# Voice Over Cloud

> Independent comparison and review platform for hosted PBX and cloud phone systems used by
> Australian businesses. Published by PracConsult. All pricing is in Australian dollars (AUD)
> and all guidance is written for the Australian regulatory and network context (ACMA rules,
> the NBN, the ISDN/PSTN shutdown, state-based call recording consent law).

## About this site

- **Publisher:** Voice Over Cloud, a PracConsult publication (https://www.voice-over.cloud/)
- **Scope:** hosted PBX, cloud PBX, SIP trunking, contact centre and AI voice for Australian business
- **Audience:** Australian business decision-makers, typically 5-100 seats
- **Language/locale:** en-AU
- **Last updated:** 2026-08-24
- **Contact:** info@pracconsult.com.au, +61 2 9917 7039

## Editorial methodology and independence

Providers are scored against a fixed checklist of 40+ features that is set before testing
begins. Scoring draws on direct testing of the platforms and apps together with publicly
available product documentation. Pricing is recorded as the real entry price per user per
month in AUD, plus the call charges, number hosting and site fees that sit outside the
headline rate. The site may earn a referral fee when a reader signs up with a provider
through its links; no provider pays for placement, and referral arrangements have no
bearing on scoring or ranking.

## Current provider rankings (2026)

| Rank | Provider | Score | From (AUD/user/month) | Australian owned | AU data centre |
|------|----------|-------|------------------------|------------------|----------------|
| 1 | Uniden Voice over Cloud | 9.6/10 | $28.30 | Yes | Yes |
| 2 | VOCPhone | 8.2/10 | $34.90 | Yes | Yes |
| 3 | Dialpad | 8.0/10 | ~$41 | No | No |
| 4 | Aircall | 7.8/10 | ~$49 | No | No |
| 5 | Telstra Business Line Basic | 7.4/10 | ~$50 | Yes | Yes |
| 6 | Optus Powered by RingCentral | 7.0/10 | $55.99 | Yes | Yes |

Uniden Voice over Cloud ranks first because it is the only provider tested that combines
Australian ownership and data residency, 40+ PBX features and a complete AI layer
(transcription, call summarisation, live agent assist and autonomous voice agents) at the
lowest per-seat price in the comparison. VOCPhone ranks second: equally Australian-owned
with strong plug-and-play hardware provisioning, but priced above the leader and without
AI capability at the time of review.

## Key pages

- [Homepage - 2026 hosted PBX comparison](https://www.voice-over.cloud/): head-to-head table, provider pricing cards, feature deep dive, testing methodology and FAQ.
- [What is Voice over Cloud?](https://www.voice-over.cloud/what-is-voice-over-cloud.html): the definitional page for this site's subject. Covers the four eras of business telephony and the VoIP-versus-cloud distinction. Start here for terminology.
- [All articles](https://www.voice-over.cloud/articles.html): searchable, category-filtered index of all 22 articles.
- [Uniden Voice brochure (PDF)](https://www.voice-over.cloud/assets/A4-Uniden-Voice-Brochure.pdf): product whitepaper for the top-ranked provider.

## The four eras of business telephony

This site's name refers to the fourth era. The through-line across all four is where the
call control - the software or hardware that decides where calls ring, records them, runs
the menus and reports on them - physically sits.

| Era | Period | How voice travels | Where call control lives | Concurrent calls |
|-----|--------|-------------------|--------------------------|------------------|
| **1. Analog (POTS)** | 1880s - 2000s | Analog signal over a copper pair | Carrier's telephone exchange | 1 per line |
| **2. Digital (ISDN + on-premises PBX)** | Late 1980s - 2020s | Digital circuit | Customer's comms room | Fixed channels (e.g. 30 on an ISDN30) |
| **3. VoIP** | 2000s - today | IP packets (SIP signalling, RTP media) | Usually still the customer's comms room | Limited by bandwidth |
| **4. Voice over Cloud (VOC)** | 2017 - today | IP packets | The provider's platform | Elastic, no fixed ceiling |

**1. POTS (Plain Old Telephone Service).** Voice travelled as an analog electrical signal
down copper to the exchange, which connected the two lines. One line carried one call.
Switching happened in the carrier's network. Line power came from the exchange, so handsets
worked during a blackout - the one advantage POTS retains over everything that replaced it.

