SIP Trunks

Talk is even cheaper.

SIP Trunks are the smartest, most cost-effective way to connect your business to the public switched telephone network (PTSN). Enabled by our network's unmatched reliability and scalability, they unite your voice and data communications seamlessly.

Why are SIP Trunks so popular?

The potential to save.
Your business benefits from the more affordable connection, rental line fee and call charges compared to traditional ISDN services. Only pay for what you use with per second billing on calls*.
Same phones. Better quality.

Users not only keep their landline numbers** and handsets, they will also experience the same (if not better) high-quality phone service as ISDN. 

Enable your growing business.

New hires coming in? Expanding to a new site? With SIP Trunks, it’s much easier and faster to add additional call capacity when and where you need it.


We’ll be there to help 24/7. Our team also offers round-the-clock delivery and maintenance of Vocus SIP trunk services.

Redirect without fail.

If the link to your site fails due to unplanned disruptions or overflow, your calls can be redirected to your chosen recovery site or to a mobile number of your choice.

Solve problems in High-Definition.

Make sure your team’s best ideas are heard loud and clear with HD calls and video-conferencing on HD-enabled equipment. 


Call us (1300 88 99 88) or FILL OUT THE CONTACT FORM to find out how vocus can help your business.

Please see for full terms and conditions. *For applicable tariffs.**Number portability is subject to the customer’s existing carrier. Vocus provides porting from all mainstream Australian carriers.

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Vocus SIP Trunks