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VoIP (Voice over Internet Protocol) is the modern way Australian businesses make and receive phone calls — using the internet instead of old copper lines. Thousands of businesses across Australia are switching to VoIP to cut costs, gain powerful features, and support remote teams. Click2Call makes it simple, reliable, and AI-enhanced.
Key Takeaways
VoIP, or Voice over Internet Protocol, is a technology that converts your voice into digital data packets and transmits them over the internet, rather than through traditional copper telephone lines. When you speak into a VoIP-enabled phone or headset, your voice is digitised, compressed, and sent to the recipient's device, where it is reassembled and played back in near real-time. The entire process happens in milliseconds, making VoIP calls indistinguishable in quality from — and often superior to — traditional phone calls.
For Australian businesses, VoIP typically runs over an NBN connection, a dedicated fibre service, or a business-grade broadband plan. Unlike older technologies such as ISDN (Integrated Services Digital Network) or PSTN (Public Switched Telephone Network), VoIP does not require expensive physical infrastructure at your premises. There are no line cards, no bulky PBX hardware, and no costly maintenance contracts. Your entire phone system lives in the cloud and is managed through a simple web portal.
A modern business VoIP system like Click2Call's Cloud PBX goes far beyond simply making calls. It includes features such as auto-attendants (IVR menus), call recording, voicemail-to-email, call queuing, ring groups, conference calling, and integration with business tools like CRMs. When combined with AI Voice Tools, it can also transcribe calls in real time, summarise conversations, detect sentiment, and route calls intelligently based on the content of what is being said.
The shift to VoIP in Australia has accelerated significantly since the NBN rollout and the retirement of the ISDN network. Telstra officially ceased new ISDN connections in 2018, and the full ISDN network is being progressively decommissioned. For Australian businesses still on legacy phone systems, switching to VoIP is no longer a question of if, but when.
Yes. Click2Call's VoIP services are available to any business in Australia with a reliable internet connection. We serve businesses in every major city and region.
VoIP requires approximately 100kbps per concurrent call. A standard NBN 25 or higher connection is more than sufficient for most businesses. The key factor is not speed but stability and low latency. We recommend a business-grade broadband plan with a quality of service (QoS) configuration to prioritise voice traffic.
VoIP eliminates expensive ISDN line rental and reduces call costs dramatically. Most businesses save 40–70% on their monthly phone bills after switching. National calls are typically included in plans, and international rates are a fraction of traditional carrier costs.
Adding a new staff member to your phone system is as simple as creating a new user in a web portal — no technician visit required. VoIP scales instantly from 1 to 1,000 users, making it ideal for growing businesses.
Features that once required expensive on-premise PBX hardware — such as auto-attendants, call recording, and call queues — are now standard in cloud VoIP systems, available to businesses of any size.
VoIP enables your team to work from anywhere. Staff can use the same business number on their mobile, laptop, or home office phone, maintaining a professional presence regardless of location.
| Feature | PSTN / ISDN | NBN Voice | Click2Call VoIP |
|---|---|---|---|
| Monthly Cost | High | Medium | Low |
| Hardware Required | Yes | Modem only | None |
| Auto-Attendant (IVR) | Add-on | No | Included |
| Call Recording | Add-on | No | Included |
| Mobile App | No | No | Yes |
| AI Features | No | No | Yes |
| Scale Instantly | No | Limited | Yes |
| Future-Proof | No (being retired) | Limited | Yes |
This is the most common concern businesses have before switching, and it is a fair one. The short answer is: yes, modern business-grade VoIP is extremely reliable — often more so than traditional phone lines.
Click2Call's infrastructure is built on redundant, carrier-grade networks with multiple points of presence across Australia. We maintain a 99.9% uptime SLA, which equates to less than 9 hours of potential downtime per year. In practice, most customers experience far less than this. Our platform automatically routes calls through backup paths if a primary route becomes unavailable.
The most common cause of VoIP quality issues is not the VoIP service itself, but the quality of the internet connection at the business premises. We work with our customers to ensure their network is correctly configured, with quality of service (QoS) settings that prioritise voice traffic over other internet activity. With a properly configured business-grade connection, VoIP call quality is consistently excellent.
A complete hosted phone system with auto-attendant, call recording, voicemail-to-email, and more.
Learn more →Real-time transcription, call summaries, sentiment analysis, and smart routing powered by AI.
Learn more →An intelligent virtual receptionist that answers, routes, and handles calls 24/7 without human intervention.
Learn more →Connect your existing on-premise PBX to our network for cost-effective, reliable call termination.
Learn more →Add Australian phone numbers and PSTN calling to Microsoft Teams via Direct Routing.
Learn more →Simple, transparent pricing for all our services. No hidden fees, no lock-in contracts.
See plans →Join thousands of Australian businesses that have already made the switch. Start your 30-day free trial today — no credit card required.