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Business Phone Systems on the Sunshine Coast

CRT Network Solutions sets up and manages business phone systems for companies across the Sunshine Coast. We're based in Mooloolaba, we've been doing this since 2006, and we work with 3CX, Microsoft Teams, and hosted VoIP.

3/2 Akeringa Pl, Mooloolaba QLD 4557

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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...

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Your Local Phone System Team on the Sunshine Coast

We’ve been supporting Sunshine Coast businesses from our Mooloolaba office since 2006. Our technicians are here, on the ground, installing and managing phone systems for businesses from Caloundra to Noosa and through the hinterland. When you call, you’ll speak to a senior tech within 3 minutes. When something needs an on-site visit, we’re local to you.

We know the internet infrastructure on the Sunshine Coast, including the NBN inconsistencies that affect VoIP quality in different areas. We test and fix those issues before we install anything.

  • Office at 3/2 Akeringa Pl, Mooloolaba QLD 4557
  • Under 3-minute call response with remote and onsite support
  • 3CX certified partner with experience across VoIP, hosted PBX, and Microsoft Teams
  • Supporting Sunshine Coast businesses with IT and phone systems since 2006
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Phone Systems We Work With

Every Sunshine Coast business has a different setup. A surf shop in Maroochydore doesn’t need the same phone system as a medical practice in Buderim or a construction company running crews out of Nambour. We work with the main platforms and help you pick the right one.

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1. 3CX

3CX is a software-based PBX that runs over the internet. Your team can take calls from desk phones, laptops, or mobile devices through the 3CX app. It doesn’t charge per user, which keeps costs manageable as your team grows. You can run it hosted in the cloud, on-premise, or as a hybrid.

We’re a certified 3CX partner. We handle setup, configuration, handset provisioning, and ongoing management.

Phone Installation for Brisbane Business

2. Microsoft Teams Phone

If your business already uses Microsoft 365, Teams Phone means your calls, meetings, chat, and files all live in one place. 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 any device.

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3. Hosted VoIP / Cloud PBX

For businesses that want a reliable phone system without hardware on site, hosted VoIP runs everything in the cloud. You get features like auto-attendants, call forwarding, and voicemail without maintaining a physical PBX. Adding or removing users is simple, which suits businesses with seasonal staff or growing teams.

What We Handle

Phone System Design and Install

We look at your business, your internet connection, and how your team communicates, then design a phone system around that. We handle hardware selection, cabling, handset setup, and full configuration. All installed locally by our Sunshine Coast technicians.

Number Porting and Migration

Moving to a new system doesn’t mean losing your business numbers. We manage the porting process and time the cutover so there’s minimal disruption to your day.

VoIP and SIP Trunking

We configure SIP trunks to connect your phone system to the internet, replacing traditional phone lines. If you’re still paying for old copper lines or ISDN on the NBN, this is usually where the cost saving starts.

Internet and Network Assessment

VoIP call quality depends on your internet connection. Before we install anything, we assess your network to make sure it can handle voice traffic properly. If there are issues, we fix them first. This matters on the Sunshine Coast where NBN speeds and connection types vary between suburbs.

Remote and Mobile Setup

Your team might be in the office, working from home, or out on site. We configure mobile apps, softphones, and remote extensions so everyone stays connected to the same business phone system.

Ongoing Support and Management

We monitor call quality, apply updates, troubleshoot issues, and make changes as your business grows. If something goes wrong, our Sunshine Coast team is on it the same day.

Who This Works For

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

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

Our office is in Mooloolaba. We install and support business phone systems across the Sunshine Coast, including:

  • Maroochydore, Mooloolaba, Alexandra Headland
  • Caloundra, Kawana, Currimundi
  • Buderim, Sippy Downs, Mountain Creek
  • Nambour, Palmwoods, Woombye (Hinterland)
  • Noosa, Tewantin, Coolum, Peregian
  • Beerwah, Landsborough, Glass House Mountains

We also support businesses in Brisbane from our Fortitude Valley office.

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The Best In Business Phone Solutions In Brisbane

How It Works

We start with a conversation about what your business needs, assess your current setup and internet, then recommend, install, and hand over a system that works.

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

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're recommending it for your business.

We handle the full installation at your Sunshine Coast premises. Number porting, handset provisioning, user configuration, and testing. If you're migrating from an older system, we manage the cutover to keep downtime to a minimum.

Your team gets a walkthrough so they're comfortable with the new system from day one. We cover the basics and the features specific to your setup.

Once you're live, we monitor call quality, manage updates, and handle any changes you need. New users, adjusted call flows, and troubleshooting. We're a phone call away.

Learn More About Business Phone Systems

Frequently Asked Questions

Have a Question?

It depends on your team size, how you work, and what you're already using. 3CX is popular with Sunshine Coast businesses because it's flexible and doesn't charge per user. If your team is already on Microsoft 365, Teams Phone is worth looking at. We'll help you figure out the right fit.

It can. VoIP depends on a stable internet connection, and NBN speeds vary across the Sunshine Coast depending on your connection type and location. We assess your internet before installing anything. If there are issues with bandwidth, latency, or jitter, we sort those out first so your calls are clean from day one.

Usually, yes. We've installed VoIP systems for businesses in Nambour, Palmwoods, and other hinterland locations. The key is making sure your connection is properly configured for voice traffic. In some cases, we'll recommend a dedicated internet line for the phone system to keep call quality separate from general usage.

It varies by platform, number of users, and hardware. 3CX charges a flat annual fee based on concurrent calls, which keeps costs predictable. We quote based on your specific setup, so get in touch and we'll put one together.

Yes. We manage the number porting process so you keep your numbers when switching systems or providers.

Yes. Our office is in Mooloolaba and our technicians install and configure phone systems onsite across the Sunshine Coast, from Caloundra through to Noosa and the hinterland.

Yes. 3CX and Teams Phone both have mobile and desktop apps. Staff can make and receive calls on the business number from home, on the road, or wherever they're working.

Yes. Cloud-based systems like 3CX and hosted VoIP make it straightforward to add or remove users as your team size changes. You're not locked into a fixed number of licences.

We set up phone systems that work across multiple sites with centralised management, internal transfers, and shared directories. Your team can operate as one business regardless of which office they're in.

Get a Free Phone System Assessment

If you're running an older phone system, paying too much for what you've got, or setting up a new Sunshine Coast office, we'll take a look and tell you what makes sense.

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