Telstra Business SIP

Quick and easy voice calling over the internet

With the nbn™ coming, now is the time to replace your ISDN voice services, and the ideal solution is Business SIP.

Benefit from a quick and simple IP voice alternative. There’s no need for a dedicated private IP network, and you can use any internet provider.

We offer simple migration, enabling you to keep your existing Telstra-approved phone system and phone numbers, all controlled and managed through a convenient online portal. With a wide choice of plans, devices and extras, you have the flexibility and choice to tailor your service to your organisation’s unique needs.

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Key features

Improve management via the user portal

Use our simple online portal to assign users, passwords and phone numbers, check service performance and view reports.

Mobility Feature Pack add-on

Gain a range of benefits with the Telstra Business Connect app, including the ability to use a smartphone or tablet on the go, work at home while appearing to be at your desk, use your computer without the need for a landline phone, and enabling simultaneous ringing across up to 10 devices.

Tailor features to your business needs

Make your solution work for your specific needs. We can tailor your service with a range of features, including analogue phones, EFTPOS, fax, virtual receptionists, alarm lines, hunt groups, business lines and individual number or 100 number blocks.

Business Continuity add-on

Keep your business online, even in times of crisis, with the ability to automatically redirect calls to a nominated number during an outage.


Quick to get started, easy to scale

Get set up in just a few days and scale easily as your business grows.

Cost-effective quality

With Business SIP you ensure effective calling with no need to replace your phone system or have a private IP network.


Be ready for the nbn™ when it arrives, while using your existing access network.

The flexibility to use any network provider

Benefit from Business SIP with a broadband internet service from Telstra or other providers.

Powerful extras

Take advantage of our mobility, security and business continuity options.

Frequently asked questions

Why Telstra

A suite of leading technology, in one place

Transform your people and workplace with a full suite of integrated collaboration, cloud and connectivity solutions from our experts and leading technology vendors.

Extensive, fast and reliable network

Connect to new opportunities around the world with a subsea cable network that reaches more than 400,00km – enough to circle the world almost 10 times. You can access more than 2,000 PoPs and connectivity in more than 200 countries and territories globally, on a network consistently ranked amongst Asia’s most peered IP networks by Dyn’s Internet Intelligence.

Keep up with the latest innovation

Our accredited team and award-winning industry partners invest in innovation to make sure you benefit from the latest thinking.

Getting started

Request a call back

Register your interest here and one of our solutions experts will call you back.

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