3CX setup, configuration & troubleshooting guides
New to 3CX? Start here.
What is 3CX? A plain-English guide for business owners
3CX explained in plain English: what it is, how it's licensed and hosted, and which businesses it suits.
Read guide →Hosted, self-hosted or on-premise 3CX: which to choose
Should you run 3CX hosted in the cloud, self-hosted, or on-premise? The trade-offs for Australian businesses.
Read guide →Planning a 3CX rollout: the pre-install checklist
A practical pre-install checklist for a smooth 3CX rollout — licences, numbers, internet, phones and staff training.
Read guide →Porting your phone numbers to 3CX without downtime
How number porting to 3CX works, how long it takes, and how to avoid downtime on cut-over day.
Read guide →Set up and manage your system.
A tour of the 3CX Admin Console
A guided tour of the 3CX Admin Console — where to find extensions, trunks, rules, reporting and backups.
Read guide →Adding and managing extensions in 3CX
How to add extensions in 3CX, set roles and permissions, and get new staff up and running quickly.
Read guide →Connecting a SIP trunk to 3CX
How to add and configure a SIP trunk in 3CX so your business can make and receive external calls.
Read guide →Inbound and outbound rules in 3CX
Set up inbound rules (send each DID to the right place) and outbound rules (which trunk and caller ID) in 3CX.
Read guide →Backing up and restoring your 3CX system
How to schedule 3CX backups, what they include, and how to restore your system quickly if something goes wrong.
Read guide →Send every call to the right place.
Building a digital receptionist (IVR) in 3CX
How to record prompts and build a 3CX digital receptionist (auto-attendant) so callers reach the right team.
Read guide →Setting up ring groups in 3CX
How ring groups work in 3CX, the ring strategies available, and when to use a ring group instead of a queue.
Read guide →Call queues and queue strategies in 3CX
Set up 3CX call queues, choose a polling strategy, add agents, and keep callers informed while they wait.
Read guide →Automating calls with the 3CX Call Flow Designer
What the 3CX Call Flow Designer can do and how to build custom call handling for the way your business works.
Read guide →Business hours, holidays and after-hours routing in 3CX
Set office hours, public holidays and after-hours call handling in 3CX so callers always get the right response.
Read guide →Voicemail and voicemail-to-email in 3CX
Set up voicemail greetings and voicemail-to-email in 3CX so messages land in the right inbox, fast.
Read guide →Call recording in 3CX
How to enable call recording in 3CX, where recordings are stored, and what Australian law expects you to tell callers.
Read guide →Web, desktop, mobile and desk phones.
Getting started with the 3CX Web Client
How to log into and use the 3CX Web Client to call, chat, transfer and see colleague status from your browser.
Read guide →Installing and using the 3CX desktop app
Install the 3CX app for Windows or Mac, pair it to your extension, and use your computer and headset to make calls.
Read guide →Setting up the 3CX mobile app
How to install and configure the 3CX app on iPhone or Android so staff can use their work number on mobile.
Read guide →Provisioning desk phones for 3CX
How 3CX provisioning works and how to add Yealink, Fanvil or Snom desk phones to your system the easy way.
Read guide →Using 3CX with Microsoft Teams
How 3CX works alongside Microsoft Teams so staff can make and receive external calls right from the Teams app.
Read guide →Protect your system and stay online.
Securing your 3CX system against toll fraud
Practical steps to secure 3CX — strong credentials, IP rules, an SBC and anti-fraud limits — so you don't get a shock bill.
Read guide →Failover and business continuity for 3CX
Keep calls flowing during an internet or power outage with 3CX failover, backup routing and the mobile app.
Read guide →Fix common call problems fast.
Fixing one-way audio and NAT issues in 3CX
Why one-way audio happens on 3CX and how to fix it — NAT, firewall, SBC and STUN settings explained simply.
Read guide →Troubleshooting call quality on 3CX
Diagnose and fix poor 3CX call quality — jitter, latency, packet loss and the QoS settings that actually help.
Read guide →Plain-English, step-by-step guides to setting up and running a 3CX phone system — written by the Melbourne team that installs and supports them every day. Browse by topic below, or call 1300 747 266 and we'll set it up for you.
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