Voicee delivers crystal-clear voice calls through SIP, a standard technology used in VoIP systems. SIP allows voice calls to be transmitted over the internet instead of traditional copper phone lines. The quality of this streaming media is much better than traditional, analogue phones. 

Because your calls are being transmitted as real-time data packets, the quality of your internet connection directly impacts the clarity, reliability, and experience of your calls. Below, we’ll explain what matters most.

Internet Stability

A stable connection is far more important than a “fast” one. VoIP requires a constant, uninterrupted flow of small data packets. If your connection drops or experiences jitter (uneven delivery of packets), calls may sound choppy, have delays, or disconnect altogether.

• Low latency (<150 ms) is critical for real-time conversation. (If you run a speed test, you're looking for the word "Ping") 

• Consistent connection prevents dropped calls.

• Packet loss should ideally be less than 1%.

Internet Speed (Minimum Download/Upload Speeds)

VoIP doesn’t need as much bandwidth as video streaming, but it does need a dedicated portion of your internet.

• Example: A small venue with 2 concurrent calls should allocate at least 1 Mbps upload and 1 Mbps download, plus overhead for other internet activities.

Using QoS (Quality of Service)

Even with plenty of bandwidth, calls can still suffer if other activities on the network (like large downloads or video streaming) consume resources. This is where QoS comes in. This is particularly noticeable when you are streaming music or media, for example, Spotify. 

Quality of Service (QoS) prioritizes VoIP traffic over other types of traffic, ensuring your calls get the bandwidth they need first.

How to Enable QoS on UniFi Gateways (Smart Queue)

If you’re using a UniFi Gateway (UDM, UDM Pro, USG), UniFi offers a feature called Smart Queues that helps manage traffic fairly and improves VoIP reliability.

Steps to Enable Smart Queues in UniFi:

1. Log in to your UniFi Controller or UniFi Network app.

2. Go to Settings > Internet.

3. Select your WAN interface.

4. Scroll down to Smart Queues.

5. Enable Smart Queues.

6. Enter your maximum upload and download speeds (it’s best to set this ~10% below your ISP’s advertised speeds for accuracy).
   

1. For example: If you have a 100Mbps/20Mbps plan - set these values to 90Mbps (Download) and 19Mbps (Upload)
   

2. If you have a 25Mbps/5Mbps plan - set these values to 22Mbps (Download) and 4 Mbps (Upload)

7. Save the settings.

Smart Queues will now prioritise traffic efficiently, helping ensure your Voicee calls remain clear, even during heavy internet usage.

✅ Tip: If your venue handles many calls simultaneously and has a lot of other devices on your network - consider dedicating a separate VLAN or SSID just for VoIP devices. This ensures maximum reliability. This is a little more technical to setup, so speak to a network engineer or IT professional to help you set this up.