Struggling with VoIP over NBN in your home or business? Our technicians provide same-day NBN fibre phone setup, configuration and troubleshooting across Melbourne.
Did you know? The majority of NBN VoIP setup problems we see in Melbourne are caused by incorrect SIP registration settings, incompatible routers, or QoS not being enabled — issues that a qualified technician can resolve in under an hour.
Computer Cures specialise in NBN VoIP setup, installation and troubleshooting across Melbourne. Whether you’re setting up VoIP on NBN for the first time, migrating your existing phone system, or dealing with persistent call-quality issues, we can help you get everything working reliably.
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When the NBN replaced traditional copper phone lines across Australia, millions of households and businesses lost their standard PSTN phone service. The solution — and the modern standard — is VoIP (Voice over Internet Protocol): making phone calls through your internet connection instead of a copper line.
Setting up a VoIP phone on NBN sounds simple in theory, but in practice it involves configuring your NBN modem/router, selecting a compatible VoIP adapter or handset, registering SIP credentials with your provider, and tuning Quality of Service (QoS) settings to ensure crystal-clear call quality. When any of these steps is missed or misconfigured, you get dropped calls, one-way audio, echo, or — the most common complaint — your VoIP simply not working at all.
New VoIP Setup on NBN
End-to-end setup of your VoIP service on any NBN connection type — FTTP, FTTN, FTTB, FTTC, HFC or Fixed Wireless.
NBN VoIP Troubleshooting
Diagnosing and fixing dropped calls, no dial tone, one-way audio, echo, and registration failures.
Fibre Phone Migration
Moving your existing phone number from copper to NBN VoIP, including number porting assistance.
Business Phone Systems
Multi-line business VoIP phone system setup including hosted PBX on NBN.
Router Configuration
Configuring your NBN router for optimal VoIP performance with proper QoS prioritisation.
Dental & Medical Practices
Specialist VoIP setup for dental practices and healthcare clinics on NBN.
While your NBN provider’s self-install guide might make VoIP setup look straightforward, there are several critical steps that, if skipped, will result in poor call quality or no service at all. Here’s how our technicians approach an NBN VoIP installation:
Different NBN technologies (FTTP, FTTN, HFC, Fixed Wireless) behave differently for VoIP. We verify your connection type, test speeds, and measure latency, jitter, and packet loss to ensure optimal call quality.
We check whether your router supports VoIP, confirm UNI-V port availability on your NBN device, and determine if an ATA (Analogue Telephone Adapter) is required.
We configure SIP server details, login credentials, ports, and codecs (G.711, G.729) correctly on your router or ATA using your VoIP provider’s settings.
We prioritise voice traffic on your network to prevent call dropouts or poor quality caused by streaming, downloads, or other internet usage.
We perform call tests, verify audio quality, confirm number porting, and ensure emergency calling functionality is correctly configured.
We walk you through your setup, provide documentation, and ensure you understand how to use your new VoIP system with ongoing support available.
If your NBN VoIP setup is not working, the problem almost always falls into one of the following categories. Click each issue to learn what causes it and how it’s fixed.
| NBN Type | Built-in VoIP Port | ATA Needed? | Common Issues |
|---|---|---|---|
| FTTP (Fibre to the Premises) | Yes – UNI-V port on NCD | Usually No | UNI-V not activated by ISP |
| HFC (Coaxial Cable) | Sometimes | Sometimes | Voice port activation required |
| FTTN / FTTB / FTTC | No | Yes | ATA config, SIP ALG, NAT |
| Fixed Wireless NBN | No | Yes | Latency, packet loss on windy days |
| Satellite (Sky Muster) | No | Yes | High latency (600ms+), not recommended for VoIP |
⚠️ Important: NBN Satellite (Sky Muster) & VoIP: Due to the inherently high latency of satellite internet (typically 600ms round-trip), standard VoIP over Sky Muster NBN is unreliable and often unsupported by carriers. If you’re on satellite NBN, we recommend discussing alternative phone solutions with our team.
Tip from our technicians: Before calling us, try these quick checks if your NBN VoIP is not working: (1) Power-cycle your NBN NCD and router. (2) Plug your ATA or IP phone directly into your router — bypass any switches or powerline adapters. (3) Check your VoIP provider’s system status page for outages. (4) If you have a second phone, try plugging it in to rule out a faulty handset. If none of these help — that’s when to call us.
Emergency number: When setting up VoIP on NBN, always verify with your provider that emergency 000 calls are supported and that your service address is correctly registered. This is a legal requirement under ACMA rules and your VoIP provider must provide 000 access.
Once your NBN connection is stable and correctly configured, the choice of VoIP provider is critical to ongoing call quality and reliability. We work with all major Australian VoIP carriers and can advise on which provider best suits your usage pattern — whether you need a simple single-line residential service or a multi-line hosted PBX solution for your business.
Key factors to evaluate when choosing a VoIP provider for NBN:
Codec support — G.711 gives better quality; G.729 uses less bandwidth. Your provider should support both.
Number porting — Ensure your provider can port your existing landline number (including 03 Melbourne numbers).
000 emergency access — Mandatory in Australia, but verify it’s active on your specific plan.
SIP trunk quality — Cheaper providers may use lower-quality SIP trunks that introduce latency and jitter.
Support availability — Australian-based support is invaluable when troubleshooting VoIP on NBN.
Our team provides independent advice on provider selection as part of our VoIP setup service — we have no commercial relationship with any provider and recommend only what’s right for your situation.
Many of our NBN VoIP customers also benefit from these services:
Our technicians travel to all Melbourne suburbs for NBN VoIP setup and troubleshooting. Find your area below:
Yes, in most cases your existing geographic phone number (including 03 Melbourne numbers) can be ported to your new VoIP service. The porting process typically takes 2–5 business days and is managed between your old carrier and your new VoIP provider. We can assist with number porting coordination as part of our NBN VoIP setup service.
Not necessarily. If your NBN connection device has a built-in UNI-V port (common on FTTP connections), you can plug in any standard analog phone. If your NBN type doesn’t include a voice port, you’ll need either an ATA (Analogue Telephone Adapter) — which lets you use your existing analog phones — or a dedicated IP phone that connects directly via ethernet. We can advise on the right hardware for your specific setup.
This is an important consideration. Unlike the old copper phone network (which carried its own power), VoIP on NBN requires your NBN NCD, router, and ATA (if used) to have power. If there’s a power outage, your VoIP phone will not work unless you have battery backup (UPS) for your networking equipment. ACMA rules require NBN RSPs to inform customers of this limitation. We recommend a small UPS for customers who rely heavily on their phone service.
VoIP uses surprisingly little bandwidth — a single G.711 call uses approximately 87 kbps, and a G.729 call uses around 31 kbps. Even the slowest NBN plans (12/1 Mbps) can handle multiple simultaneous calls from a bandwidth perspective. The real requirement is low latency and low jitter — ideally under 150ms one-way latency and under 30ms jitter for comfortable voice quality. NBN FTTN connections with high line attenuation can sometimes struggle here.
Our NBN VoIP setup service starts from a flat-rate call-out fee. The total cost depends on complexity — a straightforward single-line ATA setup is quicker than a multi-line business system requiring QoS configuration and number porting coordination. We provide a clear quote before any work begins. Call us on 1300 553 166 for an estimate based on your specific situation.
Whether you’re setting up VoIP on NBN for the first time or troubleshooting an existing issue, our Melbourne technicians are ready to help — same day in most suburbs.
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