How to Set Up a Phone System for a New Australian Business

Setting up a phone system for a new Australian business does not need to be complicated or expensive. The right setup depends on your team size, how you work, and what impression you want to give callers. This guide covers every option -- from a virtual number on your mobile for $10/month through to a cloud phone system for a small office -- with real AU pricing and practical steps to get started. By the end, you will know exactly which option fits your situation and what to do first.

Do You Even Need a "Phone System"?

Yes -- even if you are just one person. A phone system does not mean a rack of equipment in a server room. It means having a dedicated business number that is separate from your personal mobile, with some basic call handling: voicemail, after-hours messages, and the ability to forward calls.

Think about it from a caller's perspective. If someone rings your personal mobile, they have no idea whether they are calling a business or someone's personal number. There is no hold music if you are busy. No after-hours message telling them when you are open. No way to route calls to another person if you hire someone. That is not a phone system -- that is a mobile number, and it costs you credibility every time someone calls.

The good news: a basic business phone system costs $5-15/month including GST. That is less than a Foxtel subscription for a setup that looks professional from day one.

Option 1 -- Virtual Phone Number Plus Mobile App (Sole Traders and Micro Businesses)

This is the starting point for most new Australian sole traders and micro businesses. You get a dedicated business number -- either a local number (02, 03, 07, etc.) or a 1300 number -- that rings through to an app on your existing mobile. Calls, voicemail, and after-hours messages are all handled through the app. Your personal number stays completely separate.

What it costs: Typically $5-15/month including GST for a basic virtual number with a mobile app. 1300 numbers cost more -- usually $20-40/month plus per-minute call charges. A local geographic number is cheaper and fine for most sole traders.

What you get:

• A dedicated business number callers can ring
• Voicemail with a professional greeting
• After-hours message (tells callers when you are back)
• Calls go to your mobile -- no second phone needed
• Call recording on some plans

What you do not get: Ring groups (multiple phones ringing at once), IVR menus, or the ability to transfer calls between team members easily. That is fine for one person. If you hire someone, you will want to upgrade.

This works best for: trades, consultants, therapists, cleaners, freelancers -- anyone who works alone and just needs a professional number that does not cost much.

Option 2 -- Cloud Phone System With Desk Phones (Offices With Two or More People)

Once you have two or more people who need to take calls, a virtual number app is not enough. You need a cloud phone system -- sometimes called a hosted PBX or VoIP phone system. This is a proper business phone system that runs over your internet connection instead of the old copper landline network.

Cloud phone systems give you everything a traditional office phone system had -- ring groups, hold music, call transfers, voicemail, IVR (press 1 for sales, 2 for support) -- but without the expensive hardware and the technician visits to change settings. Everything is managed through a web dashboard.

What it costs: Typically $25-50 per seat per month including GST. A three-person office will pay around $75-150/month. That includes your phone numbers, calls, and access to the cloud platform. Desk phones are extra -- budget around $150-400 per phone depending on the model.

What you get:

• Unlimited or large call bundles (AU calls included in most plans)
• Ring groups -- all phones ring at once when a call comes in
• Call transfer between team members
• Hold music and on-hold messages
• IVR menus (automated attendant)
• Voicemail to email
• Call recording
• Softphone app -- staff can use their mobile or laptop, no desk phone required

The softphone option means your team does not need to be in the office to use the phone system. Calls from a staff member's mobile look like they are coming from the office number. This is particularly useful for tradies with office staff, or businesses where some people work from home.

For a deeper dive into how cloud phone systems compare to traditional setups, see VoIP vs Traditional Phone Australia.

Getting a Business Phone Number -- Local, 1300, or 1800?

When you set up a business phone system, you need a number for callers to reach you on. You have three main options in Australia:

Local geographic number -- These are standard Australian numbers with a geographic area code (02 for NSW/ACT, 03 for VIC/TAS, 07 for QLD, 08 for WA/SA/NT). They look like a regular landline number. Callers in your state pay a local call rate. Cheap to run -- usually included in your phone plan or very low monthly cost. Good choice for most small businesses that serve a local area.

1300 numbers -- These are national numbers. Callers pay a local call rate from anywhere in Australia. You pay the rest (the differential between a local call and what the call actually costs to route). Good for businesses that serve customers nationally and want to present as a national business. Costs more to run -- typically $20-40/month plus per-minute charges on incoming calls. ACMA regulates how 1300 numbers are allocated and used. See 1300 Numbers Australia for full details.

1800 numbers -- Freecall. The caller pays nothing. You pay for all incoming calls. Costs more to run than 1300. Best suited to customer service operations where callers might be reluctant to call if they have to pay. Not usually the right choice for a small business starting out -- the cost adds up quickly.

