What is SIP trunking?

SIP Trunking , put simply, is a means of operating phone systems over the internet, instead of using a traditional phone line. Learn more about how SIP trunking can transform your business communications on our Resource Center .

How many SIP trunks do I need?

One SIP trunk is all your business needs to run all of your communications. Once your trunk is set up, you can scale up or down concurrent call capacity by adding or removing usage channels , or choose pay-per-minute billing for unlimited concurrent inbound call capacity.

How much does SIP trunking cost?

SIP trunking is cheaper than traditional business phone systems. We offer pay-as-you-go pricing with automatic volume discounts as you scale. Find out more with an in-depth breakdown of our pricing , or talk to an expert to get a custom quote.

What are the benefits of SIP trunking?

SIP Trunking has a huge range of benefits over traditional business telephony systems, including scalability , cost savings and configurability . Find out more about what SIP trunking can do for you on our Resource Center .

How can I get started with SIP trunking?

Getting set up couldn't be easier. Just sign up for an account, then follow one of our Bring Your Own Carrier guides to integrate with your PBX or softphone client.

How do I configure SIP trunks?

You can configure, monitor and manage your SIP trunks through the Telnyx Mission Control Portal . For large-scale or automated configuration, you can also leverage the Telnyx API to configure your communications programmatically.

Elastic SIP Trunking

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Migrate your voice connectivity to a next-generation provider in the cloud.

Take Control
Intuitive UIs and APIs to configure, monitor and control every aspect of your communications.
Unlimited Capacity
Scale concurrent call paths to meet your needs or choose to go metered for no limits
Local Presence
Provision local and toll-free numbers in Australia and New Zealand via API.

True Local Numbers

Search for Australian numbers by location or prefix (including 1800 toll-free), with in-plan emergency 000 calling.

24/7 Support

On-call engineers in the US, Ireland, Poland, Brazil, and Australia, so your questions never have to wait until Monday.

Number Porting

Detailed Debugging

Detailed debugging and SIP ladder diagnostics to troubleshoot your calls with full visibility.

Fraud Protection

Dedicated anti-fraud team and predictive AI monitoring to catch toll fraud and number spoofing.

Local Presence

Route SIP signalling and call media through our Sydney AnchorSite^Ⓡ point of presence for ultra-low latency.

Custom Routing

Choose a routing scheme per number for ultimate quality, lowest cost, or specialized traffic types.

Alerting & Reporting

Set custom alerts for account balance, automatic top-up, call statistics, and fraudulent or suspicious activity.

Schedule a Demo

Questions on setup? Check out our quickstart guide

Use our self-service Mission Control Portal

Use our self-service Mission Control Portal or API to customize your configuration:

Authorize connectivity via IP address, FQDN, or user credentials.
Set up multiple IP failovers on your SIP trunks.
Anchor call media to a specific PoP via AnchorSite^Ⓡ.
Choose your SIP transport protocol (UDP, TCP, TLS).
Choose a specific number format.
Specify which audio or video codec to use for your call media streaming.
Use SIP flow ladders to debug faulty connections.

Schedule a demo

Questions on setup? Check out our quickstart guide

Choose Telnyx for crystal-clear calls, every time.

Unmatched Reliability
Minimise call failures with our purpose-built, redundant, global IP network.
Call Quality Guarantee
Get low latency and crystal clear quality with our dedicated network hub in Sydney.
Stress-free Porting
Ports happen automatically, with real-time data validation and close carrier relationships.
Fair and Transparent Pricing
We offer pay-as-you-go pricing with automatic volume and commitment discounts.
Unparalleled 24/7 Support
Australia-based agents and a dedicated team of on-call engineers available around the clock.

See Voice Pricing

Frequently Asked Questions

: SIP Trunking, put simply, is a means of operating phone systems over the internet, instead of using a traditional phone line. Learn more about how SIP trunking can transform your business communications on our Resource Center.
: One SIP trunk is all your business needs to run all of your communications. Once your trunk is set up, you can scale up or down concurrent call capacity by adding or removing usage channels, or choose pay-per-minute billing for unlimited concurrent inbound call capacity.
: SIP trunking is cheaper than traditional business phone systems. We offer pay-as-you-go pricing with automatic volume discounts as you scale. Find out more with an in-depth breakdown of our pricing, or talk to an expert to get a custom quote.
: SIP Trunking has a huge range of benefits over traditional business telephony systems, including scalability, cost savings and configurability. Find out more about what SIP trunking can do for you on our Resource Center.
: Getting set up couldn't be easier. Just sign up for an account, then follow one of our Bring Your Own Carrier guides to integrate with your PBX or softphone client.
: You can configure, monitor and manage your SIP trunks through the Telnyx Mission Control Portal. For large-scale or automated configuration, you can also leverage the Telnyx API to configure your communications programmatically.

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Questions on setup? Read our quickstart guide