Layla Usman12 Real Causes, and How Australian Businesses Can Fix Them for Good
You’re mid-call with a client. Your screen freezes. Your colleagues can’t access the shared drive. The EFTPOS terminal times out. Sound familiar? Dropping internet is one of the most disruptive, costly, and frustrating problems an Australian business can face — and in most cases, it’s entirely preventable.
| $47KAverage annual cost of internet downtime for an Australian SMB | 72%Of Australian businesses experience internet dropouts at least monthly | 15hrsAverage hours of unplanned downtime per Australian SMB per year | 91%Of dropouts are caused by fixable infrastructure or plan issues |
| Quick Answer: The Most Common Causes1. Consumer-grade NBN plan not built for business workloads2. Router / modem hardware that is old, overloaded, or faulty3. NBN network congestion in your area during peak hours4. Physical cable or infrastructure damage on your premises5. No failover — a single link with no backupKeep reading for the full list, how to diagnose each cause, and the permanent solutions. |
1. You’re on a Consumer NBN Plan, Not a Business Plan
This is the single most common cause of internet dropouts for Australian businesses — and the one most people don’t realise until it’s too late. Consumer NBN plans sold by Telstra, Optus, TPG, and Aussie Broadband are designed for households streaming Netflix and browsing social media. They are not engineered for commercial workloads.
Consumer NBN plans use ‘best-effort’ traffic management — meaning your connection is deprioritised during network congestion (typically 6pm–11pm, and during school holidays). They include no SLA, no guaranteed uptime, no priority fault resolution, and no business-grade support. When they drop, you wait. Sometimes days.
| Feature | Consumer NBN Plan | BroadConnect Business NBN Plan |
|---|---|---|
| Uptime guarantee | None — best effort | 99.5%+ SLA with credit-backed remedy |
| Fault response time | Up to 5 business days | 4–8 hour priority response |
| Traffic priority | Deprioritised during peak hours | Business traffic prioritised always |
| Support | Consumer helpline (long wait times) | Dedicated AU business team, 24/7 |
| Static IP | Not included | Included — essential for VoIP & VPN |
| Cost (NBN 100) | $70–$90/month | $110–$150/month |
| Hidden cost of downtime | $47,000/yr (avg) | Minimised — SLA + rapid response |
| ✓ Fix: Upgrade to a BroadConnect Business NBN plan. The additional $30–$60 per month is a fraction of the cost of a single day’s downtime. See broadconnect.com.au/business-internet |
2. Your Router or Modem Is Outdated or Overloaded
Your router is the traffic controller for every device on your network. An old, cheap, or consumer-grade router handling 30+ simultaneous devices — laptops, phones, printers, EFTPOS terminals, smart TVs, security cameras — will overheat, slow down, and crash. Most residential routers are designed for 10–15 devices. Many Australian offices are running 40, 50, or more.
Warning Signs Your Router Is the Problem
- Internet drops out and comes back after you restart the router — the router is crashing under load.
- Speed is fine in the morning but drops by midday — the router is overheating or memory is filling up.
- Some devices connect fine while others drop — the router can’t manage multiple simultaneous connections.
- Wi-Fi signal is weak at the far end of the office — the router’s coverage range is insufficient for your space.
- Your router is more than 3–4 years old — hardware limitations are holding your connection back.
| Router Type | Max Devices | Suitable For | BroadConnect Recommendation |
|---|---|---|---|
| Consumer ISP router (supplied free) | 10–15 | Home use only | Replace immediately for any business use |
| Consumer retail router ($150–$300) | 20–30 | Very small office (1–5 users) | Acceptable short-term — upgrade within 12 months |
| Business router ($400–$800) | 50–100 | SMB 5–30 users | Recommended minimum for any business |
| Enterprise router/firewall ($800+) | 100–500+ | 30–200+ users | Required for growing businesses |
| BroadConnect Managed Router | Unlimited (segmented) | Any business size | Included in BroadConnect business plans |
| ✓ Fix: BroadConnect business plans include a pre-configured business-grade router with QoS settings optimised for your environment. No additional hardware purchase required. |
3. NBN Network Congestion in Your Area
Even if your plan and hardware are fine, NBN congestion can tank your speeds and cause dropouts — especially during peak hours. According to the ACCC Broadband Performance Report, many Australian NBN providers deliver significantly less than their advertised speeds during the busy evening period (6pm–11pm). For businesses in busy CBDs, industrial estates, or areas with rapid population growth, daytime congestion is also increasingly common.