What should a new business get? For most new Australian small businesses, a local geographic number is the right call. It is cheap, it is familiar to customers, and it signals that you are based in a specific area (which is actually a positive for local service businesses). If you are trading nationally from day one, a 1300 number makes sense. Skip 1800 until you have significant inbound call volume and a clear reason for freecall.

You can always add a 1300 number later. Your existing number can be ported to a new provider or kept as a secondary number.

Setting Up After-Hours and Voicemail (Why This Matters From Day One)

After-hours handling is the thing most new business owners skip because it feels like a detail. It is not a detail. It is the difference between a caller who leaves a message and calls back, and a caller who hangs up and calls your competitor.

At a minimum, every business phone should have:

• A professional voicemail greeting: Your business name, a brief note that you will call back, and your hours if relevant. Not your personal 'leave a message' recording.
• An after-hours message: A short message that plays outside your business hours telling callers when you are open and/or directing them to your website or email.
• Voicemail to email: Most cloud phone systems will email you a recording of new voicemails. This means you see them immediately -- in your inbox, with a subject line including the caller's number -- rather than having to remember to check your voicemail.

These are basic settings in any modern phone system and take about 10 minutes to configure. Set them up on day one. Callers form impressions fast, and a business that goes straight to a generic mobile voicemail or does not acknowledge after-hours calls looks like it is not serious.

What It Costs at Each Level

Here is a summary of typical AU pricing (all including GST) so you can plan your budget:

• Virtual number plus mobile app (sole trader): $5-15/month. No desk phone needed. Calls to your mobile. Local number included.
• Virtual number with 1300: $20-40/month plus per-minute inbound charges (typically $0.05-0.12/minute including GST).
• Cloud phone system (per seat): $25-50/seat/month. Includes calls, voicemail, ring groups, softphone. Desk phones extra ($150-400 each).
• Cloud phone system (2-person office, total): Approximately $80-150/month for the service, plus a one-off phone purchase if using desk phones.

For a detailed calculation based on your specific team size and needs, use the VoIP Cost Calculator. It will give you a monthly cost estimate for your situation.

Check Your Internet First

Every modern business phone system runs over your internet connection. Unlike the old copper landline network, your phone calls travel as data packets over your NBN or business internet service. This means your internet quality directly affects your call quality.

Before committing to any cloud phone system, check that your internet connection can handle it. The key metric is upload speed -- most cloud phone systems need around 100 kilobits per second (kbps) of upload bandwidth per simultaneous call. That is not a lot -- a standard NBN 25 plan has 5 megabits per second (Mbps) upload, which can handle around 40 calls at once. But if your internet is slow or your connection is shared with other heavy users (video streaming, large file transfers), you can run into problems.

Two things to check before you set up:

1. Your connection type: Fibre (FTTP or HFC) gives the most stable call quality. Fixed wireless and satellite NBN can introduce latency and jitter that degrades call quality. See NBN VoIP Compatibility Australia for a full breakdown by connection type.
2. Your upload speed and available bandwidth: Run a speed test during business hours (not at 2am) and compare it to what your office needs. Use our VoIP Bandwidth Calculator to check your connection.

Also worth knowing: when the NBN power goes out, your internet goes out -- and your VoIP phones go with it. If you are in an area with frequent power outages, a UPS (uninterruptible power supply) for your modem and phone equipment is worth considering. For more on this, see PSTN Shutdown Australia and what the end of the copper network means for business phone continuity.

Step-by-Step: Getting Your First Business Phone System Set Up

Here is a practical sequence to get your business phone system running:

1. Decide on your option: Sole trader working alone? Start with a virtual number plus mobile app. Two or more people? Get a cloud phone system from the start -- it is much harder to migrate later without disrupting customers.
2. Choose your number type: Local geographic number for most businesses. 1300 if you serve customers nationally and want to look national. Avoid 1800 until you need it.
3. Check your internet: Run a speed test and use the bandwidth calculator. If your connection is marginal, sort your internet first -- your phone system depends on it.
4. Sign up with a cloud phone provider: Most providers let you sign up online, choose your number, and be live within a few hours. Do not lock yourself into a long-term contract for your first year -- month-to-month plans exist and are worth the small premium while you are figuring out what you need.
5. Configure your basics: Set up your voicemail greeting, after-hours message, and call forwarding rules before you give anyone the number. This takes 20-30 minutes and makes a big difference.
6. Port your existing number if you have one: If you have been using a mobile or landline number as your business number, you can transfer (port) it to your new provider. This takes 5-10 business days in Australia. Keep your old service active until the port completes. For details on the process and what can go wrong, see Number Porting Australia.
7. Test everything: Call your own number from a different phone. Check your voicemail plays correctly. Make a test call out. Check your after-hours message is triggering at the right times.
8. Tell your contacts: Update your email signature, website, Google Business Profile, and any business cards or stationery with the new number.

