Internet dropouts are one of the most disruptive home tech problems — particularly during video calls, streaming, online banking, or telehealth appointments. And yet most troubleshooting guides offer the same generic advice: restart the router, call your provider. Neither solves the problem if you haven’t correctly identified what’s causing it first.
The most important thing to understand is that “internet dropping out” can mean completely different things — and the fix depends on identifying the pattern before touching anything. This guide starts with a simple test that splits 80% of dropout problems into the correct bucket immediately.
Step 1: Is it the Wi-Fi or the NBN line? (Do this first)
Wi-Fi dropouts and NBN line dropouts feel identical from the user’s perspective — the internet just stops. But they have completely different causes and completely different fixes. Spending an hour on the wrong one is frustrating and pointless. This test separates them in under two minutes:
The wired vs wireless test:
- Get an Ethernet cable (the thick internet cable — check behind your TV, computer or router)
- Plug it from the router directly into a laptop or computer
- Turn Wi-Fi off on that device
- Wait for the next dropout to happen
Wired connection stays up ✓
The NBN line is fine. The problem is your Wi-Fi — router placement, signal strength, interference, or router hardware. See our Wi-Fi problems guide for the specific fix.
Wired connection also drops ✗
The dropout is happening at the NBN/router level — not the Wi-Fi. Continue reading for pattern-based diagnosis of the actual cause.
If the problem is Wi-Fi only — the most common scenario — see our Wi-Fi coverage guide and our Wi-Fi and mesh network setup service. The rest of this guide addresses dropouts that happen even on a wired connection.
Diagnose by dropout pattern — each means something different
Before calling your ISP or changing anything, spend two or three days noting when the dropouts occur. The pattern tells you the cause — which tells you exactly what to ask for when you do call.
Drops out at the same time every day (often evenings)
Most likely cause: ISP network congestion. Your internet provider oversells bandwidth in your area, meaning that when everyone gets home from work and starts streaming at 6–9pm, the network slows or drops. This is extremely common in heavily populated Melbourne suburbs.
What to do: Run a speed test at nbnco.com.au/speedtest during the dropout period, and again at 2am when the network is quiet. If speeds are dramatically different, this is congestion. Contact your provider — they can check congestion data for your area. If the issue is persistent, switching to a provider with better infrastructure in your suburb is often the only fix.
Random dropouts — no pattern, any time of day
Most likely cause: line fault, failing hardware, or unstable router. Random dropouts with no time pattern usually indicate a physical issue — either a problem with the NBN line between your home and the network, a failing router, or on FTTN connections, a degraded copper phone line. See the NBN connection type section below for specifics.
What to do: Log the exact time of each dropout. Most providers require evidence of a pattern before they dispatch a technician. Three or more recorded dropouts in a week, with timestamps, is usually enough to escalate to a line test.
Brief flickers — drops for 10–30 seconds then reconnects
Most likely cause: router renegotiating the connection. Short dropouts that auto-recover are often the router briefly losing its authentication with the ISP and renegotiating. Can also be caused by a router overheating and briefly throttling, or a marginal line signal on FTTN. Check that your router has adequate ventilation — routers placed in enclosed cabinets or near other heat-generating equipment overheat more than people realise.
What to do: Move the router to an open, ventilated location. Check the router’s firmware is up to date (log into the admin page — usually 192.168.0.1 in your browser). If the router is 5+ years old, the hardware may be failing. See the NBN setup guide for router compatibility notes.
Drops when it rains or after heavy rain
Almost always an FTTN line fault. Water ingress into the copper phone line network causes signal degradation, leading to connection drops during and after rain. This is NBN Co’s infrastructure — your provider can’t fix it directly, but they can lodge a fault with NBN Co. Keep a record of which rainfall events coincide with dropouts.
What to do: Call your provider and specifically say: “My internet drops out during or after rain. I believe there is water ingress in the copper line. I need a fault lodged with NBN Co.” This specific language triggers the correct escalation path and typically results in an NBN Co field technician checking the pit or node near your property.
Dropout causes specific to your NBN connection type
As covered in our NBN setup Melbourne guide, the five NBN connection types have different infrastructures — and different failure modes. Check your connection type at nbnco.com.au before calling your provider.
| Connection type | Common dropout cause | Who fixes it |
|---|---|---|
| FTTP | NTD box fault or fibre line damage. Very stable otherwise — dropouts are uncommon and usually indicate a genuine hardware fault in the NBN equipment. | ISP → NBN Co technician visit (free) |
| FTTN | Degraded copper line, water ingress, or signal-to-noise ratio (SNR) issues. The most dropout-prone NBN type. Distance from the node matters significantly. | ISP lodges fault with NBN Co for line test |
| HFC | Area congestion during peak hours. HFC is a shared medium — neighbourhood usage affects individual speeds and stability. Also: NTD box overheating. | ISP for congestion complaints; NBN Co for NTD faults |
| FTTC | DPU (pit unit) faults. Generally more reliable than FTTN. Dropouts often indicate a DPU issue requiring NBN Co inspection. | ISP lodges fault with NBN Co |
| Fixed Wireless | Weather interference (heavy rain, wind), tower congestion during peak hours, or antenna misalignment. Drops more frequently than wired NBN types. | ISP for congestion; NBN Co for antenna realignment (free) |
Router and home network causes
If the wired test confirmed the dropout is happening at the router level (not the NBN line), or if you’re dealing with Wi-Fi-specific dropouts, these are the most common causes:
Router overheating
Routers placed in enclosed TV cabinets, on top of other equipment, or in confined spaces frequently overheat and briefly drop connections before recovering. The fix is simple: move the router to an open location with space around it. Routers also accumulate dust over 3–5 years — a dust buildup inside the router case (common in older units) can cause the same overheating issue. If you’ve had your router for 5+ years, it may be time to replace it regardless.
