If you've been putting your personal mobile number on invoices, business cards, or your Google listing, you've probably already felt the downside: calls at dinner time, no professional greeting, and no way to hand the number to a new staff member when you scale up. A virtual phone number in Australia solves this cleanly: a dedicated business number that isn't tied to a SIM card, a desk, or a single device, so it can ring through to whoever's available, wherever they're working.
This guide walks through exactly how to get a virtual phone number in Australia, what you'll need before you start, what it costs, and how to avoid the setup mistakes that cause the most support calls we see at CSPRO.
What Is a Virtual Phone Number?
A virtual phone number is a phone number that runs over the internet instead of a fixed copper line or a physical SIM card. Technically, it's a form of Voice over Internet Protocol (VoIP), sometimes called a DID (Direct Inward Dialling) number- that can be answered on a desk phone, a laptop, a mobile app, or all three at once.
Because the number lives in the cloud rather than on a device, it can follow your business rather than a piece of hardware. If a staff member changes phones, moves to the office, or works from home three days a week, the number doesn't need to change with them; only where it's routed does.
Why Australian Businesses and Individuals Are Switching to Virtual Numbers
- Professional first impression: a dedicated business number (with a proper greeting, hold music and business hours) reads as more established than a personal mobile.
- No hardware lock-in, no desk phones to buy, no SIM cards to manage, no cabling required.
- From work anywhere, calls can be answered on a laptop or the provider's mobile app from home, a client site, or overseas.
- Easy to scale, adding a new starter or a new department usually means adding an extension, not ordering new hardware.
- Better call handling features like call forwarding, call waiting, call transfer, and voicemail-to-email are standard rather than a paid add-on.
Types of Virtual Phone Numbers Available in Australia
1. Local (Geographic) Numbers
These carry a standard Australian area code (02, 03, 07, 08) tied to a state or region. They're the natural choice if you want to look locally based to customers in Sydney, Melbourne, Brisbane or Perth, even if your team works remotely.
2. Virtual Mobile Numbers
A virtual mobile number looks like a standard 04xx Australian mobile number but isn't tied to a physical SIM. It's useful for customer-facing roles, sales, field service, and recruitment, where staff need to give out a mobile-style number without using their personal phone.
3. 1300 and 1800 Numbers
1300 numbers cost the caller a local call rate and suit businesses wanting one memorable number nationwide. 1800 numbers are free for the caller and suit service, support or sales lines where you want to remove any barrier to calling.
4. International and Multi-Region Numbers
If you sell into other markets, a virtual number in that country lets overseas customers call a local number while the call still reaches your Australian team, useful for businesses expanding beyond Australia without opening an overseas office.
How to Get a Virtual Phone Number in Australia: Step-by-Step
Step 1: Work Out What You Actually Need
Before comparing providers, decide whether you need a single number for a sole trader, a shared line for a small team, or a full call-queue setup with an auto-attendant for a growing business. This decision drives everything else, including cost.
Step 2: Choose a Provider
You can buy a virtual number directly from a VoIP vendor, or get it bundled into a managed VoIP phone system where the number, the call handling, and the ongoing support are all one service. For a business that doesn't want to become its own phone-system administrator, the bundled option is almost always the better long-term choice; it's the difference between owning a phone number and owning a working phone system.
Step 3: Select Number Type and Area Code
Choose local, mobile-style, 1300, 1800, or international based on the use cases in Step 1. Most providers let you search for available numbers by area code or city, and reserve one instantly once you've verified your details.
Step 4: Complete Verification
For Australian local and mobile-style numbers, expect to confirm your identity and, for a business number, your ABN and registered address. This is a standard part of Australia's telecommunications numbering rules; it protects against number misuse, and it's a one-off step, not an ongoing hurdle.
Step 5: Set Up Call Routing, Voicemail and Extensions
This is where a virtual number becomes a working phone system rather than just a number. At minimum, set up: business-hours routing (so calls after hours go to voicemail or an after-hours message), extensions for each staff member or department, and voicemail-to-email so nothing gets missed. If your team uses Microsoft Teams or a CRM, this is also the point to connect the number so calls and voicemails show up where your team already works.
Step 6: Port Your Existing Number
If you already have a business number on a landline or with another provider, you can usually port it across rather than starting fresh with a new one. Porting keeps your existing marketing, signage, and customer familiarity intact; it typically takes a matter of days rather than weeks, but it's worth planning for so there's no gap in service.
Step 7: Test Before You Go Live
Call the new number from a mobile and a landline, check that routing and voicemail work as expected, and confirm call quality from your actual office or home-office internet connection, not just from the provider's demo environment. Fix anything now, before customers are dialling the number.
How Much Does a Virtual Phone Number Cost in Australia?
Pricing varies by provider, number type, and how much call handling you need, but as a general guide: a basic single virtual number with standard features typically sits in the low tens of dollars per month, while a fuller managed VoIP setup with multiple extensions, call queues, and support scales up from there based on the number of users. 1300 and 1800 numbers usually carry their own separate call-rate charges on top of the base number fee. The most reliable way to get an accurate figure is to ask a provider to quote against the specific setup from Step 1, rather than comparing headline “from” prices between providers.
Virtual Number vs Traditional Landline vs Full VoIP Phone System
|
| Traditional Landline | Standalone Virtual Number | Managed VoIP Phone System |
| Tied to a physical line/device | Yes | No | No |
| Works from any device, anywhere | No | Yes | Yes |
| Call routing, voicemail, extensions | Limited/none | Basic | Full |
| Ongoing support included | Rarely | Rarely | Typically yes |
| Best for | Fixed single-site office | Solo operators, simple needs | Growing or multi-site teams |
Is a Virtual Phone Number Right for You?
If you're a sole trader or small team wanting a professional line without hardware, a growing business that needs staff to work from more than one location, or an established company replacing an ageing landline system, a virtual phone number is very likely the right move. The main exception is a business with very specific compliance or call-recording requirements that need a purpose-built solution. In that case, it's worth a short IT consulting conversation before choosing a provider, so the number and the wider phone system are set up correctly the first time.
Conclusion
Getting a virtual phone number in Australia isn't complicated, but getting the setup right routing, verification, and a reliable connection behind it is what separates a number that just rings from a phone system that helps your business run. If you'd rather have it set up properly the first time, with ongoing support included, the CSPRO VoIP Services team can handle the number, the call routing, and the connection behind it, so you can focus on the calls themselves.