What Most Businesses Get Wrong When Setting Up a Phone System

Three mistakes come up consistently when new Australian businesses set up their phone system for the first time:

Mistake 1 -- Starting with a desk phone instead of a service. The instinct is to buy a phone. But the phone is the last thing you need to think about. First, choose your service provider (the cloud phone system that manages your calls). Then choose your number. Then, if you need a physical phone at all, choose the handset. Buying a desk phone first is like buying furniture before you have signed a lease -- you do not know if it will fit the space. Many businesses use softphone apps on their existing laptops and mobiles for the first 6-12 months without ever buying a desk phone.

Mistake 2 -- Locking into a long-term contract without testing first. Most Australian cloud phone providers offer month-to-month plans. Some offer discounted annual contracts -- those discounts are real, but do not take them until you have used the service for a few months and are confident it does the job. Getting out of a 24-month contract you regret is painful. Start month-to-month, lock in annually once you are happy.

Mistake 3 -- Not setting up after-hours handling before going live. The most common gap in new business phone setups: the number goes live, it rings during business hours, but calls outside hours go to a generic voicemail or ring out entirely. Set up your after-hours message before you give anyone the number. It takes 10 minutes. Every call outside business hours is a potential customer forming an impression of your business -- make it a good one.

Your Next Steps

A practical checklist to get your new business phone system running:

• Decide: sole trader app or cloud system? (Team size is the deciding factor)
• Choose your number type: local geographic, 1300, or 1800
• Run a bandwidth check on your internet connection before committing to a provider
• Sign up on a month-to-month plan for the first 3-6 months
• Configure voicemail greeting, after-hours message, and call forwarding before going live
• If you have an existing business number: initiate a port -- allow 5-10 business days
• Test: call your own number, check voicemail, make a test outbound call
• Update email signature, website, Google Business Profile, and business cards
• Revisit your plan at 6 months -- upgrade to a cloud system if you have hired anyone

Do I need a physical phone, or can I use my mobile?

You can absolutely use your mobile -- in fact, that is what most new Australian sole traders do. A virtual number app routes calls to your existing smartphone. You answer business calls from your mobile, but callers see your business number (not your personal mobile). Desk phones are worth adding when you have staff who are based in a fixed office location, or when you want a more professional presence for reception.

How long does it take to get a new business phone number?

For a new number (not porting an existing one), you can typically be live within a few hours of signing up with a cloud phone provider. Most providers allow you to choose your number online and activate it immediately. If you are porting an existing number across from another provider, that takes 5-10 business days in Australia -- the exact timeline depends on the losing provider and the number type.

What is the difference between a cloud phone system and a VoIP phone?

VoIP (Voice over Internet Protocol) is the underlying technology -- it means making calls over the internet instead of the old copper phone network. A cloud phone system is a complete business phone service built on VoIP technology. It includes your phone numbers, call routing, voicemail, ring groups, IVR menus, and a management dashboard. When people say they are 'getting VoIP', they usually mean signing up for a cloud phone system. See What is VoIP Australia for a plain-English explanation.

Can I keep my existing landline number when I move to a cloud phone system?

Yes -- this is called number porting. You transfer your existing number to your new provider. The process takes 5-10 business days in Australia and requires you to submit a port request with your existing provider's account details. Keep your old service active until the port completes -- if you cancel early, your number can be lost. For a full guide to the process and common pitfalls, see Number Porting Australia.

What happens to my phone system if the internet goes down?

If your internet connection fails, your cloud phone system will not work for calls made from your office. Incoming calls will typically go to voicemail (which is hosted in the cloud, not on your premises). Most cloud phone systems let you set a 'failover' number -- usually a mobile -- so incoming calls automatically forward to your mobile if your main connection goes down. Set this up during initial configuration. It is a 2-minute task that matters a lot when your NBN has a bad day.

Is a 1300 number better than a local number for a small business?

Not necessarily. A 1300 number signals that you are a national business and lets callers ring you at local call rates from anywhere in Australia. But it costs more to run (monthly fee plus per-minute inbound charges), and for a local service business, a geographic area code can actually build trust -- customers recognise the area code and know you are local. For most new small businesses serving a local or regional area, a local geographic number is the right starting point. Add a 1300 number when you are actively serving customers nationwide. See 1300 Numbers Australia for full cost and regulatory details.

Do I need to worry about the PSTN copper network being switched off?

If you are setting up a new business now, this is not a concern -- you will be starting on a modern cloud phone system that runs over your NBN connection, not the old copper network. The PSTN (copper landline) network has been progressively switched off across Australia since 2025. Any new phone service you sign up for today is already on the modern network. The switchoff mainly affects businesses that were still on old Telstra copper services and had not yet migrated. See PSTN Shutdown Australia for the full background.