Telephone Systems Powered by NBN Internet for Business Corporate Australian Networks

1300 700 077

Telephone Systems Powered by NBN Internet for Business Corporate Australian Networks

1300 700 077

Telephone Systems Powered by NBN Internet for Business Corporate Australian Networks

1300 700 077

Business SIP Trunks
Upgrade Your Network to
Secure, Scalable, and Cost Effective Business Communications

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Infrastructure Hosted Locally
In Australian Data Centers

All our IP Voice equipment is hosted in Data Centers in Melbourne, Sydney & Brisbane

All equipment is hand-built with resiliency with no points of failure
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End-to-End
Secure SIP or RTP Transmission

All our SIP traffic is encrypted end-to-end using AES encryption to prevent evesdropping.

All SIPS traffic from our SBC's run on 5061/UDP.

All our SRTP traffic is encrypted and Port Negotiation is done during handshake
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Multiple SIP Gateways
For Latency & Resilience

We have multiple points of presence in Data Centers throughout the eastern seaboard of Australia.

Our network has been designed, such that, if one point fails all traffic automatically moves to another node
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Scale When Your Business Grows
Add Additional Channels or Features without Reconfiguration

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HD Voice Quality
Enterprise-Grade Call Quality With Low Latency, High Availability & Reliable Connectivity

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Reliable SIP Trunking Services
for Australian Business and Corporate Networks

Looking for a reliable SIP Trunk provider in Australia? Our business-grade SIP Trunking services deliver crystal-clear voice calls, lower telecommunications costs, and the flexibility modern organizations need to stay connected.

Whether you’re replacing ageing ISDN services, upgrading an existing PBX, or deploying a new VoIP phone system, our Australian SIP Trunk solutions provide secure, scalable, and cost-effective business communications.

Designed for organizations of all sizes, our SIP Trunks support small businesses, enterprise organizations, government departments, healthcare providers, education, retail, hospitality, and multi-site businesses throughout Australia.

Our SIP Trunk Features

Our Australian SIP Trunk service includes:

  • Unlimited scalability
  • Flexible concurrent call channels
  • Geographic Australian phone numbers
  • 1300 and 1800 number support
  • Number porting from existing carriers
  • National, mobile and international calling
  • High-definition (HD) voice
  • Secure SIP authentication
  • Automatic failover routing
  • Disaster recovery options
  • Caller ID management
  • Emergency calling support
  • Call reporting and analytics
  • Local Australian technical support
  • Enterprise-grade network reliability
Business Telephone System SIP Trunk Handset Gateway Technology Corporate IP Voice RTP Network

Advantages of Selecting

Telnetworks SIP Trunks

  • Lower Communication Costs – Reduce monthly line rental charges and benefit from competitive local, national, mobile, and international call rates.       

  • Scale as Your Business Grows – Add or remove call channels as your business requirements change without installing additional physical phone lines.         

  • Business Continuity – Keep your business connected even during unexpected outages. Calls can be automatically redirected to alternative offices, mobile phones, or remote employees.         

  • Crystal Clear Voice Quality – Our enterprise-grade SIP network delivers high-definition voice quality with low latency and reliable call performance.         

  • Support Remote & Hybrid Work – Employees can make and receive business calls from virtually anywhere while presenting a professional business number.          

  • Keep Your Existing Numbers – Port your current business phone numbers with minimal disruption, ensuring business continuity throughout the migration.

SIP Trunking An Overview

SIP (Session Initiation Protocol) Trunking is the modern replacement for traditional business phone lines.

Instead of using physical copper or ISDN circuits, SIP Trunks connect your business phone system to the National Telephone Network over a secure internet connection.

This allows businesses to make and receive calls using existing phone numbers while reducing costs and improving flexibility.

If your organisation uses an IP PBX, hosted PBX, or Unified Communications platform, SIP Trunking provides a seamless connection to Australia’s telephone network.

Compatible with Leading Business Phone Systems

Our SIP Trunks integrate with many of leading business communications platforms, including:

  • 3CX
  • Yeastar
  • FreePBX
  • Asterisk
  • Cisco
  • Mitel
  • Avaya
  • NEC
  • Panasonic
  • Grandstream
  • Microsoft Teams Direct Routing
  • Ribbon SBC
  • AudioCodes
  • Sangoma

Already have an IP PBX?
In most cases, we can connect your existing phone system without requiring new hardware, helping reduce migration costs.

SIP IP Voice Business Telephone Systems Corporate Networks HD Voice Technical Support 24/7/365 Gateway
SIP RTP 03 02 07 08 Geographic Phone Number for Australian Business Networks

Industries We Support

Our SIP Trunking services are trusted by a vast assortment of organizations and industries across Australia, including:

  • Professional Services
  • Healthcare & Medical Clinics
  • Aged Care Providers
  • Retail Chains
  • Hospitality
  • Construction
  • Manufacturing
  • Government
  • Local Councils
  • Education
  • Financial Services
  • Mining & Resources
  • Logistics & Transport
  • Call Centres

Benifits of Selecting Telnetworks

As An Australian SIP Trunk Provider

Our mission is simple — deliver reliable, affordable, and enterprise-grade VoIP services backed by responsive Australian-based Network Engineers

Working with Telnetworks as a local Australian provider means you receive –

  • Australian-based support engineers
  • Local number porting expertise
  • Compliance with Australian telecommunications regulatory requirements
  • Fast deployment
  • Reliable business-grade infrastructure
  • Flexible commercial plans
  • Personalised service from experienced VoIP specialists

We understand the communication requirements of Australian businesses and provide solutions designed for performance, reliability, and long-term growth.

Whether you’re migrating from ISDN, upgrading an existing PBX, or implementing a new cloud communications strategy, we’ll help you every step of the way.

Numbers Speak Volumes

We have the capacity to Serve You

Business Networks
1000 +
Voice Lines On Our Network
7000 +
Daily Voice Network Calls
100000 +
Uptime in The Last 365 Days
1 %

For more detailed information relating to our Network. Please see our Network Status Page.

Multi-Carrier Redundancy

What Sets Us Apart

What sets us apart from every single other SIP Trunk Provider is our Multi-Carrier Redundancy on our SIP Trunks.

Telnetworks inter-connects to every single major Australian Voice Carrier at our Network Points of Presence Across Australia.

When a single Voice Network Carrier is having Network Outages and Issues, we instantaniously move all traffic from that carrier to any other available carrier.

Thereby, maintaining flawless Voice Connectivity to our Business and Corporate customers across Australia.

This is how we have maintained 100% SIP Voice Network Uptime since March 2020.

SIP RTP Network Uptime No Downtime Data Center SIP RTP Network Host Web Gateway
Business SIP Corporate Networks RTP Gateway Telephone Gateway Cloud Telephony

Ready to Modernise Your Business Communications?

1300 700 077 • info@telnetworks.net.au

Speak with our SIP VoIP Network Engineers for a free assessment of your existing phone system.

We’ll recommend the right SIP Trunk solution, explain the migration process, and provide a competitive quote with no obligation.

Get in touch today to discover how our Telnetworks Australian SIP Trunk services can reduce costs, improve reliability, and prepare your business for modern Telecommunications