| ⚠ Warning sign: If your internet is reliable early in the morning but degrades noticeably from 10am–2pm or after 5pm, network congestion from neighbouring businesses or residences sharing the same NBN infrastructure node is almost certainly the cause. |
| NBN Technology Type | Congestion Risk | Why | Solution |
|---|---|---|---|
| FTTN (Fibre to the Node) | High | Many businesses share one node cabinet | Upgrade to FTTP or switch to dedicated fibre |
| FTTC (Fibre to the Curb) | Medium | Better than FTTN but still shared | Business NBN plan with priority traffic |
| HFC (Cable) | Medium-High | Shared coaxial segment in your street | Business plan or dedicated fibre |
| FTTP (Fibre to the Premises) | Low | Dedicated fibre to your door | Business NBN plan sufficient for most cases |
| Fixed Wireless | High | Tower capacity shared across wide area | 4G/5G backup or satellite as supplement |
| Dedicated Fibre (EFM/DIA) | None | Private connection, not shared | Already the solution — contact BroadConnect |
| ✓ Fix: Switch to a BroadConnect Business NBN plan with traffic prioritisation, or upgrade to dedicated fibre for zero-contention connectivity. Contact us at broadconnect.com.au/contact for a free assessment. |
4. Physical Cable or Infrastructure Damage
Physical damage to the cabling inside or outside your premises is a frequently overlooked cause of intermittent internet dropouts. Unlike a complete outage, physical damage often causes an unstable connection that drops and reconnects — making it harder to diagnose.
Common Physical Causes
- Damaged wall socket or internal cabling — particularly common in older Australian buildings with deteriorating copper wiring.
- Pinched or bent ethernet cable — a cable routed under carpet or furniture that gets pinched will cause intermittent drops.
- Water ingress in the pit or conduit outside — NBN cables running through council pits or underground conduit are vulnerable to water damage, particularly after heavy rain. Common in flood-prone areas of QLD and NSW.
- Corroded copper lines (FTTN/FTTC) — older copper infrastructure deteriorates over time, especially in coastal areas with salt air corrosion.
- Accidental cuts during construction or renovations — NBN cables on premises are regularly damaged during fit-outs, drilling, and landscaping.
| ✓ Fix: If dropouts correlate with bad weather or started after building works, request a line test through BroadConnect. We’ll escalate a technician visit to NBN Co at no cost on business plans. BroadConnect business customers receive priority technician attendance. |
5. Wi-Fi Dead Spots & Wireless Interference
Many businesses assume their internet is dropping out when the actual problem is their Wi-Fi network — not the NBN connection itself. If your wired devices stay connected while wireless devices drop, Wi-Fi is the culprit.
| Wi-Fi Issue | Symptom | Cause | Fix |
|---|---|---|---|
| Single router coverage gap | Drop-outs at specific desks or rooms | Router signal too weak to reach all areas | Add wireless access points (WAPs) or a mesh system |
| 2.4GHz interference | Slow or drops in open-plan offices | Microwave, baby monitors, neighbouring Wi-Fi | Switch devices to 5GHz band or upgrade to Wi-Fi 6 |
| Too many devices on one AP | Drops when busy | Access point overloaded | Add access points, segment network by floor or team |
| Outdated Wi-Fi standard | Consistent slowness & drops | Old 802.11n or 802.11ac equipment | Upgrade to Wi-Fi 6 (802.11ax) access points |
| Channel overlap | Drops near competitor’s office | Neighbouring business using same Wi-Fi channel | Use automatic channel selection or Wi-Fi analyser |
| ✓ Fix: BroadConnect’s managed network service includes Wi-Fi access point installation, channel optimisation, and ongoing monitoring. We design the right wireless coverage for your floor plan — no dead spots, no interference. |
6. No Failover — One Link, No Backup
If your business has a single internet connection with no backup, every fault — whether it lasts 20 minutes or 3 days — takes your entire business offline. This is the most expensive infrastructure decision Australian businesses make: choosing not to invest in failover until after a major outage has already cost them thousands.
