This article outlines recommended Wi-Fi 6 configuration practices to support stable Aircall performance. These settings help reduce interference, improve roaming, and ensure that real-time voice traffic is prioritized across your wireless network.

Optimizing RF deployment in environments with thick walls

Structural materials can significantly weaken Wi-Fi signals, so a higher density of access points is required to maintain reliable coverage.

RecommendationWhat to configureWhy it matters
  • Increase AP density and reduce transmit power
Deploy more access points and lower their transmit powerPrevents interference and jitter by creating smaller, more controlled coverage cells
  • Set minimum basic rates on 5 GHz
Configure minimum data rate to 12 Mbps or 24 Mbps Forces weak clients to roam or disconnect, preventing them from slowing down the entire channel
  • Prioritise the 5 GHz band
Steer Aircall traffic toward 5 GHz whenever possibleReduces interference and improves call quality, even though 5 GHz has lower wall penetration

Configuring QoS and prioritising Aircall WebRTC traffic

Quality of Service ensures that sensitive real-time voice traffic is not delayed by standard data transmission.

Enable WMM: Enable WMM (Wi-Fi Multimedia) so that QoS policies can be applied at Layer 2 over the wireless network.

Apply DSCP marking: create a traffic shaping rule that marks Aircall WebRTC and VoIP traffic with DSCP 46 (Expedited Forwarding EF). Target the following:

  • Aircall IP ranges
  • UDP ports 10000 to 60000
  • TCP ports 443, 3478, 5349

Map DSCP values to the correct Wi-Fi access category: confirm that DSCP 46 is mapped to AC_VO (Access Category Voice) on the access point.

Disable intrusion inspection for Aircall traffic: if the AP or controller performs Deep Packet Inspection or Stateful Packet Inspection, exempt Aircall traffic from inspection to avoid packet loss and latency.

Important: Inspection features such as DPI or SPI can introduce delay or packet drops that degrade call quality. Excluding Aircall traffic from these processes is essential.

Wi-Fi 6 specific optimisations

Wi-Fi 6 introduces features that reduce channel contention and improve the performance of real-time RTP streams.

1. Enable OFDMA

Ensure OFDMA (Orthogonal Frequency Division Multiple Access) is active. This allows the AP to divide the channel into smaller units so that it can serve multiple clients simultaneously on both uplink and downlink.

Tip: Using OFDMA helps reduce latency in environments where many Aircall devices are transmitting at the same time.

2. Enable BSS Coloring

Turn on BSS Coloring to reduce interference from nearby access points. This decreases wait times caused by co-channel interference, which is especially useful in high-density deployments.

3. Enable Target Wake Time

Activate Target Wake Time (TWT) for compatible clients. TWT reduces power consumption and device idle time, which can indirectly improve Aircall performance by freeing radio and CPU resources on the user’s workstation.

Note: Not all client devices support TWT, but enabling it can benefit compatible endpoints without negatively affecting others.