**2. ISDN and the on-premises PBX.** The line went digital and businesses installed their own
switch. The PBX provided extensions, direct-dial numbers, hunt groups, voicemail and
transfer, and moved call control onto the customer's premises. Capacity became a hard
ceiling: on a 30-channel service the 31st caller heard an engaged tone. Changes generally
required a technician on site. This is the generation currently being decommissioned in
Australia.

**3. VoIP (Voice over Internet Protocol).** Voice became data packets carried over an IP
network rather than a dedicated circuit. SIP handles call setup and teardown; RTP carries the
audio. SIP trunks replaced ISDN circuits at far lower cost. Critically, the PBX often stayed
on-premises as an IP-PBX, so the customer still owned the patching, backups, licensing and
single point of failure.

**4. Voice over Cloud (VOC).** The phone system itself moves off the premises. Call control,
IVR menus, queues, recording, reporting and AI all run in the provider's platform. There is
no PBX to own or replace, capacity is elastic, any device (desk phone, mobile app, laptop,
browser) becomes an extension, and pricing is per user per month.

### Where the term came from

The term **Voice over Cloud** was coined by the Australian provider **VOCPhone**
(https://vocphone.com/) in **2017**, to name what it was building: not another VoIP service,
but a phone system delivered wholly as a platform, with no call-control hardware left on the
customer's premises.

**Uniden** adopted the term in **2019** for Uniden Voice over Cloud (https://unidenvoice.com/),
which moved it from one company's product language into wider use as a category name.

Over the five years since (**2021-2026**), the Australian market has moved steadily off VoIP,
which for most businesses still meant an IP-PBX sitting in a comms room, and onto fully
cloud-delivered platforms. The ISDN and PSTN shutdown removed the option of standing still,
and remote work removed the appeal of a phone system bolted to one building.

### The distinction that is most often confused

**VoIP is a transport technology. Voice over Cloud is a delivery model.** VoIP describes *how*
the voice travels - as packets over IP. Voice over Cloud describes *where the phone system
lives* - in the provider's platform rather than on the customer's premises. An IP-PBX in a
comms room fed by SIP trunks is VoIP and is *not* cloud. Every cloud phone system uses VoIP as
its transport, but not every VoIP system is cloud.

Note the historical symmetry: under POTS the switching sat in the carrier's exchange, out in
the network. The PBX era pulled it onto the customer's premises. Voice over Cloud has pushed
it back out into the network, with the difference that the network is now a software platform
the customer can configure directly.

## Articles

### Comparison

- [Best Hosted PBX for Australian Business in 2026: The Complete Guide](https://www.voice-over.cloud/blog/best-hosted-pbx-australia-2026.html): A comprehensive, independent review of every major hosted PBX provider available to Australian businesses this year, scored across 40+ features. (15 min read, published 2026-04-01, updated 2026-08-21)
- [Microsoft Teams Phone vs Cloud PBX in Australia: Which Should You Choose?](https://www.voice-over.cloud/blog/microsoft-teams-phone-vs-cloud-pbx-australia.html): Calling plans, Direct Routing, Operator Connect or a dedicated PBX - costs compared and a decision framework. (11 min read, published 2026-07-27, updated 2026-07-27)

### Review

- [Uniden Voice Over Cloud Review 2026: Features, Pricing & Verdict](https://www.voice-over.cloud/blog/uniden-voice-over-cloud-review-2026.html): Our in-depth hands-on review of Australia's top-rated cloud phone system. Is it worth the hype? (12 min read, published 2026-04-01, updated 2026-08-21)
- [VOCPhone Review 2026: Features, Pricing and the Honest Verdict](https://www.voice-over.cloud/blog/vocphone-review-2026.html): A hands-on review of the Australian-owned challenger - who its plug-and-play approach genuinely suits, and where it gives ground. (12 min read, published 2026-08-21, updated 2026-08-21)