| Failover Option | How It Works | Switchover Time | Monthly Cost (AUD) | Best For |
|---|---|---|---|---|
| 4G/5G SIM failover | Router detects NBN drop, switches to 4G/5G automatically | <60 seconds | From $49/month | Most Australian SMBs |
| Dual NBN (two providers) | Two separate NBN services from different RSPs | <30 seconds | From $160/month | Offices where 4G signal is weak |
| SD-WAN (active-active) | Both links active simultaneously — traffic distributed | Instant (no switchover) | From $299/month | Multi-site, contact centres |
| 4G/5G as primary + NBN backup | 5G as main connection, NBN as failover | <30 seconds | From $179/month | Areas with excellent 5G coverage |
| Dedicated fibre + 5G failover | Fibre primary, 5G backup | <60 seconds | From $399/month | Enterprise, hospitals, finance |
| ✓ Fix: BroadConnect’s 4G/5G failover add-on starts from just $49/month and connects to your existing business router. When your NBN drops, your 5G connection takes over automatically — your team won’t even notice. See broadconnect.com.au/failover |
7. DNS or IP Address Configuration Issues
Sometimes internet dropouts aren’t dropouts at all — your physical connection is fine, but your network’s Domain Name System (DNS) or IP configuration has a problem, causing websites and cloud applications to fail to load. This is a software issue, not an infrastructure one, but it presents identically to a dropout.
How to Tell If It’s a DNS Problem
- Websites fail to load but a speed test (if you can access it by IP address) shows normal speeds.
- Some applications work (e.g. email) while websites don’t load.
- Restarting the router fixes it temporarily — your router is obtaining a new IP lease and flushing DNS cache.
- Specific domains fail while others load fine — DNS propagation or blacklisting issue.
| ✓ Fix: BroadConnect configures all business routers with redundant DNS servers (primary and secondary) to eliminate single-point DNS failures. We also provision a static IP address on all business plans, eliminating DHCP-related disconnections. If you’re experiencing this on an existing plan, contact our support team for a remote configuration audit. |
8. Your NBN Technology Type Is Working Against You
Not all NBN connections are equal. The technology type serving your building significantly affects reliability. If your premises is on FTTN (Fibre to the Node), you’re connected to the NBN via ageing copper cables running from a cabinet in your street — and those copper cables are the weakest link in the chain. According to NBN Co’s own network data, FTTN premises experience significantly more service interruptions than FTTP or HFC premises.
| Technology | Reliability Rating | Main Failure Point | Upgrade Path | BroadConnect Action |
|---|---|---|---|---|
| FTTP | Excellent | Almost none | Already best option | Maximise with business plan |
| HFC | Very Good | Shared coaxial node | Business plan prioritisation | Business plan recommended |
| FTTC | Good | Short copper tail | FTTP upgrade if eligible | Check upgrade eligibility |
| FTTB | Good | Building internal wiring | Internal audit | Cabling inspection |
| FTTN | Fair–Poor | Long copper run from node | FTTP upgrade program | Upgrade check + interim 5G |
| Fixed Wireless | Variable | Tower capacity & weather | 5G fixed wireless | 5G primary + NBN backup |
| ✓ Fix: BroadConnect can check your address for FTTP upgrade eligibility under the NBN Co Fibre Upgrade Program. Eligible businesses can upgrade from FTTN to FTTP at no cost — dramatically improving reliability. Contact us at broadconnect.com.au/contact to check your eligibility today. |
9. Too Many Devices & Bandwidth Hogs on Your Network
Even a fast NBN connection will feel like it’s dropping out if your available bandwidth is being consumed by a small number of high-demand activities — large file downloads, video streaming, cloud backups running during business hours, or a single staff member downloading a Windows update while everyone else is on a Teams call.
Common Bandwidth Hogs in Australian Offices
- Cloud backup services (Dropbox, OneDrive, Backblaze) — often default to running backups during business hours, consuming upload bandwidth and causing VoIP dropouts.
- Windows & software updates — automatic updates on multiple devices can consume 100% of your upload capacity simultaneously.
- Video streaming on staff devices — YouTube, Spotify, and streaming services running in the background consume significant bandwidth.
- Security camera systems — IP cameras uploading footage to the cloud in real time can chew through 10–30 Mbps of upload bandwidth.
