What is the best business landline alternative in Australia before the copper switch-off?
For most Australian businesses, the practical replacement for a copper landline is a business VoIP or cloud phone system delivered over the NBN or another suitable internet connection. The right choice depends on how many people answer calls, whether staff work remotely, and how much phone-system control you need.
If your business still uses copper, do not wait for the disconnection notice. The timing is location-specific, and affected services may have a limited migration window before the old fixed-line service is disconnected. nbn says businesses should switch affected phone and internet services before disconnection.
When will landlines be phased out in Australia?
There is no single national date when every Australian landline will stop working. The copper switch-off depends on your premises, the nbn technology available there and whether your service is covered by an exception.
For businesses in the nbn fixed-line footprint, existing fixed-line phone and internet services are being migrated to the nbn network. nbn says affected premises can have up to an 18-month “ready for service” window before disconnection, so the date on your provider’s notice matters more than a general national deadline. nbn explains the migration window for affected services.
Copper landlines may remain available in some nbn Fixed Wireless and Sky Muster satellite areas. Some business services, including certain “Special Services”, can also follow different migration arrangements. Confirm your address and service type with your phone or internet provider.
The important decision is not whether the copper line might work for a little longer. It is whether your business can afford to wait until the old service is close to being disconnected.
What is replacing landlines for Australian businesses?
Business VoIP is the main replacement for a copper landline. It carries calls over an internet connection instead of a traditional circuit-switched phone line.
The simplest version gives you a business number and a handset or app. A more complete cloud phone system adds extensions, call queues, transfers, call routing, voicemail-to-email, business SMS and mobile access. Nexgen’s cloud phone system options show how the same service can support desk phones, softphones and mobile users.
Your customers can usually keep calling the same local, 13, 1300 or 1800 number, subject to number portability and service eligibility. The ACMA’s phone-number porting rules require providers to explain whether a number can be retained when moving to the NBN.
A business landline alternative in Australia can therefore look like one of four setups:
| Option | Best for | What you get | Main point to check |
|---|---|---|---|
| NBN voice service | One or two users with simple needs | A phone service connected through compatible NBN equipment | Features and portability vary by provider |
| Hosted VoIP line | Small teams replacing basic landlines | Business numbers, handsets or apps and basic call features | Internet quality and support |
| Cloud phone system | Teams needing extensions and call handling | Queues, transfers, routing, voicemail and remote access | User setup and call-flow design |
| Mobile or 4G/5G backup | Continuity during internet or power problems | A backup path for calls | Coverage, data limits and failover setup |
| On-site IP phone system | Businesses with specialised phone hardware | Local control over phones and call management | Hardware, maintenance and migration cost |
The table is a starting point, not a recommendation. Your current number, handsets, alarm equipment and internet connection all affect the safest migration path.
Should I switch from a landline to VoIP?
Yes, if your business needs a phone service that can move with your team and support modern call handling. VoIP is usually the most straightforward long-term option when a copper service is being retired.
A hosted VoIP system can let staff answer the main business number from a desk phone, computer or mobile app. It can also make it easier to add users, change call routing and support hybrid work without installing new copper lines.
However, VoIP depends on the internet and powered network equipment. nbn states that equipment connected through the nbn network will not work during a power blackout unless you have an alternative power or communications arrangement. nbn’s power-blackout guidance recommends checking emergency arrangements and affected devices before switching.
For a business, that means your decision should include:
- whether your NBN connection is suitable for voice traffic
- whether your router and phone equipment have backup power
- whether calls can fail over to mobiles or another connection
- whether your provider offers support during outages
- whether alarms, EFTPOS, fax or lift phones use the old line
Do not assume every analogue device will work on a new VoIP service. Nexgen’s Cloud Voice service information specifically excludes some analogue devices, including EFTPOS, back-to-base alarms and outbound faxing. Check these services separately before cancelling the copper line.
Is an NBN business phone system better than a basic VoIP line?
A basic VoIP line is usually enough when one person answers one number. An NBN business phone system is a better fit when calls need to reach several people or follow a defined process.
The difference is control. A basic line may replace the old landline but still leave you manually forwarding calls. A cloud phone system can direct callers to the right person, allow staff to answer from different locations and keep voicemail in a shared business workflow.
| Business need | Basic VoIP line | Cloud phone system |
|---|---|---|
| One business number | Yes | Yes |
| Desk phone | Usually | Usually |
| Mobile or desktop app | Sometimes | Usually |
| Extensions | Limited | Yes |
| Call queues | Limited or no | Yes |
| Interactive voice menu | Usually no | Available |
| Voicemail-to-email | Sometimes | Usually |
| Remote and hybrid work | Basic | Stronger fit |
| Central administration | Limited | Yes |
| Best for | Sole operators and very small teams | Growing or multi-user teams |
If you only need a replacement for a single copper number, avoid paying for features you will not use. If customers regularly wait for answers, ask for transfers or speak with different departments, choose a system that can manage those calls properly.