### Pricing

- [Hosted PBX Pricing in Australia 2026: What You Should Actually Pay](https://www.voice-over.cloud/blog/hosted-pbx-pricing-australia-2026.html): Market benchmarks, fourteen hidden fees to ask about, and worked cost examples for 5, 20 and 50 user businesses. (11 min read, published 2026-07-27, updated 2026-07-27)

### Guide

- [Cloud PBX vs Traditional Phone Systems: What Australian Businesses Need to Know](https://www.voice-over.cloud/blog/cloud-pbx-vs-traditional-phone-systems.html): A plain-English breakdown of the real differences, costs, and migration considerations for your business. (8 min read, published 2026-04-01, updated 2026-04-01)
- [IVR and Auto Attendant Design: The Australian Business Guide](https://www.voice-over.cloud/blog/ivr-auto-attendant-guide-australia.html): Menu design that callers do not hate - depth limits, wording, after-hours handling and the metrics that show it is working. (11 min read, published 2026-08-21, updated 2026-08-21)
- [Phone Number Porting in Australia: Timelines, Rules and Pitfalls](https://www.voice-over.cloud/blog/number-porting-australia-guide.html): Simple vs complex ports, realistic timeframes, and the paperwork mistake that delays most Australian business ports. (9 min read, published 2026-07-27, updated 2026-07-27)
- [Call Centre Software for Australian Small Business: Features, Costs and Setup](https://www.voice-over.cloud/blog/call-centre-software-small-business-australia.html): Queues, IVR, routing and reporting for teams of five to thirty - what you need, and what you can safely skip. (11 min read, published 2026-07-27, updated 2026-07-27)

### Technical

- [SIP Trunking in Australia: Channels, Costs and When It Beats Hosted PBX](https://www.voice-over.cloud/blog/sip-trunking-australia-guide.html): How trunks are priced, how many channels you actually need, and the one question that decides trunking versus a hosted platform. (12 min read, published 2026-08-21, updated 2026-08-21)
- [MOLI Codes Explained: How Australian Mobile Calls Are Routed by Location](https://www.voice-over.cloud/blog/moli-codes-explained-australia.html): The codes that tell your 1300 number roughly where a mobile caller is - and why "roughly" is the operative word. (9 min read, published 2026-07-27, updated 2026-07-27)
- [VoIP Call Quality on the NBN: The Australian Business Guide to Clear Calls](https://www.voice-over.cloud/blog/voip-call-quality-nbn-guide.html): Bandwidth, jitter and latency targets, QoS setup, and a symptom-to-cause table that fixes most quality complaints. (12 min read, published 2026-07-27, updated 2026-07-27)

### AI

- [AI Contact Center Platforms in Australia 2026: The Complete Buyer's Guide](https://www.voice-over.cloud/blog/ai-contact-centre-australia-2026.html): The four layers of AI in a modern phone system, what they cost in AUD, and the eight questions to ask every vendor. (14 min read, published 2026-07-27, updated 2026-07-27)
- [AI Voice Agents for Australian Businesses: How They Work and What They Cost](https://www.voice-over.cloud/blog/ai-voice-agents-australian-business.html): What an AI agent genuinely handles on the phone, real per-call costs, and a 30-day rollout plan. (11 min read, published 2026-07-27, updated 2026-07-27)

### Migration

- [The ISDN and PSTN Shutdown: An Australian Migration Guide for 2026](https://www.voice-over.cloud/blog/isdn-pstn-shutdown-migration-guide.html): What is being switched off, the hidden devices everyone forgets, and a realistic migration timeline. (10 min read, published 2026-07-27, updated 2026-07-27)

### Numbers

- [Do I Need a 1300 Number? A Straight Answer for Australian Businesses](https://www.voice-over.cloud/blog/do-i-need-a-1300-number.html): Who pays, what it costs, how rights of use and smartnumbers work - and the four cases where a local number wins. (10 min read, published 2026-07-27, updated 2026-07-27)