- Large file transfers to cloud storage — sending multi-gigabyte project files to SharePoint or Google Drive during peak hours.
| ✓ Fix: BroadConnect configures Quality of Service (QoS) rules on your business router that automatically prioritise VoIP calls, video conferencing, and business-critical applications over background traffic. Backups and updates are throttled during business hours and released overnight. This single change eliminates dropouts caused by bandwidth saturation for most businesses. |
10. ISP-Side Network Faults & Maintenance
Sometimes the problem is entirely outside your premises — your ISP’s infrastructure, their upstream peering agreements, or scheduled maintenance on the NBN network. According to NBN Co’s network status page, planned and unplanned network outages affect thousands of Australian businesses every week. The difference between a business and a consumer plan in these situations is response time: business plans get priority fault escalation and proactive communication.
| Outage Type | Consumer Plan Response | BroadConnect Business Plan Response |
|---|---|---|
| Unplanned NBN outage | Self-service status page only — no ETA | Proactive notification + priority queue with NBN Co |
| Hardware fault at exchange | May take 3–5 business days to resolve | 4–8 hour priority escalation to NBN Co |
| Planned maintenance | 24hr notice via email (sometimes less) | Advanced notice + temporary 5G failover offered |
| Major network event (storm etc.) | Queue with all other consumers | Business priority restoration queue |
| Intermittent fault (hard to diagnose) | May be closed as ‘no fault found’ | BroadConnect engineers pursue until permanently resolved |
| ✓ Fix: BroadConnect’s 24/7 Network Operations Centre proactively monitors your connection and often identifies and escalates faults before you even notice the impact. Our business customers don’t wait on hold — they get a named engineer. |
11. VoIP Calls Dropping — It’s Not Always the Internet
If your internet seems fine but your VoIP phone calls or Microsoft Teams calls keep dropping, the issue may not be your internet connection speed — it may be latency, jitter, or packet loss on your network. These are different problems with different solutions.
| Symptom | Root Cause | How to Diagnose | Solution |
|---|---|---|---|
| Voice calls choppy or robotic | High jitter (>30ms) | Run a VoIP quality test at ping.canopy.tools | QoS configuration — prioritise voice packets |
| Calls drop after exactly 20 minutes | SIP session timeout | Check router SIP ALG settings | Disable SIP ALG on router (common issue) |
| One-way audio (you can hear them, they can’t hear you) | NAT / firewall blocking RTP audio | Test with softphone on mobile data | Configure firewall to allow RTP port range |
| Calls drop when someone prints or downloads | Bandwidth saturation | Monitor router bandwidth usage | QoS rules — throttle non-voice traffic |
| Teams / Webex video freezes then drops | Packet loss >2% | Run traceroute to Microsoft / Cisco servers | Upgrade plan or add dedicated Teams traffic path |
| ✓ Fix: BroadConnect runs a free VoIP readiness assessment for any business considering or currently using cloud calling. We test latency, jitter, packet loss, and bandwidth — and provide a written report with specific fixes. Contact us at broadconnect.com.au/contact. |
12. You’ve Simply Outgrown Your Current Plan
Businesses grow. Internet usage grows faster. The NBN 50 plan that was fine for 8 staff two years ago may now be serving 25 people running Teams calls, cloud backups, Xero, and a CRM simultaneously — and struggling badly. Bandwidth saturation looks exactly like an internet dropout from the end user’s perspective.
| Business Size | Minimum Recommended Plan | If Also Using VoIP/Teams | If Running a Contact Centre |
|---|---|---|---|
| 1–5 users | NBN 50 | NBN 100 | NBN 250 |
| 5–15 users | NBN 100 | NBN 250 | NBN 1000 |
| 15–30 users | NBN 250 | NBN 1000 | Dedicated Fibre |
| 30–75 users | NBN 1000 | Dedicated Fibre | Dedicated Fibre + SD-WAN |
| 75+ users | Dedicated Fibre | Dedicated Fibre + SD-WAN | Private network consultation |
| ✓ Fix: BroadConnect offers a free bandwidth audit for existing customers and new enquiries. We analyse your actual usage patterns and recommend the right plan — not the most expensive one. Most businesses find upgrading one speed tier eliminates 80% of their dropout complaints. See broadconnect.com.au/business-internet. |
Your Business Internet Dropout Diagnostic Checklist
Run through this checklist before calling your ISP — it will help you identify the cause faster and communicate it clearly to your support team.
