The Business Phone System That Just Works. Fully Managed. One Australian Team. Total Accountability.
Upgrade your office, clinic, warehouse, or multi-site business with enterprise-grade voice reliability. C9 manages everything—Yealink hardware supply, zero-downtime number porting, call routing, and direct engineering support. No reseller finger-pointing. Just crystal-clear, reliable communication.
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Build your Phone System
Modern Business Phone Systems Backed By
Local Support And Practical Advice
Staff Capacity
Customize your configuration
System Summary
10 Users
Cloud PBX Configuration
$200/mo
1 Devices & Acc
Yealink Provisioned
$150/mo
Est. Monthly Total
$350
Communication That Flows Through Your Business
Hosted PBX & Business Voice
Our enterprise-grade hosted PBX provides smart call routing, IVR, and seamless multi-site connectivity with zero maintenance and local AU support.
Smart Call Routing
Direct calls to the right team based on time, site, or IVR.
Local AU Redundancy
Geographically redundant servers for 99.99% uptime.
Seamless Porting
We manage the move of your existing numbers with zero downtime.
Live Dashboards
Real-time visibility into call volumes and queue performance.
Choose the Setup That Matches Your Business
One partner responsible for every call.
We treat phones as a managed endpoint. C9 owns the hardware, the network, and the support layer — so you only have one team to call when you need help.
Book your free site audit
Simplify Business Communication Without Sacrificing Capability
We translate complex technical features into reliable business outcomes. Your communication tools should make your team faster, not create operational friction.
Moving From an Old Phone System?
Migration is where most phone system upgrades fail. C9 uses a structured transition framework to ensure your business stays reachable throughout the entire cutover process. No dropped numbers. No unexpected downtime.
Number Porting
We handle the entire AU porting process with zero loss of ownership.
Logic Mapping
We review and rebuild your call flows to improve customer experience.
Site Audit
We check cabling and internet to ensure the new system works flawlessly.
Go-Live Support
C9 engineers are on standby during your first day of operation.
Review My Current Setup
Already have pricing from another provider, or looking to replace a legacy PBX? Send us your current bill and we’ll show where C9 can simplify your system.
Request Setup ReviewSwitch Your Business Phone System Without the Usual Disruption.
C9 helps businesses replace outdated setups with modern managed communication — without vendor runaround or migration stress.
Professional-grade business communication hardware.
Yealink is the industry standard for high-performance voice terminals. As a certified partner, C9 supplies, provisions, and manages every device — ensuring your hardware works in lockstep with your system logic.
Centralised Provisioning
Zero-touch deployment directly to your desks.
Firmware Management
Automatic updates handled entirely by C9.
Native Teams Support
Standardised room and desk terminals.
Acoustic Excellence
Noise-cancelling & HD Voice technology.
Desk Terminals
DECT Cordless
Meeting Rooms
Wireless Headsets
Business Phone System Planning Guide
Download our practical guide to modernising your business communications. Learn how to map out multi-site setups, prepare for migration, and select the right devices for your team.
A Voice Infrastructure Partner That Actually Answers the Phone
Stop tolerating ticket hand-offs, finger-pointing, and offshore helpdesks. C9 is the single point of accountability for your entire business communications—owning the network, the hardware, and the SIP logic.
Under 30-Sec AU Helpdesk
No automated phone trees or script-reading coordinators. Speak directly to level-3 voice engineers based in Australia who can change routing and troubleshoot immediately.
No-Finger-Pointing SLA
We own the carrier voice circuit, the pre-configured Yealink hardware, and your call routing logic. When you call us, we resolve it—no passing the buck to external IT or third-party telcos.
Active Network Guarding
Our platform monitors call quality, packet loss, and connection paths 24/7. We dynamically reroute voice channels around network drops before your receptionist or clients ever notice.
Ready to Build a Phone System That Fits Your Business?
Speak with an AU-managed voice specialist to identify where your current system is failing and how C9 can modernise your setup.
Call us today: 1800 000 299
WHAT HAPPENS AFTER YOU SUBMIT
1. A real Australian calls you
Not a call centre. Not a script. Someone who actually knows IT.
2. We review your current gaps
We show you exactly where your infrastructure is exposed.
3. You get a clear roadmap
Plain English. Exact pricing. No lock-in or pressure.
Request Phone System Plan
Select your preferred engagement path below.
Frequently Asked Questions
Number porting is the primary failure point of telco migrations. C9 uses a dedicated porting desk that pre-stages all voice logic, tests inbound call paths, and routes numbers dynamically on cutover day. We guarantee 100% voice continuity with zero inbound call loss.
Why leaders trust C9 Communications
"Consolidating our nationwide connectivity and IT infrastructure under C9 Communications was the best strategic move we made. Their enterprise Fibre Business nbn® eliminated our downtime, and having a single, proactive Australian support team means zero IT headaches."
David Chen
Operations Director
"C9 executed a flawless migration of our staff to Microsoft 365 while completely hardening our security posture. Their zero-touch device deployment via Intune saved our IT team hundreds of setup hours and standardized our hybrid workforce seamlessly."
Sarah Jenkins
Chief Technology Officer
"The strategic roadmap provided by C9 aligned our technology stack perfectly with our aggressive growth targets. They don't just fix issues; they engineer sophisticated, centralized infrastructure that scales dynamically. Truly unmatched enterprise consultancy."
Michael Ross
Managing Director
"Consolidating our nationwide connectivity and IT infrastructure under C9 Communications was the best strategic move we made. Their enterprise Fibre Business nbn® eliminated our downtime, and having a single, proactive Australian support team means zero IT headaches."
David Chen
Operations Director
"C9 executed a flawless migration of our staff to Microsoft 365 while completely hardening our security posture. Their zero-touch device deployment via Intune saved our IT team hundreds of setup hours and standardized our hybrid workforce seamlessly."
Sarah Jenkins
Chief Technology Officer
"The strategic roadmap provided by C9 aligned our technology stack perfectly with our aggressive growth targets. They don't just fix issues; they engineer sophisticated, centralized infrastructure that scales dynamically. Truly unmatched enterprise consultancy."
Michael Ross
Managing Director
"Consolidating our nationwide connectivity and IT infrastructure under C9 Communications was the best strategic move we made. Their enterprise Fibre Business nbn® eliminated our downtime, and having a single, proactive Australian support team means zero IT headaches."
David Chen
Operations Director
"C9 executed a flawless migration of our staff to Microsoft 365 while completely hardening our security posture. Their zero-touch device deployment via Intune saved our IT team hundreds of setup hours and standardized our hybrid workforce seamlessly."
Sarah Jenkins
Chief Technology Officer
"The strategic roadmap provided by C9 aligned our technology stack perfectly with our aggressive growth targets. They don't just fix issues; they engineer sophisticated, centralized infrastructure that scales dynamically. Truly unmatched enterprise consultancy."
Michael Ross
Managing Director