ENTERPRISE VOICE & SLA REDUNDANCY
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.
AU Business Support
Yealink Hardware Partner
Teams Calling Ready
Setup & Migration Included
Businesses That Trust Us
Self-Qualify
Build your Phone System
Modern Business Phone Systems Backed By
Local Support And Practical Advice
Step 1/4
Staff Capacity
Customize your configuration
Min: 5 Staff
10STAFF MEMBERS
Max: 100+ StaffSystem Summary
10 Users
Cloud PBX Configuration
$200/mo
1 Devices & Acc
Yealink Provisioned
$150/mo
Est. Monthly Total
$350
AI CALL ANSWERING
Smarter AI Call Answering. Built Into Your Managed Phone System.
Give every caller a professional response, even when your team is busy, closed, or handling high call volumes. C9's AI Call Answering helps capture enquiries, take messages, qualify intent, and notify the right person - all connected to your managed communications environment.
AI Answering Starter
Best for small teams and after-hours coverage
From $XX/mo
Starter call volumeGuided setup and greeting configuration
AI greeting
Caller details
Message capture
Email or SMS notification
After-hours answering
Popular
AI Answering Business
Best for growing teams and higher call volume
From $XX/mo
Included call minutesCall-flow design and routing setup
Included call minutes
Custom call flows
Priority notifications
Team routing
Call summary
AI Answering Pro
Best for multi-site or advanced workflows
Talk to C9
Usage scoped with C9Managed workflow and integration planning
CRM or calendar integration
Lead qualification
Booking workflow
Escalation rules
Reporting dashboard
Included across AI answering options
Monthly estimates are indicative only. Talk to C9 for final pricing based on call volume, routing, integrations, and onboarding scope.
Available 24/7Personalised greetingCaptures caller detailsSends instant notificationsCan route or escalate callsWorks with C9-managed phone systems
Managed add-on
Add AI call handling to your phone system.
Already using C9 voice, Teams Calling, or hosted PBX? We can help you add AI answering without rebuilding your entire phone environment.
HARDWARE ECOSYSTEMS
Communication That Flows Through Your Business
Ideal for • Enterprise Delivery
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.
Included Features
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.
0+
Active Extensions
0+
Calls Handled Daily
0%
Porting Success Rate
0.99%
System Uptime
Scenarios
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
Operational Capability
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.
BROWNFIELD TRANSITION
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.
1
Number Porting
We handle the entire AU porting process with zero loss of ownership.
2
Logic Mapping
We review and rebuild your call flows to improve customer experience.
3
Site Audit
We check cabling and internet to ensure the new system works flawlessly.
4
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.
Yealink
Certified Hardware PartnerProfessional-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
Free Resource
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.
Migration checklists & timelines
Teams calling vs PBX considerations
Device selection framework
Cost comparison models
C9GROUP
The Modern Phone System Playbook
2026 Edition
SLA & LOCAL ACCOUNTABILITY
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.
PHONE SYSTEM REVIEW
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.
Common Questions
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 C9GROUP
"We used to spend hours chasing different providers whenever a store lost connectivity. Now we call one team, they understand the full environment, and they own the issue through to resolution."
Operations Manager
National Retail Group
OneAccountable Team
"Our clinicians cannot wait for technology problems to be passed between vendors. C9 stabilised the network, improved visibility across our clinics, and gave our team a clear escalation path."
Practice Manager
Multi-site Healthcare Group
12Clinics Supported
"The biggest change is visibility. We can see what is happening across sites, understand recurring issues, and make infrastructure decisions before they become operational problems."
IT Director
National Distribution Business
24/7Active Monitoring
"C9 replaced a collection of disconnected suppliers with one practical technology roadmap. Support is faster, responsibilities are clear, and our leadership team finally has confidence in the plan."
Managing Director
Professional Services Firm
OneTechnology Roadmap
"Reliable warehouse connectivity is business-critical for us. C9 redesigned the network around how our teams actually work, removed the dead zones, and now proactively manages performance."
Operations Director
Logistics & Warehousing Group
ZeroKnown Dead Zones
"The commercial value is not just lower supplier overhead. We now have predictable costs, clearer reporting, and a partner who explains where investment will make the biggest operational difference."
Finance Manager
Growing Australian Business
ClearMonthly Reporting
"We used to spend hours chasing different providers whenever a store lost connectivity. Now we call one team, they understand the full environment, and they own the issue through to resolution."
Operations Manager
National Retail Group
OneAccountable Team
"Our clinicians cannot wait for technology problems to be passed between vendors. C9 stabilised the network, improved visibility across our clinics, and gave our team a clear escalation path."
Practice Manager
Multi-site Healthcare Group
12Clinics Supported
"The biggest change is visibility. We can see what is happening across sites, understand recurring issues, and make infrastructure decisions before they become operational problems."
IT Director
National Distribution Business
24/7Active Monitoring
"C9 replaced a collection of disconnected suppliers with one practical technology roadmap. Support is faster, responsibilities are clear, and our leadership team finally has confidence in the plan."
Managing Director
Professional Services Firm
OneTechnology Roadmap
"Reliable warehouse connectivity is business-critical for us. C9 redesigned the network around how our teams actually work, removed the dead zones, and now proactively manages performance."
Operations Director
Logistics & Warehousing Group
ZeroKnown Dead Zones
"The commercial value is not just lower supplier overhead. We now have predictable costs, clearer reporting, and a partner who explains where investment will make the biggest operational difference."
Finance Manager
Growing Australian Business
ClearMonthly Reporting
"We used to spend hours chasing different providers whenever a store lost connectivity. Now we call one team, they understand the full environment, and they own the issue through to resolution."
Operations Manager
National Retail Group
OneAccountable Team
"Our clinicians cannot wait for technology problems to be passed between vendors. C9 stabilised the network, improved visibility across our clinics, and gave our team a clear escalation path."
Practice Manager
Multi-site Healthcare Group
12Clinics Supported
"The biggest change is visibility. We can see what is happening across sites, understand recurring issues, and make infrastructure decisions before they become operational problems."
IT Director
National Distribution Business
24/7Active Monitoring
"C9 replaced a collection of disconnected suppliers with one practical technology roadmap. Support is faster, responsibilities are clear, and our leadership team finally has confidence in the plan."
Managing Director
Professional Services Firm
OneTechnology Roadmap
"Reliable warehouse connectivity is business-critical for us. C9 redesigned the network around how our teams actually work, removed the dead zones, and now proactively manages performance."
Operations Director
Logistics & Warehousing Group
ZeroKnown Dead Zones
"The commercial value is not just lower supplier overhead. We now have predictable costs, clearer reporting, and a partner who explains where investment will make the biggest operational difference."
Finance Manager
Growing Australian Business
ClearMonthly Reporting