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Business Phone Systems in Brisbane

CRT Network Solutions builds and manages business phone systems for Brisbane companies. We work with 3CX, Microsoft Teams, and hosted VoIP to put together a setup that fits how your team works, where they work, and what they need the phones to do.

Level 1/76 Brunswick St, Fortitude Valley QLD 4006

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  • 24/7 IT Support
  • Server Management
  • Security & Firewall Protection

Reach out to our friendly team for a free, no-obligation quote and audit for IT support services.

Working with leading suppliers...

VOIP Phones 3CX
Business Phone Systems Amazon Lightsail
Business Phone Systems
Business Phone Systems breeze Connect
Business Phone Systems Grand Stream
Business Phone Systems Yealink
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Why Brisbane Businesses Work With Us for Phone Systems

We’ve been setting up and managing business phone systems in Brisbane since 2006. It’s one of the services we get asked about most, usually because a business has outgrown what they’ve got or they’re paying for a system that doesn’t match how their team works anymore.

We’re based in Fortitude Valley. When something needs configuring onsite, we’re close. When it’s a remote fix, our team picks up within 3 minutes.

We don’t sell a single product and call it done. We look at how your business communicates, what devices your team uses, whether you’ve got remote or mobile staff, and what your internet connection can handle. Then we recommend the right system and set it up properly.

  • Based at Level 1/76 Brunswick St, Fortitude Valley
  • Under 3-minute call response with remote and onsite support
  • 3CX certified partner with experience across VoIP, hosted PBX, and Microsoft Teams
  • Supporting Brisbane businesses with phone systems and IT since 2006
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Phone Systems We Set Up and Manage

Brisbane businesses run on different platforms depending on their size, their industry, and how their team works. We support the main ones and can help you pick the right fit.

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1. 3CX

3CX is a software-based PBX that runs over the internet. It’s popular with Brisbane businesses because it’s flexible, cost-effective, and doesn’t charge per user. You can run it hosted in the cloud, on-premise, or as a hybrid. Your team can take calls from desk phones, laptops, or mobile devices through the 3CX app.

Features include call recording, call queuing, voicemail-to-email, CRM integration, video conferencing, and live chat. We’re a certified 3CX partner and handle everything from setup to ongoing management.

Phone Installation for Brisbane Business

2. Microsoft Teams Phone

If your business already runs on Microsoft 365, adding Teams Phone means your calls, meetings, chat, and file sharing all live in one place. It works well for businesses that want to keep things simple and don’t want to manage a separate phone system.

We handle the setup, SIP trunking or direct routing, number porting, and user configuration. Your team can make and receive calls from the Teams app on their desktop, phone, or a dedicated Teams handset.

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3. Hosted VoIP / Cloud PBX

For businesses that want a reliable phone system without on-premise hardware, hosted VoIP is the cleanest option. Everything runs in the cloud. You get enterprise-grade features like auto-attendants, call forwarding, and voicemail, without maintaining a physical PBX on site.

We set up the system, configure your handsets or softphones, and manage it ongoing. Adding or removing users is straightforward, which makes it a good fit for businesses that are growing or have seasonal staff.

What We Handle

Phone System Design and Setup

We assess your current communication setup, internet connection, and business needs, then design a phone system around that. Includes hardware selection, cabling, handset provisioning, and full configuration.

Number Porting and Migration

Switching providers or upgrading from a legacy system doesn’t mean losing your business numbers. We manage the porting process and handle the cutover so there’s minimal disruption.

VoIP and SIP Trunking

We configure SIP trunks to connect your phone system to the internet, replacing traditional phone lines. This is where most businesses see a direct cost saving, especially if they’re still paying for ISDN or old copper lines on the NBN.

Remote and Mobile Setup

Your team might be in the office, at home, or on the road. We configure mobile apps, softphones, and remote extensions so everyone stays connected to the same business phone system regardless of where they are.

Ongoing Support and Management

Phone systems need maintenance like anything else. We monitor call quality, apply updates, troubleshoot issues, and make changes as your team grows. If something goes wrong, we’re on it the same day.

Need A Custom Solution?

No problem! We offer a wide range of business phone systems to ensure your business gets the solution it needs, no matter the industry

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Who This Works For

We set up phone systems for Brisbane businesses across a range of industries. A few examples of how different businesses use them:

  • Professional services (legal, accounting, consulting): Call recording, CRM integration, voicemail-to-email, and auto-forwarding for teams that rely on every conversation.
  • Healthcare and dental: Secure, reliable communication between patients, staff, and practitioners, with systems that sit alongside clinical software.
  • Retail and hospitality: Call queuing and auto-attendants to handle high volumes during peak hours without missing customer calls.
  • Trades and field services: Mobile app access so your team can take business calls from their personal phone without giving out their personal number.
  • Multi-site businesses: One phone system across multiple Brisbane locations with centralised management, internal transfers, and shared directories.
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Where We Support Businesses in Brisbane

We’re based in Fortitude Valley and support businesses across Greater Brisbane:

  • Brisbane CBD and Fortitude Valley
  • South Brisbane, Woolloongabba, Greenslopes
  • Chermside, Stafford, Aspley (Northside)
  • Toowong, Indooroopilly, Kenmore (Western suburbs)
  • Logan, Ipswich corridor, and surrounding areas


We also support businesses on the Sunshine Coast.

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How It Works

We start with a conversation about what you need, then move through assessment, recommendation, setup, and handover. Most installs take a few days.

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We look at your current phone setup, internet connection, number of users, and how your team communicates day to day. If you've got remote staff or multiple locations, that factors in too.

Based on the assessment, we recommend a platform (3CX, Teams Phone, or hosted VoIP), the right hardware, and a plan structure. We explain what it costs and why.

We handle the install, number porting, handset provisioning, user configuration, and testing. If you're migrating from a legacy system, we manage the cutover to keep downtime to a minimum.

Your team gets a walkthrough of the new system, so they're comfortable with it from day one. We cover the basics (making and receiving calls, voicemail, transfers) and the features specific to your setup.

Once you're live, we monitor call quality, manage updates, and handle any changes you need. Adding new users, adjusting call flows, or troubleshooting issues, we're just a phone call away.

Learn More About Business Phone Systems

Frequently Asked Questions

Have a Question?

It depends on how your team works. If you're already using Microsoft 365, Teams Phone keeps everything in one place. If you want more flexibility and lower costs, 3CX is worth looking at. We'll help you figure out which one fits.

Pricing varies depending on the platform, number of users, and hardware. 3CX charges a flat annual fee based on concurrent calls rather than per user, which keeps costs down as you grow. We put together quotes based on your specific setup.

Yes. We handle the number porting process when you switch systems or providers.

Not always. If you have compatible SIP handsets, we can often reuse them. If you need new devices, we supply and configure Yealink and Grandstream handsets. Your team can also use softphones on their laptops or the mobile app on their phones.

We can set up failover routing so calls redirect to mobile numbers or an alternative line if your internet drops. We also make sure your internet connection and network are solid before we install the phone system.

Yes. 3CX and Teams Phone both have mobile and desktop apps. Your remote team can make and receive calls on the business number from wherever they are.

VoIP is the technology that sends voice calls over the internet instead of traditional phone lines. A PBX is the system that manages your calls, extensions, and features. A cloud PBX runs that system in the cloud, so you don't need on-premise hardware. Most modern business phone systems combine all three.

Get a Free Phone System Assessment

Not sure whether your current phone setup is costing you more than it should, or whether there's a better option for how your team works now? We'll take a look, give you an honest rundown, and put together a recommendation.

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