red Optical Light (Calix): On fiber units, a red optical light means the physical glass line is broken.

Speed Mismatch: If Zipstream upload speed is persistently <100 Mbps, it indicates a provisioning error on your account profile.

You can check for outages and troubleshoot via the Comporium Website or by calling 888-403-2667.