Wi-Fi channel congestion from neighbours
In dense Melbourne suburbs — apartments, townhouses, older suburb streets with many houses close together — dozens of Wi-Fi networks overlap. If many nearby routers are broadcasting on the same Wi-Fi channel, they interfere with each other. Log into your router admin (usually 192.168.0.1 in your browser → Wireless settings) and change the Wi-Fi channel. For 2.4 GHz, channels 1, 6 and 11 are the only non-overlapping options. Try each until you find the least congested one.
Too many devices on the network
Modern homes easily have 20–30 connected devices: phones, tablets, laptops, Smart TVs, streaming devices, smart speakers, security cameras, printers, and smart home gadgets. Budget routers supplied by ISPs are often only designed to handle 10–15 devices reliably. If simultaneous heavy use (multiple video streams + calls) triggers dropouts, the router is being overwhelmed — an upgrade to a quality router or mesh system is the fix.
IP address conflicts
If two devices on your network are assigned the same IP address, they conflict and one or both lose connectivity intermittently. This is usually caused by a combination of devices with static IP addresses and the router’s DHCP range. Symptoms: one specific device drops repeatedly while others are fine. Fix: on the device that keeps dropping, go to its network settings and set it to obtain an IP address automatically (DHCP) rather than using a fixed address.
What to tell your ISP — the language that gets action
ISP support calls are notoriously frustrating because first-line support often follows a script: restart the router, check cables, wait 24 hours. If you call without evidence and without using the right language, this is what you’ll hear. Here’s how to escalate efficiently:
Before you call — prepare this information:
- 📋 Dates and times of each dropout (minimum 3 incidents)
- 📋 Whether the dropout affects wired devices too (not just Wi-Fi)
- 📋 Your NBN connection type (FTTN, FTTP, HFC, FTTC, Fixed Wireless)
- 📋 Speed test results during a dropout if you managed to capture one
The phrases that trigger escalation:
“I have confirmed the dropout affects a wired connection, not just Wi-Fi.”
This tells them it’s not a Wi-Fi issue and moves the conversation past basic troubleshooting.
“I need a line test conducted on my NBN connection, not just a router restart.”
For FTTN especially — a remote line test can identify signal quality issues without a technician visit.
“I have recorded [X] dropout incidents with timestamps. I’m requesting this be escalated as a persistent fault.”
Evidence of multiple incidents triggers the “chronic fault” pathway at most providers, which has different (faster) SLAs than a first incident report.
“The dropouts correlate with rain events, which suggests water ingress in the copper line.”
This is specific and actionable — it tells the support agent exactly what fault to log with NBN Co.
If your ISP’s first-line support keeps sending you in circles, ask to be escalated to the Technical Faults team (or Level 2 support). You can also check whether there’s a known outage or fault in your area on the NBN Co service status page before calling — if there’s an area fault already logged, calling won’t speed it up but at least you’ll know it’s not your equipment.
Frequently asked questions
Brief dropouts specifically during video calls are almost always a Wi-Fi issue rather than an NBN problem. Video calls are more sensitive to packet loss and brief signal drops than browsing or streaming, which can buffer. Test by doing a video call with the device plugged into the router by Ethernet — if it stays connected, the problem is Wi-Fi signal quality between your device and the router. See our Wi-Fi coverage guide for the fix.
This is very common — providers often run a remote line test when everything is stable, find no active fault, and close the ticket. The problem recurs when conditions change (peak hour, rain, etc.). The key is capturing evidence during an actual dropout. If possible: during the next dropout, call the provider immediately — the fault will be active and their diagnostics will show it. Alternatively, if you have a smartphone, you can run a speed test via mobile data at the exact moment the home internet drops — screenshot both the time and result to prove a pattern. We can also set up network monitoring software that logs every dropout automatically.
It depends on the cause. If the dropouts are due to your provider’s network congestion — yes, switching to a provider with less overselling in your area can make a significant difference. If the cause is a physical fault with the NBN line or hardware (line fault, NTD issue, degraded copper) — no, switching providers won’t fix it because the underlying NBN infrastructure is the same regardless of provider. The wired vs Wi-Fi test and the dropout pattern help identify which category you’re in before you invest in switching.
If only specific devices drop while others stay connected, it’s almost never an NBN line issue — it’s device-specific Wi-Fi. Common reasons: the dropping devices are further from the router (weaker signal), they’re connecting on the 5 GHz band which has shorter range, or they have older Wi-Fi hardware that handles interference poorly. The iPad Wi-Fi guide and Smart TV Wi-Fi guide cover device-specific fixes.
Yes — we visit Melbourne homes for internet dropout diagnosis regularly. We run the wired vs Wi-Fi test, identify the dropout pattern, check router health and placement, and either fix the home network issue or prepare you with the exact fault evidence and language needed to get your ISP to act. If a new router or mesh system is needed, we advise on the right equipment and set it up. Our rate is $89/hr with no call-out fee across all Melbourne suburbs. Call 0435 955 429 or book online.
Still dropping out after trying these fixes?
We come to your home, run a proper diagnosis, fix what’s fixable, and arm you with the right evidence and language to escalate to your ISP. $89/hr, no call-out fee, all Melbourne suburbs.
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