SIP Trunks & SIP Trunking — Cost-Effective Lines for Your PBX
SIP trunks for Australian business: calls over your internet instead of copper lines. Lower line rental, channels that scale, works with 3CX, Cisco and more.
Still paying line rental on ageing ISDN and PSTN lines? SIP trunks are the modern replacement — they carry your calls over the internet to the phone system you already own, so you get crystal-clear HD voice, lower line rental, and channels that scale up or down with your business instead of fixed bundles of lines you never use.
Why businesses switch to SIP trunks
Lower your bills.
Cut line-rental and call costs against traditional lines — our bill reviews have identified savings of up to 65%.
Pay for what you use.
Scale channels to match your real call volume — no fixed bundles of idle lines sitting on the invoice.
Keep your numbers.
Hold onto every existing number and add new ones from anywhere in Australia.
Connected before copper switches off
As Australia retires its copper network, SIP trunking is how businesses keep their phones ringing. We connect your current system now so the switch-off is a non-event — no panic, no scramble. And when you're ready to modernise the platform too, we migrate cleanly to 3CX, hosted PBX or Microsoft Teams calling, with your numbers kept.
Done by real local humans, no robots
SIP Connect is the locally-owned business telco at Greensborough Plaza in Melbourne's north-east. We're vendor-neutral, so we recommend the trunks and platform that suit how you actually work — not a product we're tied to. Our team brings over 80 years of combined industry experience, we're rated 5.0 on Google. When you call, you reach a real person in Greensborough who can have an engineer on it — not an offshore call centre.
Real Connections. Real Easy.
Want to know your number? Send us a recent bill for a free bill analysis, or call 1300 747 266 and we'll map out the switch.
Frequently asked questions
Will SIP trunks work with my existing phone system?
In almost all cases, yes — SIP trunks connect to any modern IP PBX, including 3CX and Cisco. We confirm compatibility up front and handle the whole setup for you, so there's no guesswork at your end.
Do SIP trunks include a static IP?
Yes. Our business services include a static IP, which keeps SIP trunking and remote access stable and secure.
How quickly can you have me up and running?
Fast. We can have a phone system installed in days, not weeks, and SIP trunks slot straight onto your existing PBX — we port your numbers and switch you over cleanly so there's no break in service for your customers.
How much will I actually save?
It depends on your current setup, but our bill reviews have identified savings of up to 65%. Send us a recent bill and we'll show you the real figure — no obligation.
SIP trunks for Melbourne business
A local SIP provider, with numbers ported and trunks sized to your real call volume.
Get a free bill analysis — and stop overpaying
Send us a recent phone or internet bill. We’ll show you exactly where the waste is — our bill reviews have identified savings of up to 65%.