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SIP Trunking

Reliable connectivity for your onsite phone system

SIP trunking is a service that allows companies to connect their onsite IP PBX (Phone system) to the Internet Telephony Service Provider (ITSP) and use its services; inbound phone numbers and outbound call termination. It is effectively a replacement of old PSTN phone lines. A SIP Trunk service can be used via public internet as well as via private IP connections.
View rates & plans

Australia map Australian based service & support
Up & down arrows Inbound and outbound
caller ID support
Handshake Risk free
14 day trial
Headphones Support for SIP protocol
Number porting Number porting. Port your numbers in or out.
Bill Prepaid and postpaid billing models
Gears Assistance with configuration of your PBX
Gears G.711 (alaw or ulaw), G.729, G.722 codecs

SIP trunk rates & plans

SIP Trunk with
Unlimited* calls to
Australian numbers
per channel /
per month   $66 inc GST AUD
  • Including Local, STD, mobiles and 13/1300
  • Bonus offer:
    Free unlimited* calls to 50+ countries >
SIP Trunk with
Low monthly fee
and rated calls
per channel /
per month   $5.50 inc GST AUD
  • Guaranteed high quality caller ID enabled routes

Call plans listed here are designed for general business use. Calls to Australian landlines (Australia wide) and 13/1300 are rated per call, regardless of call duration.

Call Plans

inc GST
Australian landlines Price per call Local and national
Australian mobiles Price per minute Rated per second
13/1300 Per call
Minimum monthly spend to Australian destinations
SIP Basic Business
10 ¢ p/call
13.9 ¢ p/min
25 ¢ p/call
SIP 50 Business
9 ¢ p/call
8.8 ¢ p/min
24 ¢ p/call
SIP 250 Business
8 ¢ p/call
7.7 ¢ p/min
23 ¢ p/call
SIP 500 Business
6.6 ¢ p/call
5.5 ¢ p/min
22 ¢ p/call

High call volumes?

We love competing! Please have a look at our special rates for call centres
or give us a call, tell us about your call volumes and we will provide you with an unbeatable offer

SIP Trunks for call centres Contact us
SIP Trunk Critical Information Summary

International Call Rates – click here; Any unused call credit will expire each month at the end of your billing cycle. Per second billing is subject to a minimum spend of 1c per call and charges are rounded up to the nearest 0.1 cent. Prices are AUD inc GST;

Advanced functionality

SIP trunk service is part of our mPBX system. This enables some unique features to be configured that are not normally available for SIP trunk services.
Integration between onsite and Hosted PBX systems
Automated failover in the event of internet outages
SIP aggregation of traffic from multiple VOIP carriers into one central system.
Compatibility with MS Lync/Skype for Business solutions.
Use your own Skype for Business system and terminate calls via our Skype PSTN gateway

SIP trunk object within mPBX can be configured in two different modes:

Diversion to SIP URI
This mode is useful if you want to send a call to the specified SIP address. SIP URI must be in the following format:
example: or 61399997999@
Create SIP registration
Register your SIP Server with us (e.g. connect your PBX to us).
Enjoy low VoIP rates and complete integration between your onsite and hosted mPBX systems.
Your PBX will be able to call users on our system or dial out to the world and mPBX users will be able to call extensions on your PBX.

Get your FREE account today and try it for yourself

SLA Guaranteed uptime of 99.9% for your mission critical business phone system

Find out why our
customers like us
Current Service Status

Independently monitored
one of the leading independent network
monitoring services with advanced reporting &
notification systems.

We also offer the following services to cover your most demanding requirements

1300/1800 numbers

1300/1800 numbers

Visit 1300/1800 page

A professional image
does not have to be expensive.
Get a number for your business today!



Visit internet page

Guaranteed voice quality via our NBN
and On-Net Fibre connections

International inbound phone numbers

International inbound phone numbers

View more info Download PDF

Connect phone numbers from over 50 countries around the world. Make it easier for your overseas customers to reach you.

Voice Artist

Voice Artist

View more info Download PDF

Impress your clients with
professionally recorded greetings

Number Porting

Number Porting

View more info Download PDF

Number porting supported.
Keep your existing phone number wherever you go.

SIP trunking

Frequently asked questions

  • Do I need internet and how fast?
    VoIP (Voice over IP) requires data connection between your premises and our servers. In most cases it would be public internet. However you only need tiny amount of bandwidth – connection speed in order to use VoIP. Each channel requires 80Kbps (that is 0.08 Mbps), or using compressed codec even smaller – 0.03Mbps. Quality of VoIP will highly depend on reliability of your internet connection. It does not have to be very fast, but it must be reliable and stable. We also recommend using dedicated internet link for setups with over 5 phones.
  • What happens if my internet goes down?
    We have multiple solutions that can make sure you can continue to receive calls even when your internet goes down. You can have calls diverted to your mobile phone if you are offline, this way you can continue to receive calls without any internet. You can also have multiple internet connections for redundancy so if one connection fails you can continue to use the other.
  • What is the quality like?
    Simply speaking – it is better than using traditional phone lines. We use G722 (High Definition Voice Codec). Connection will be crystal clear and better compared to normal PSTN services. Also, unlike many other services, all our equipment is hosted locally, meaning that there will be no delays in voice transmission.
  • Is it reliable?
    Our systems are optimized for reliability, not price. We guarantee 99.9% SLA backed uptime on all our systems. All parts of the system are fully redundant, meaning that there is no single point of failure. This is not just words. We use independent monitoring company called to monitor our server uptime. Hyperspin monitoring results published here
  • Why is there a minimum monthly spend?
    We offer lower rates for larger call volume accounts. For services with minimum monthly spend we deduct the minimum monthly spend ammount on the 1st of each month and this ammount becomes call credit on your account. There are no extra charges for calls up to the minimum monthly spend, calls over are charged at the call plan rates.
  • Do you have references?
    We have client testimonials on our testimonials page.
  • Where are you based?
    Our head office is in Melbourne Australia with our servers located in Equinix ME1 datacentre. All sales and support is handled by our highly trained staff.
  • Can I port my number in or out?
    Almost all Australian telephone numbers can be ported into our system. Any Australian numbers that we provide or are ported into our service can be ported to another provider as long as that provider is willing to take on the number.
Let's talk
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Have special requirements?
Let us tailor a solution to suit your needs

We’d be happy to give you a call and go through your requirements. Once we understand your needs, we will provide you with a detailed quotation. We can also create custom call plans, integrate with third party systems and customise the setup to create a custom solution based on your requirements.

Or sign up to start your
Hosted PBX 14 day free trial today!