C9 GROUP · MANAGED BUSINESS COMMUNICATIONS
Get a business phone system your team can actually rely on.
Missed calls, messy transfers and unclear phone support cost more than a monthly bill. C9 GROUP designs, migrates and manages your calling environment so every customer reaches the right person, team or location.
Bring hosted PBX, Yealink phones, softphones, Teams Calling, SIP trunks, number porting and call-flow control together under one managed Australian provider.
- Route callers faster with queues, IVR, overflow and after-hours rules.
- Keep office, mobile and remote users on one business calling model.
- Move from old PBX or poor support with C9 managing planning, porting and go-live.
Hosted PBX · VoIP Phone · Teams Calling · SIP trunks · Call queues · Number porting · Managed support
Businesses That Trust Us
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Active Extensions
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Calls Handled Daily
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Porting Success Rate
0.99%
System Uptime
CONFIGURE YOUR C9 PHONE SYSTEM
Map the phone setup your business actually needs.
Share the way your business handles calls today. C9 will use the answers to shape the right discussion around users, sites, numbers, call flows, Teams Calling, SIP and Yealink hardware.
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C9 captures users, sites and how calls reach the right people.
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We document queues, after-hours rules, mobile users and Teams requirements.
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Hardware, numbers and migration steps are mapped before a quote is finalised.
Useful C9 tip
How to choose the right phone system for your business
A reliable phone system is not just about picking handsets or comparing a monthly plan. For Australian businesses, the right Hosted PBX setup depends on users, sites, call flow, internet readiness, number porting and who will manage the service after launch.
Before C9 GROUP recommends a C9 Phone System pathway, we narrow the decision around these practical questions:
Is your internet and internal network ready for reliable voice traffic?
How many users, extensions, departments and sites need to be connected?
Are you replacing an old PBX, moving provider, or building a fresh setup?
Do staff need Yealink desk phones, softphones, mobile calling or Teams Calling?
What call handling matters most: reception queues, overflow, voicemail, recording or reporting?
Who will own number porting, cutover, support, changes and provider escalation after go-live?
If you are unsure where to start, C9 can review your current phones, bill, numbers, internet, users and call-flow problems, then map the safest managed path forward.
Book a discovery call
BUSINESS CONTINUITY
Review Voice ContinuityPlan voice continuity before callers notice the problem.
Hosted PBX depends on the network behind it. For many Australian businesses, the real question is what happens to reception, sales, bookings and support lines when internet, devices or provider services have an issue.
growth
Growing teams that need calls to reach the right people faster.
C9 maps users, reception flows, ring groups, voicemail, devices and mobile users so the phone system supports the way the team actually works.
Map Your Phone System
migration
Existing businesses that need to move away from old phone systems safely.
C9 reviews the current provider, phone bill, handsets, numbers, routing and internet quality before planning the cutover.
Upload Phone Bill
multi-site
Multi-site teams that need consistent voice, support and reporting.
C9 helps standardise numbers, call queues, Teams users, devices, SIP paths and support ownership across locations.
Get a Phone System ReviewPHONE SYSTEM PLANNING
Plan the C9 Phone System before you migrate.
Map users, numbers, call flows, Yealink devices, Teams Calling and SIP needs into one managed communications plan.
Map Your Phone System
MANAGED PHONE SYSTEM DELIVERY
A modern business phone system, delivered as a managed C9 ecosystem.
C9 GROUP brings Yealink phones, hosted PBX capability, call-flow design, number migration, mobility, Teams and SIP pathways, continuity planning and ongoing support together so business calling works as part of your wider technology 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.
AI VOICE AGENTS · DEMO ROUTINES
Sometimes your team misses a call, a booking, a reminder or a follow-up.
That is where C9 AI voice agents can sit beside your C9 Phone System. Choose a routine, meet the agent, then request a demo so C9 can shape the call flow around your business.
C9 AI Voice Agents
Select a routine and request a demo test
@Ama
Reception Voice Agent
Ama greets callers, asks the right first questions, captures the reason for the call and routes the enquiry to reception, sales, bookings or support.
Reception overflowFirst-call qualificationAfter-hours message capture
C9 GROUP BUSINESS COMMUNICATIONS
Extend your C9 Phone System with the right communication services.
