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3CX & SIP trunks Melbourne — unified communications

3CX unified communications and SIP trunks for Melbourne business. Video, IM, call quality, and cost savings. Setup, migration, and support.

Last reviewed June 2026
How a call flows

One number, every path covered

3CX greets every caller, sends them to the right team, follows you to any device, and never drops a call after hours. Here's a typical flow we set up — and you can change it yourself in minutes.

Incoming callone business number
Business hours?route by time of day
Auto-attendant“Welcome to Key IT — press 1 for Sales…”
▾  menu routes the call  ▾
SalesRing group — every phone rings at once
SupportCall queue — answered in order, with hold music
AccountsStraight to an extension
No answer → Voicemailtranscribed and emailed straight to you
Answer anywhere:Desk phoneMobile appMicrosoft TeamsWeb browser
After hours → custom greeting → on-call mobile or voicemail
Managed for you

Your phone system, set up and managed by us

We handle the 3CX admin so you don't have to — users and extensions, 2FA, IP-phone provisioning, and Microsoft 365, Google and Teams integration. Your team just makes and takes calls, anywhere.

Sample console — we provision and manage all of it for you.

3CX and SIP trunks in Melbourne

3CX is a complete unified-communications platform — calls, video, chat and advanced call handling — that suits businesses of every size and costs less than traditional systems. Key IT sets up, migrates and supports 3CX and SIP trunks for Melbourne business, so your communications are modern, flexible and fully supported.

What 3CX gives you

Advanced call handling

queues, IVR menus, ring groups and reporting.

Video conferencing and chat

built in, no extra platform required.

Work from anywhere

desk handset, computer or mobile app, with the full system on each.

Lower costs

SIP trunks replace expensive traditional lines.

SIP trunks

SIP trunks deliver your phone lines over the internet, cutting line-rental costs and scaling easily as you grow. They pair naturally with 3CX, and we configure both for clear calls that don't drop.

FAQ

Frequently asked questions

What is 3CX?

A unified-communications platform that handles calls, video, chat and advanced call features for businesses of any size, accessible from desk phones, computers and mobiles.

What are SIP trunks?

Phone lines delivered over the internet rather than traditional copper, reducing cost and scaling easily. They connect your phone system to the public phone network.

Can 3CX work for remote and hybrid teams?

Yes. Staff use the full system from anywhere via the desktop or mobile app.

Will I save money moving to 3CX and SIP?

Usually, yes — lower line costs and no expensive PBX hardware, with more features. We quote so you can compare directly.

Can you migrate us from our old phone system?

Yes. We migrate you to 3CX, porting your numbers and configuring call flows, with minimal disruption.

Is 3CX better than Microsoft Teams Voice?

Each suits different needs. 3CX offers richer call handling; Teams Voice is ideal if you already run Microsoft 365. We help you choose.

Proof, not promises

150+ Melbourne organisations, looked after every day

From manufacturing and healthcare to finance, body corporate and professional services — a few of the businesses whose IT and security we run every day.

Book your free IT & Cyber Security Review

See exactly where your IT and security stand, and what to fix first. No jargon, no obligation.