SIP Trunking
SIP trunks for the phone system you already own
Two simple plans, priced per channel. Pay for calls as you make them, or choose Business and have local, national, mobile and 13/1300 calls included. Month to month, with no setup fee.
From $9.90 per channel
No contract, no lock-in
Billed per second, no flagfall
First port free with any plan
Australian support
Plans
Choose how you pay for calls
One channel carries one call at a time, incoming or outgoing. You can mix both plans on one account.
Pay As You Go
A low monthly fee per channel. You only pay for the calls you make.
- Local and national calls 9.9c, untimed
- Mobile calls 14c a minute, billed per second
- Calls to 13, 1300 and 1345 numbers 27.5c
- Calls to 1800 and emergency numbers free
- Best for light callers and small business
$9.90/channel/month
inc GST ($9.00 ex GST)
17+ channels: $8.91 per channel (10% off)
No contract · Setup free · First port free · Numbers extra
Critical Information Summary
Business
Recommended
One fixed price per channel, with everyday calls included.
- Local, national, mobile and 13/1300 calls included
- Includes 1,500 minutes per channel per month. After that, standard Pay As You Go rates apply
- Calls to 1800 and emergency numbers free
- A predictable bill every month
$55.00/channel/month
inc GST ($50.00 ex GST)
17+ channels: $49.50 per channel (10% off)
No contract · Setup free · First port free · Numbers extra
Critical Information Summary
How many channels?
17 or more channels? 10% off every channel.
A channel is one call at a time, in or out. 4 channels means up to 4 calls at once.
Call rates
Compare the plans
Every price includes GST. Calls are billed per second, with no flagfall and no minimum call charge.
| Per channel | Pay As You Go | Business |
|---|---|---|
| Monthly fee per channel | $9.90 ($9.00 ex GST) | $55.00 ($50.00 ex GST) |
| Local & national calls | 9.9c per call, untimed | Included |
| Calls to Australian mobiles | 14c a minute, billed per second | Included |
| Calls to 13, 1300 and 1345 numbers | 27.5c per call | Included |
| Calls to 1800 numbers | Free | Free |
| Emergency 000 and 106 | Free | Free |
| Included allowance | Not applicable | 1,500 minutes per channel per month, then Pay As You Go rates |
| 17 or more channels | 10% off every channel: $8.91 each | 10% off every channel: $49.50 each |
| Contract and setup | None. Setup free. | None. Setup free. |
Pay As You Go and Business channels can be combined on one account. More than 50 channels? Talk to us about volume pricing.
Numbers
Add the numbers you need
Plans don’t include numbers, so you only pay for the ones you use.
Local numbers
$2.20/month
inc GST ($2.00 ex GST)
02, 03, 07 and 08 numbers. Setup is free and incoming calls are included.
Number ranges
$16.50/month
for 10 numbers, inc GST ($15.00 ex GST)
A block of 10 numbers for direct dial lines. 100-number ranges are $72.60 a month ($66.00 ex GST).
1300 and 1800 numbers
$16.50/month
1300, inc GST ($15.00 ex). 1800 is $22.00 ($20.00 ex).
New number setup $88.00, or move yours across for $60.50. Incoming calls 9.9c a minute to a 1300 and 13.2c a minute to an 1800, billed per second.
Keep your numbers
Freefirst port
Your first port is free when you take a SIP plan.
After that, $27.50 for a single number. Complex ports start from $132.00.
Fair use on Business
Business is for normal business calling. It includes 1,500 minutes per channel per month. After that, standard Pay As You Go rates apply.
Business isn’t for call centres, telemarketing or reselling. Those suit Pay As You Go.
IT providers and resellers
Resell CloudLine SIP trunks to your clients under your own brand, with partner pricing and support from our team.
Partners: talk to us.
Why CloudLine SIP
Better lines for the system you already have

Tier 1 voice network
Calls travel on an Australian Tier 1 carrier network for clear, reliable voice.
Works with your PBX
Connect most SIP-compatible IP phone systems and gateways. We send a setup guide for your model.
HD voice
Wideband audio where your phones support it, so calls sound clearer.
Failover routing
If your site goes offline, we can set your numbers to divert to a mobile or another number. It isn’t automatic, so ask us to set it up.
Secure connection
Registration or IP authentication, with encrypted signalling and audio available.