Explore the connected voice and collaboration services available alongside your managed phone system, with each option supported by C9 GROUP.
VOIP PHONE
Business VoIP calling for office, mobile and hybrid teams.
Mobiles and basic lines can work for a while, but they make it harder to manage queues, transfers, voicemail, reporting and customer experience.
Give staff professional calling from desk phones, desktop apps or mobile devices while keeping business numbers, routing and support under control.
C9 GROUP takes the time to understand your users, sites, numbers, call flows, devices, applications and support expectations—then shapes the phone system around the way your business actually answers and serves customers.
Desktop and mobile softphones
Business caller ID and extensions
Call transfer, forwarding and voicemail
CONNECTED COMMUNICATIONS MODEL
A phone system works best when the voice, network and support model are designed together.
C9 joins decisions that often get split between phone providers, carriers, hardware vendors and internal IT. The result is a business communication layer that is easier to operate and easier to support.
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Voice platform
Hosted PBX, VoIP, Teams Calling or SIP trunking selected around the operating requirement.
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Call flow
Auto attendant, queues, reception, after-hours, voicemail and overflow paths mapped clearly.
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People and devices
Desk phones, softphones, mobile apps, Teams users and headsets aligned to roles.
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Support
C9 keeps numbers, providers, devices, routing changes and managed support connected.
COMMUNICATION PLATFORM ECOSYSTEM
Built around calling and collaboration platforms your teams already trust.
C9 GROUP connects voice, Microsoft Teams, handsets, carrier services, network readiness and support into one managed communication conversation.
WHY BUSINESSES CHOOSE C9
Your business phone system, delivered with one accountable team.
One accountable partner
Hosted PBX, VoIP, Teams Calling, SIP, devices, number porting and support stay connected through one C9 GROUP delivery conversation.
Call-flow-aware recommendations
We review how callers reach reception, sales, support, after-hours teams and mobile staff before recommending the setup.
Platform choice with structure
C9 can support hosted PBX, Teams Calling, VoIP and SIP pathways without forcing a one-size-fits-all phone stack.
Practical ongoing management
After go-live, C9 stays involved with user changes, call-flow updates, reports, support and future planning.
INDUSTRY PROOF · CASE STUDIES
Business phone system decisions look different in every industry.
These industry snapshots show how C9 GROUP can shape phone systems around reception, staff mobility, customer experience, reporting and support ownership.
PHONE-SYSTEM READY DELIVERY
Call-flow design · Number porting · Device schedule · Cutover plan
MANAGED VOICE DELIVERY · LOCAL SUPPORT
The phone system is only as good as the planning behind it.
C9 GROUP works with high-grade carrier, voice and technology partners, then takes responsibility for making the solution fit your business. We review users, numbers, call flows, devices, network readiness and cutover timing before implementation.
For hosted PBX, that includes the call logic and physical devices. For Teams Calling and SIP, it includes the platform pathway. For multi-site environments, it includes the rollout rhythm and handover your people can actually use.
Phone system and call-flow assessmentYealink device selection and provisioningCutover and number porting coordinationOngoing managed service ownership
Get a Phone System ReviewDELIVERY PROCESS · MANAGED SERVICE
Get a Phone System ReviewAssess, design, deploy, manage and improve your phone system through one accountable model.
Number porting, call routing, devices, Teams users, SIP paths, internet readiness and support are connected decisions. C9 GROUP manages them as one delivery conversation.
That means fewer hand-offs, clearer ownership and a business phone system that is easier for your team to operate.
ACTIVE STEP
Assess
We review users, numbers, current provider, handsets, call flows, internet quality and support pain points.
PHONE SYSTEM RESOURCES · NEXT STEPS
Make the next phone system decision with more confidence.
Useful starting points for owners, operations leaders, IT managers and customer-facing teams comparing hosted PBX, VoIP, Teams Calling, SIP and UCaaS options.
Questions about C9 Phone System
C9 Phone System is C9 GROUP’s managed business phone system service. It can include hosted PBX, VoIP phones, softphones, Microsoft Teams Calling, SIP trunking, call flows, number porting, devices, internet readiness and ongoing support.