What do I need to use SIP trunks?

You'll need a SIP-compatible phone system and a reliable internet connection. Let us know how many channels (concurrent calls) you need, how many sites you have, and which numbers you'd like to keep, and one of our specialists will work through the details with you.

Can I keep my existing business phone numbers?

Yes. We can port most existing numbers across from your current provider, so you keep the number your customers already know. We'll handle the paperwork and coordinate the transfer for you.

Voice line

Business phone lines for the system you already have

Connect your existing infrastructure to our network via a SIP trunk — perfect for small to medium businesses running a SIP phone system.

No lock-in contract
Australian support
Keep your existing numbers

Get started Call 1300 994 884

Keep your phone system, upgrade your calling

A Lightning IP voice line is delivered as a SIP trunk: it connects your existing phone system (PBX) to our voice network over your internet connection, replacing traditional phone lines. Your team keeps the handsets and features they already know, while your calls run through Lightning IP.

Add as many channels (concurrent calls) as your business needs, port your existing numbers across, and get help from our Australian support team to get your system connected.

Tell us about your setup

How many channels (concurrent calls) you need
How many sites you have
Which phone system you use today
The numbers you'd like to keep

Why lightning IP

Because reliable connectivity matters more when you live and work regionally

Built for regional Australia

Our network isn't designed as an afterthought to metro infrastructure. We plan, invest, and optimise specifically for regional towns, business precincts, and essential services accounting for distance, demand, and real-world conditions so your connection performs when it matters most.

4.8 from local customers on Google.

View all Google reviews

How to review a business that smashes your expectations and leaves the best the competition can do in an archaic time? I waited 17 days for Telstra to deliver me a modem for my business and every time I called they had no progress. I decided I had enough, I call Lightning IP and within 30 minutes I had internet setup at my premises. Seriously ridiculous customer service. It's customer service you can get from small, privately owned business. If I could give them 50/5 I would.

Lachlan EsplinBusiness Owner - Albury, NSW

Frequently asked questions

: A SIP trunk connects your existing phone system (PBX) to our voice network over your internet connection, replacing traditional phone lines. You keep the phone system and handsets your team already knows, and make and receive calls through us.
: You'll need a SIP-compatible phone system and a reliable internet connection. Let us know how many channels (concurrent calls) you need, how many sites you have, and which numbers you'd like to keep, and one of our specialists will work through the details with you.
: Yes. We can port most existing numbers across from your current provider, so you keep the number your customers already know. We'll handle the paperwork and coordinate the transfer for you.

Get started

Ready to connect your phone system?

Let us know the basics about your business and one of our specialists will get in touch to discuss the details.