How to Reduce Bluetooth Interference in Your Office

Are your Bluetooth headsets dropping calls, cutting out mid-conversation, or making voices sound robotic? You're not alone. In busy offices, Bluetooth interference is a major issue, especially as more employees rely on wireless headsets for calls and meetings.

The good news? There are proven ways to reduce Bluetooth congestion and ensure clear, uninterrupted communication-even in high-density office environments. In this guide, we'll cover how to fix Bluetooth interference, optimise your wireless setup, and explore the best headsets to avoid connectivity issues.

Why Do Bluetooth Headsets Cause Interference in Offices?

With flexible and hybrid work becoming the norm, Bluetooth headsets have quickly become essential for office communication. They offer wireless freedom, letting employees move around without being tied to their desks.

However, as more workers rely on Bluetooth devices, offices are running into a new challenge: Bluetooth interference.

Bluetooth headsets can cause interference in offices when too many Bluetooth devices operate in the same area, competing for a limited number of channels in the 2.4 GHz frequency range-the same range used by Wi-Fi, keyboards, and other wireless devices-including microwaves! To be more specific, Bluetooth operates between 2,402 MHz and 2,480 MHz, a band divided into 79 channels, each 1 MHz wide. Think of it like a busy highway with 79 lanes, where not just headsets but also Wi-Fi networks and other Bluetooth devices are all trying to squeeze in. The more crowded the highway gets, the higher the chances of traffic jams - or in this case, interference.This is known as Bluetooth density, and refers to how many Bluetooth devices can be active at the same time in a shared space without causing connection problems or messing up audio quality. The more devices you have running, the more likely you'll experience interference and performance issues. This can be a real problem in high-density spaces, like call centres or large offices, where dozens of Bluetooth headsets are active at once.

What Causes Bluetooth Interference in Busy Offices?

Bluetooth interference is a common challenge in busy office environments, but understanding the causes can help you address and minimise it effectively. Here's a breakdown of the most common culprits:

1. Wi-Fi Congestion

Both Bluetooth and Wi-Fi operate on the 2.4 GHz frequency band, which can become overcrowded in offices with multiple Wi-Fi networks or a high number of connected devices. When Wi-Fi traffic ramps up, it can interfere with Bluetooth signals, leading to:

• Choppy audio quality
• Dropped calls
• Unreliable connections

2. Physical Barriers

Walls, glass partitions, and metal surfaces can block or reflect Bluetooth signals, making it harder for devices to maintain stable connections. This is especially problematic in offices with:

• Thick walls
• Glass meeting rooms
• Metal furniture or dividers

3. Competing Bluetooth Devices

In high-density spaces, where many Bluetooth headsets and devices are used simultaneously, signal overlap can occur. While Bluetooth's adaptive frequency hopping can help, too many devices in close proximity can still overwhelm the system, resulting in:

• Interference
• Disrupted connections
• Poor audio performance

4. Microwave Ovens

Surprisingly, even microwave ovens can interfere with Bluetooth connections. Microwaves also use the 2.4 GHz band, and if your workspace is near the office kitchen, this can occasionally disrupt signals.

5. Low Battery Levels

A low battery on your Bluetooth headset can impact its ability to maintain a strong and stable signal. This can result in:

• Dropped calls
• Poor audio quality Keeping your headset fully charged is an easy way to avoid this issue.

By identifying these potential sources of interference, you can take proactive steps to improve your office's wireless performance and ensure smoother communication.

Below we'll explore some specific features of Bluetooth headsets and how they can help improve Bluetooth interference.

Bluetooth Headset Features for Reducing Interference

How Adaptive Frequency Hopping Reduces Bluetooth Interference

Bluetooth headsets are designed to automatically avoid interference by switching to clearer frequencies-a feature known as Adaptive Frequency Hopping (AFH). This works well in offices with minimal wireless congestion, but in busy environments with multiple Wi-Fi networks and Bluetooth devices, headsets have fewer open frequencies to switch to, increasing the risk of interference.

Some headsets go beyond standard AFH technology. For example, the Yealink BH70 and BH74 use proprietary anti-interference algorithms that allow twice as many headsets to operate in the same space with minimal disruptions. This makes them ideal for offices where Bluetooth density is a challenge.

How Bluetooth Range and Power Settings Affect Interference

Bluetooth headsets work best within 10 meters, which is perfect for smaller offices or personal workspaces. When used with a USB Bluetooth adapter (dongle) for a PC or desk phone, the range can extend up to 30 meters.

Bluetooth devices are classified by power levels:

• Class 1 (Higher Power) - Up to 100m range, but requires a Class 1 device to reach full range.
• Class 2 (Most Common) - 10m range, balances power and performance.
• Class 3 (Low Power) - Up to 1m range, priotitising battery life and reducing interference.Some Class 1 headsets use adaptive power control, meaning they automatically switch between Class 1 and Class 2 depending on the connected device. This helps reduce unnecessary interference and conserve battery life.

How Multiple Connections Affect Bluetooth Interference

Multipoint Bluetooth headsets let you connect to two devices at once, like a phone and a laptop, making it easy to switch between calls and audio without reconnecting.