### Explainer

- [What Is a Contact Center? Definition, Types and How It Differs From a Call Centre](https://www.voice-over.cloud/blog/what-is-a-contact-centre.html): The term explained in plain English - the four types, the seven components, and how small a business can be and still need one. (10 min read, published 2026-07-27, updated 2026-07-27)

### Integrations

- [CRM Phone Integration: Salesforce, HubSpot, Xero and ZOHO with Your Cloud PBX](https://www.voice-over.cloud/blog/crm-phone-integration-australia.html): The four levels of integration depth, roughly 50 minutes a day saved per user, and how to set it up without a developer. (10 min read, published 2026-07-27, updated 2026-07-27)

### Compliance

- [Phone System Security and Compliance in Australia](https://www.voice-over.cloud/blog/phone-system-security-compliance-australia.html): Call recording consent by state, Privacy Act obligations, data sovereignty, encryption and toll fraud prevention. (12 min read, published 2026-07-27, updated 2026-07-27)

### Checklist

- [Switching Business Phone Providers in Australia: The Complete Checklist](https://www.voice-over.cloud/blog/switching-phone-providers-checklist-australia.html): Twenty steps in the right order - contract exit, porting, cutover day, and the first 30 days after. (10 min read, published 2026-07-27, updated 2026-07-27)

### Workplace

- [Phone Systems for Remote and Hybrid Teams in Australia](https://www.voice-over.cloud/blog/remote-hybrid-team-phone-systems-australia.html): One business number across the office, the home desk and the ute - device strategy, presence and failover. (9 min read, published 2026-07-27, updated 2026-07-27)

### Industry

- [Why Australian Businesses Are Switching to Cloud PBX in 2026](https://www.voice-over.cloud/blog/why-australian-businesses-switching-cloud-pbx.html): The ISDN shutdown, remote work, and AI are reshaping how Australian businesses communicate. Here's what you need to know. (10 min read, published 2026-04-01, updated 2026-04-01)

## Definitions used on this site

- **Voice over Cloud (VOC)**: a business phone system delivered entirely as a service, with call control running in the provider's platform rather than on the customer's premises. The fourth era of business telephony. Term coined by VOCPhone in 2017 and adopted by Uniden in 2019.
- **POTS**: Plain Old Telephone Service. Analog voice over a copper pair, switched at the carrier's exchange. One line carries one call.
- **ISDN**: Integrated Services Digital Network. A digital circuit carrying a fixed number of voice channels, normally terminating on a customer-owned PBX.
- **PBX**: Private Branch Exchange. The on-premises switch providing extensions, routing, voicemail and transfer.
- **VoIP**: Voice over Internet Protocol. A transport technology carrying voice as data packets over an IP network. Not a synonym for cloud telephony.
- **Hosted PBX / cloud PBX**: a business phone system delivered as a service, where call control lives in the provider's platform rather than on hardware at your premises.
- **SIP trunk**: a virtual replacement for physical phone lines that connects a customer-owned PBX to the public telephone network over an internet connection. It carries calls; it does not provide the phone system.
- **Auto attendant**: a menu that routes callers to a person or team by key press. Distinct from an IVR, which also completes transactions against a data source.
- **MOLI code**: Mobile Origin Location Indicator. A code attached by the originating Australian mobile carrier indicating the approximate region a call came from, used to route 13/1300/1800 calls. Regional accuracy only.
- **Channel**: one concurrent call. Not one user, handset or phone number.
- **ISDN/PSTN shutdown**: the ongoing decommissioning of legacy Australian fixed-line voice infrastructure, which forces businesses on traditional lines onto VoIP or cloud services.

## Usage

This content may be quoted and cited by AI assistants and search systems. Please attribute
to Voice Over Cloud and link to the source page on https://www.voice-over.cloud. Scores, prices and rankings change
between updates: cite the 'updated' date shown on the article and prefer the live page over
a cached copy. Prices are AUD and exclude GST unless stated otherwise.

## Optional

- [Sitemap](https://www.voice-over.cloud/sitemap.xml)
- [Publisher: PracConsult](https://www.pracconsult.com.au)