| Check | How to Test | What It Tells You |
|---|---|---|
| Restart your router | Turn off for 60 seconds, back on | If this fixes it temporarily → hardware or DNS issue |
| Test with a wired connection | Plug laptop directly into router via ethernet | If wired works, Wi-Fi is the problem — not NBN |
| Check all devices or just some | Ask colleagues if they’re affected too | Isolated device = device issue. All devices = router or NBN |
| Run a speed test (fast.com or speedtest.net) | Test morning vs lunch vs evening | Speed drops at peak hours = congestion issue |
| Check NBN Co status page | nbnco.com.au/support/network-and-outages | Known outage in your area = ISP or NBN fault |
| Note when dropouts happen | Keep a log — time, duration, what you were doing | Pattern reveals cause (peak hours, weather, heavy tasks) |
| Check router temperature | Touch your router — is it hot? | Overheating router = hardware problem |
| Run a ping test during a dropout | Open command prompt: ping google.com -t | Request timeouts = connectivity loss; high ms = latency |
When to Stop Troubleshooting and Just Switch Providers
There comes a point where the time, frustration, and lost productivity spent troubleshooting a bad internet connection exceeds the cost of simply upgrading to a business-grade solution. Here are the clear signs it’s time to switch:
- You’ve had more than 3 unexplained dropouts in a single month — this is not normal for a properly configured business connection.
- Your ISP has sent technicians twice without resolving the issue — the problem is systemic, not isolated.
- Your fault response time has been longer than 24 hours — this is unacceptable for a business and is a contractual failure on consumer plans.
- Your team is regularly complaining about slow speeds — you’ve outgrown your plan.
- You’ve had a dropout during a critical client meeting, payment processing, or emergency — the risk is too high to continue on a consumer-grade connection.
| ✓ Time to switch: BroadConnect migrates businesses from their existing ISP to a business-grade connection with zero downtime in most cases. We manage the full transition and provide a temporary 4G/5G connection during the changeover period. Call 1300 880 330 or visit broadconnect.com.au/contact to get started. |
Frequently Asked Questions
Why does my internet drop out at the same time every day?
This is almost always a network congestion issue. At predictable peak times — typically 8–9am, 12–1pm, and 5–7pm — your NBN node or ISP infrastructure becomes overloaded with simultaneous users. Business NBN plans with traffic prioritisation push your connection to the front of the queue during these periods. Contact BroadConnect to discuss an upgrade.
Why does restarting my router fix the dropout?
Restarting your router clears its memory (RAM), refreshes your IP address lease from your ISP, and flushes the DNS cache. If restarting regularly fixes the problem, your router is either overheating, running outdated firmware, or is underpowered for your network load. Replacing the router with a business-grade device usually resolves this permanently.
My internet drops out when it rains — why?
Rain-related dropouts are a strong indicator of FTTN or copper cable infrastructure issues. Water ingress in the cable pits and conduit outside your premises degrades the copper signal, causing the connection to drop. This is an NBN Co infrastructure issue — BroadConnect can escalate a technician visit on your behalf. Long-term, an upgrade to FTTP or a 5G business connection eliminates this problem entirely.
Can a bad phone line cause internet dropouts?
Yes — if you’re on FTTN or FTTC, the NBN signal travels over copper telephone lines for part of its journey. A damaged, corroded, or poorly terminated phone line will cause intermittent NBN dropouts. BroadConnect can arrange a line test and technician visit to inspect and replace faulty copper cabling on your premises.
How do I know if my ISP is throttling my connection?
Run speed tests at different times of day using speedtest.net. If your speeds are consistently near your plan maximum in the morning but drop to 20–30% of that during peak hours, your ISP is likely applying traffic management. Business NBN plans are not subject to the same throttling as residential plans. BroadConnect business plans guarantee minimum speeds at all times of day.
Is it worth paying for business NBN instead of a cheap residential plan?
The average Australian SMB loses $47,000 per year to internet downtime. A BroadConnect Business NBN 100 plan costs approximately $1,500–$1,800 more per year than a residential NBN 100 plan. The return on that investment is clear. See our full comparison at broadconnect.com.au/business-internet.
| Stop Putting Up With Dropouts. BroadConnect delivers business-grade internet to Australian businesses with SLA-backed uptime, 24/7 local support, and automatic 5G failover. Get a free connectivity assessment today. Get a Free Assessment → broadconnect.com.au/contact Call 1300 880 330 |
Related Articles from BroadConnect
Business NBN & Internet Plans: The Complete 2025 Guide
5G Business Internet in Australia: Speed, Reliability & Use Cases
SD-WAN for Australian Businesses: Is It Right for You?
Why Are My Office Phone Calls Dropping? (VoIP Troubleshooting Guide)
© 2025 BroadConnect · Australia Wide · broadconnect.com.au · 1300 880 330 · hello@broadconnect.com.au | NBN® is a registered trademark of NBN Co Limited.