UniFi Talk Not Receiving Inbound Calls with Breeze Connect SIP Trunk – Setup & Troubleshooting Guide (2025)

Are you setting up UniFi Talk for the first time, or struggling with inbound calls when using Breeze Connect as your SIP trunk provider? You’re not alone. Ubiquiti’s UniFi Talk has become very popular among IT techs, resellers, and small businesses in Australia who already love the UniFi ecosystem — Dream Machines, gateways, switches, and access points. Adding phones seems like a natural step.

At CALLPRO, we’re a specialised telco and phone system provider working with the most user-friendly technologies on the market — not tied to any single vendor. That’s why we’ve been helping resellers and businesses integrate UniFi Talk with Breeze Connect SIP trunks quickly and smoothly. The good news? The process is more straightforward than you might think. The bad news? A few small tweaks are often needed to avoid hours of trial and error.

Basic UniFi Talk Setup with Breeze Connect

To get started, you’ll need:

• A UniFi Controller (most commonly a UniFi Dream Machine or Dream Machine Pro).
• UniFi Talk hardware such as the UVP Touch, UVP Pro, or UniFi Talk Station.
• A stable internet connection (NBN or business fibre).
• A Breeze Connect SIP trunk (order your UniFi compatible SIP Trunk here).

UniFi Talk integrates natively with Ubiquiti hardware, but for SIP trunking you’ll need to configure Breeze Connect as the telephony provider. In Australia, this is made easier thanks to Leader Computers, the exclusive distributor of Ubiquiti products, who have worked with Breeze Connect to make the integration seamless.

Common Inbound Call Issues (and How to Fix Them)

We’ve seen a few recurring issues when inbound calls don’t work straight away. If outbound calls are working normally, it’s a good indication that your SIP trunk configuration is correct and the issue is more likely related to network or firewall settings. Outbound calls originate from inside your network, so the firewall typically allows them out without restriction. However, inbound calls arrive as external requests into your network, meaning the firewall will apply stricter checks before allowing them through. If these requests are blocked or not routed correctly, inbound calls may fail even though outbound calls are fine.

Here are the top three checks that usually solve the problem:

1. Check Internet Connectivity and NAT Settings

If your ISP uses Carrier-Grade NAT (CGNAT) or double NAT, SIP traffic may not route correctly. Testing the system on a different connection (e.g. direct NBN) can help confirm this. In some cases, purchasing a Static IP (if not already included with your NBN service) has also resolved the issue without needing to change providers. If inbound calls work on an alternative link, you may need to adjust routing or move to an ISP without CGNAT.

2. Import Phone Numbers in E.164 Format

Breeze Connect requires E.164 format for Direct Inward Dial (DID) numbers.
Example: use 61871193000 instead of 0871193000.
Double-check that all your numbers are entered this way in the UniFi Talk settings.

3. Enable SIP Instance in Breeze Connect Settings

Breeze Connect trunks need SIP Instance enabled for inbound calls.
If you’re an end-user, your Breeze Connect reseller can help you adjust this.
Or — let CALLPRO manage your account for you. We’ll fix this at no charge.

Why Work with CALLPRO?

Setting up UniFi Talk is doable for most IT resellers and tech-savvy businesses — but troubleshooting SIP trunks can burn hours. At CALLPRO, we:

• Work daily with Breeze Connect, UniFi, 3CX, and other leading telephony platforms.
• Partner with Leader Computers and Breeze Connect to deliver tested integrations.
• Provide free initial troubleshooting for inbound call issues when your SIP trunk service is managed by us.

We’ve been pleasantly surprised at how straightforward UniFi Talk is to deploy once these few hurdles are cleared. For businesses already running UniFi infrastructure, it’s a natural extension that keeps everything in one platform.

Next Steps

• View Breeze Connect SIP trunk plans to choose the right option for your business.
• Ready to order? Click here to order a SIP trunk through CALLPRO.
• Still stuck? Contact us today — we’ll get your inbound calls working and help you scale your UniFi Talk system without the headaches.

Final Word

If your UniFi Talk system isn’t receiving inbound calls with Breeze Connect, don’t panic — in most cases it’s just a matter of NAT settings, number format, or SIP instance configuration. With a few quick checks, you’ll save hours of frustration.

CALLPRO is here to help Australian businesses and IT resellers make the most of UniFi Talk and Breeze Connect. If you’d like us to set this up or troubleshoot for you, reach out anytime — we’ll make sure your phones just work.