Nexgen’s small-business phone systems are designed around this decision: replacing a simple line where that is enough, or moving to a fuller system when the business needs more control.
Can I keep my existing business landline number?
In many cases, yes. Number porting allows an eligible existing number to move to the new provider instead of forcing you to publish a new number.
Do not cancel the copper service first. The old service should remain active until the new arrangement is ready and the transfer plan has been confirmed. ACMA says providers must tell customers whether they can keep their number and must not disconnect before the NBN service is operational.
Porting can involve checks around the number type, service address, account details and the current provider. Some business numbers or special services may need additional review.
The mechanics belong in a separate guide. See our guide to VoIP number porting for the process, documents and timing. This article focuses on choosing the replacement, not repeating the porting steps.
Ask your provider these questions before signing:
- Can you port every number we currently use?
- What happens if one number cannot be ported?
- When will the new service be tested?
- Can the old service remain active until the cutover is confirmed?
- What is the fallback if the transfer is delayed?
A realistic provider should explain interruption risks rather than promise that every switch will be invisible.
What should I check before choosing a business landline alternative?
Start with the way your business handles calls today. The old copper line may be doing more than ringing one handset.
Write down:
- every number customers use
- how many people answer calls
- whether calls need to ring multiple phones
- whether staff answer calls away from the office
- what happens when nobody answers
- which devices share the phone line
- what internet connection is available
- what backup exists during an outage
Then decide whether you need a simple replacement or a complete phone-system migration.
Your internet connection matters because voice calls share the connection with other business traffic. If the office regularly uploads large files, uses cloud applications or hosts video meetings, ask whether the proposed service includes voice prioritisation, a suitable business-grade connection or a backup path. Nexgen’s business internet services can be assessed alongside the phone system rather than as a separate afterthought.
Also check the physical phones. Some existing handsets can be reused with an adapter or compatible service. Others need replacement IP phones. Keeping old equipment may reduce the initial change, but it can limit call features and make future support harder.
Is mobile-only a good alternative to a copper business landline?
Mobile-only calling can suit a sole trader or a business where every customer already contacts an individual. It is less suitable when customers need one stable number, shared answering or a professional call path.
| Setup | Strength | Limitation |
|---|---|---|
| Individual mobiles | Simple and familiar | Customers may not know who to call |
| One mobile for the business | Low setup effort | Calls depend on one person and one device |
| Business mobile numbers | Portable and flexible | Less central control than a phone system |
| VoIP mobile app | Keeps business calling on staff mobiles | Depends on internet, app settings and device management |
| Cloud phone system with mobile access | Shared number and structured call handling | Requires planning and user setup |
Mobile coverage should also be tested inside the premises, not just outside. A mobile backup is useful only if it works where staff need to answer calls.
For many small businesses, mobile access is best used as part of a cloud phone system rather than as the entire replacement. Staff can keep using their mobiles while the business retains one main number and a consistent call flow.
How can I move from copper without disrupting the business?
Plan the replacement before the disconnection date, but do not cancel the old service until the new service has been tested. A controlled migration is more realistic than assuming every change will happen with zero interruption.
A sensible decision sequence is:
- confirm the copper service and expected disconnection date
- list numbers, users, handsets and connected devices
- choose between a basic VoIP line and a cloud phone system
- confirm internet capacity and backup arrangements
- check number-porting eligibility
- configure users, greetings and call routing
- test inbound, outbound, transfer and voicemail functions
- schedule the cutover with a fallback contact method
- update public contact details only after calls work
- close the old service after confirmation
Keep the first design simple. A clear main greeting, sensible ring groups and voicemail are more useful than features nobody maintains.
If you need a deeper explanation of hosted systems, see our cloud phone system guide. It covers how cloud calling works and which features may suit different business setups.
What is the safest business landline alternative for my business?
For most Australian businesses still on copper, the safest starting point is a hosted VoIP or cloud phone system with number porting, tested internet connectivity and a practical backup plan. A basic VoIP line suits simple calling; a cloud system suits teams, shared numbers and flexible work.
Do not choose on price alone. Check number retention, outage handling, support, compatible equipment and the exact service included. Then arrange the change while the copper service is still available.
Nexgen can help you assess the options and plan the migration. Talk to Nexgen about porting your existing business numbers and moving off copper with a cutover plan designed to minimise disruption.
Frequently asked questions
When will landlines be phased out in Australia?
There is no single national switch-off date for every premises. Your provider or nbn will confirm the relevant migration and disconnection timing for your address.
What is replacing landlines?
Business VoIP and cloud phone systems are the main replacements. They use an internet connection and can support desk phones, computers and mobiles.
Can I keep my existing business number when moving to VoIP?
Often, yes, if the number is eligible for porting. Keep the old service active until the new service and transfer have been confirmed.
Will a VoIP phone work during a power outage?
Usually not unless the required network and phone equipment has backup power or calls can fail over to another connection. Plan for emergency calling and check any alarms, EFTPOS equipment or lift phones before the copper service is disconnected.