Move from traditional PBX and future-proof your business with:
SIP Trunking
Take your on-premises phone systems into the cloud at a fraction of the cost.
The best SIP Trunking solutions for your business, with Australia’s best SIP Trunk provider.
As Australia’s most reliable and trusted SIP Trunk provider, we connect you to both public internet and private IP connections, as your business demands.
We offer tailored business SIP Trunk solutions for your enterprise through our fully-owned and controlled network with full support from configuration to installation, guaranteeing you reliability and uptime. It’s what makes us different.
We offer tailored business SIP Trunk solutions for your enterprise through our fully-owned and controlled network with full support from configuration to installation, guaranteeing you reliability and uptime. It’s what makes us different.
What’s SIP Trunking?
C9X uses VOIP to connect you to the internet, rather than traditional phone systems, where bundles of physical wires join your business to a service provider. With SIP Trunking, you can secure your IP phone systems via a business-grade data service. The result? Crystal-clear, seamless calls at just a fraction of the cost and physical burden. We guarantee it.
Global, future-ready connectivity
Connect anywhere, anytime and feel like you’re in the same room. We’ve entered a new world of working flexibility, and we work with you to make the most of your on-premises phone system.
Invested in analogue but want to know more?
We get it—you may have invested too much in your analogue PBX but want to use SIP Trunking. Let us provide full assistance and help you configure and install an analogue-to-IP gateway device to connect your business. It’s all part of the service.
SIP Trunking Features
Use existing
phone numbers
phone numbers
Bring your existing phone, fax, 1800, 1300, 13 numbers with you. Too easy.
Business-grade
connectivity
connectivity
Our expert pre-sales engineers are dedicated and equipped to connect your business to scale for maximum uptime and productivity.
nbn™
ready
ready
Move with the times and put your calls into the cloud, with safety, security and reliability guaranteed.
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Find your perfect
call plan
From basic timed call plans to fully unlimited, there’s a plan to suit your business and your budget.
Owned
network
Unlike other telcos, we own our network, giving us full control over service and reliability and passing the benefits onto you.
Inbound
Services
Services
Speak with us about an on-premises phone system for your business today. We’re here to help.
Choose your SIP Trunking plan
Or Call 1800 000 C9X
Customer Stories
C9 has provided us with great product techology, IT consultation and advice that has lifted our telecommunications and network capabilities beyond our expectations. We continue to experience great service and support knowing that we are valued and important as customers of C9.
Zoran Radevski