Backed by an IT team
We’re part of an Australian IT company, so we can check the network and firewall your trunk runs through.
Sizing
How many channels do I need?
A channel carries one call at a time, incoming or outgoing. Count the most calls your business has going at once on a busy day, then add a little headroom.
In a typical office, about one channel for every three staff is plenty. Call centres need one per agent, on Pay As You Go.
Example: 18 staff, and at your busiest 6 people are on the phone. Choose 8 channels so a 7th call still gets through.
| Your business | Calls at once | Pay As You Go | Business |
|---|---|---|---|
| Sole trader or home office | 1 | $9.90 | $55.00 |
| Small office, about 6 staff | 2 | $19.80 | $110.00 |
| Up to about 12 staff | 4 | $39.60 | $220.00 |
| Up to about 25 staff | 8 | $79.20 | $440.00 |
| Busy office | 16 | $158.40 | $880.00 |
| Large office or multiple sites | 24 | $213.84 (10% off) | $1,188.00 (10% off) |
Prices per month, inc GST. More than 50 channels? Talk to us about volume pricing.
For your IT team
Technical details
Everything your installer needs to connect. We send full settings and a guide for your system when your trunk is ready.
| Item | Detail |
|---|---|
| Compatible systems | Most SIP-compatible IP PBXs and VoIP gateways |
| Authentication | Registration (username and password) or IP authentication |
| Codecs | G.711 A-law, G.722, G.729 |
| Encryption | TLS signalling and SRTP audio |
| Caller ID | Show any number on your account |
| Emergency calls | 000 and 112 supported. Your service address is registered in the IPND (Integrated Public Number Database) for emergency services. |
| Numbers | Not included in plans. Local numbers $2.20/month each, 10-number range $16.50, 100-number range $72.60. 1300 and 1800 numbers can point to your trunk. |
| Porting | First port free with a plan. After that from $27.50 per number. How porting works |
Getting connected
Live in four steps
Step 1
Request a plan
Choose your channels and tell us your phone system. We confirm and send a written quote.
Step 2
Get your settings
We send your trunk details and a setup guide for your system.
Step 3
Move your numbers
We port your existing numbers across, or give you new ones to start with.
Step 4
Test and go live
We make test calls with you or your installer before your numbers switch over.
What is a SIP trunk?
A SIP trunk connects your phone system to the phone network over the internet, replacing traditional phone lines. Each channel on the trunk carries one call at a time, and you can add channels without new cabling.
What is a channel?
A channel is one phone call happening at a time, incoming or outgoing. With 4 channels, your business can have up to 4 calls going at once, in any mix. If all 4 are busy, the next caller gets a busy signal or goes to voicemail, depending on how your phone system is set up.
Channels aren’t the same as phones, staff or phone numbers. A team of 10 that’s rarely on more than 4 calls at once only needs 4 channels, and all your numbers can share them.
How many channels do I need?
Think about the busiest time of your day and count the most calls your business is on at once, then add one or two spare so customers don’t hit a busy signal. Not sure? Send us a recent phone bill or tell us how many staff take calls, and we’ll recommend a number. You can add or remove channels from your next bill.
Will it work with my phone system?
Most IP phone systems and VoIP gateways that support SIP will work. Tell us the make and model when you request a plan and we will confirm it and send a setup guide.
Can I keep my existing numbers?
Yes. We port your numbers across from your current provider. See number porting.
What happens if my internet goes down?
We can set your numbers to divert to a mobile or another number until your site is back online. It isn’t automatic, so ask us to set it up, ideally when your service is connected.
Can I change plans later?
Yes. Switch between Pay As You Go and Business, or add and remove channels, from your next bill. You can mix both plans on one account.
Is there a contract?
No. All plans are month to month, with no lock-in contract and no setup fee.
What does Business include?
Calls to local, national and Australian mobile numbers, plus 13, 1300 and 1345 numbers. Each Business channel includes 1,500 minutes a month. After that, standard Pay As You Go rates apply. Business is for normal business calling, not call centres, telemarketing or reselling.
Do I get a discount for more channels?
Yes. With 17 or more channels, every channel is 10% off: $8.91 each on Pay As You Go or $49.50 each on Business, inc GST.
Related
Not sure which plan fits?
Tell us your phone system and how busy your lines get. We will recommend a plan and send a written quote.
- No lock-in contracts
- Keep your existing numbers
- Local support in Brisbane