However, in high-density offices, having many users connected to multiple devices at the same time increases congestion, making Bluetooth interference more likely. To reduce disruptions:✅ Limit active device connections to one essential device.✅ Use DECT headsets instead of Bluetooth for dedicated desk-based calls.

How Wideband Audio Impacts Bluetooth Interference

Wideband audio delivers clearer, more natural sound by using a wider frequency range than standard audio. The downside? It consumes more bandwidth, which increases interference risk and drains battery faster.

To reduce congestion in busy offices, many Bluetooth headsets allow you to switch between wideband and standard audio. If you experience interference or connection issues, switching to standard audio mode may help.

How Bluetooth USB Dongles Improve Connection Stability

Many computers have built-in Bluetooth, but these often lack the features needed for high-quality calls. This can cause audio lag, connection drops, or poor mic quality.

A USB Bluetooth dongle provides:✔️ Stronger, more stable connections than built-in Bluetooth.✔️ Better call quality with optimided signal handling.✔️ Less interference by reducing dependency on the computer's wireless chip.

For the best Bluetooth headset experience on a PC, using a dongle is highly recommended.

How Many Bluetooth Headsets Can Work in an Office Without Interference?

How well Bluetooth headsets work in an office depends on things like the size and layout of the space, as well as furniture, carpets, curtains, and even walls or metal objects that can affect the signal.

Most of the time, you can have plenty of people using Bluetooth headsets because not everyone will be on a call at once. But if too many headsets are active at the same time, the sound quality can take a hit. To keep things running smoothly, it's a good idea to plan for the busiest times when most headsets might be in use.

As a guideline:

In most cases, you should be fine with up to 50 Bluetooth headsets in an office. This works because not everyone will be on a call at the same time, minimising interference. However, if you're concerned about Bluetooth interference or sound quality during peak usage, feel free to speak with us. We can help you evaluate your setup.

However, in environments crowded with Wi-Fi networks, Bluetooth devices, and other electronics competing on the 2.4 GHz band, interference can become a challenge. This is where DECT headsets come in. Operating on a different frequency, DECT headsets can ease congestion and ensure clearer, more reliable communication, making them an excellent complement to Bluetooth setups.

What Is DECT Technology and How Does It Compare to Bluetooth?

DECT, short for Digital Enhanced Cordless Telecommunications, is a wireless technology built specifically for voice calls. It runs on its own dedicated frequency - 1,880 to 1,900 MHz in Europe and 1,920 to 1,930 MHz in North America (known as DECT 6.0). The beauty of DECT is that it lets multiple devices, like cordless phones or wireless headsets, work side by side without any interference, making it perfect for busy workplaces.

While Bluetooth headsets operate on the 2.4GHz band, DECT headsets operate on their own dedicated frequency band - 1.9 GHz. This means they avoid the interference issues that can bog down Bluetooth devices. If you're working in a larger office where clear, strong audio quality is essential, DECT is often the better choice. With a range of up to 100 metres (and sometimes more), DECT lets you move freely across bigger spaces while staying connected without any worry about dropped calls or weak signals.

DECT is also built for high-density environments, allowing more users to be online at once without affecting performance. That's why it's a popular pick for places like call centres or big open-plan offices where seamless communication is a must. Below is a simple table showing the differences between Bluetooth and DECT technologies.

DECT Headset Features That Help Reduce Wireless Interference

How DECT Channels Prevent Signal Congestion and Improve Call Quality

DECT splits radio frequencies into smaller channels, similar to lanes on a highway (like with the Bluetooth example). Before a device, like a headset, hops into a lane, it checks to make sure it's clear. This keeps everything running smoothly, allowing devices to "take turns" using the lanes without causing any traffic jams or signal interference.

A DECT system typically has two parts: the headset and the base station. These connect by securely exchanging codes, like a virtual handshake. Once they're paired, they communicate privately, and no other DECT devices can interfere because they don't have the matching code.

DECT is perfect for office environments because it supports a lot of wireless devices, ensures clear, uninterrupted communication, and prevents interference, even when many headsets are in use at the same time.

How DECT Headsets Automatically Avoid Interference for Clearer Calls

DECT headsets are built to automatically dodge interference and keep your audio crystal clear. When you start a call, the headset selects the best available channel. If interference pops up during the call, the headset can switch to a different channel on its own to avoid any issues.

Interference usually happens when two headsets nearby are using the same channel. This can occur if someone moves too close to another user on the same channel or if you're in a busy office where all the channels are in use. You might hear this as popping sounds, clicks, or even brief silences of audio.

To help avoid this, DECT headsets and their base stations constantly monitor which channels are free and which are experiencing interference. If they sense a problem, they quickly switch to a better channel. This system, known as adaptive frequency hopping, makes sure your audio stays clear by constantly adjusting to changes in the environment.

Understanding DECT Roaming Range

When picking a wireless headset, the ability to move around while staying connected is super important. The distance you can roam, known as the roaming range, depends on the strength of the radio signal and anything that might block it.

In wide open outdoor spaces, DECT wireless headsets can typically reach up to Up to 106.7 meters. That's the maximum range manufacturers often quote because it's easy to measure when there are no obstacles in the way. But let's be real - most of us aren't using our headsets in wide open fields!

In an office, things like walls, furniture, and even people can block or weaken the signal, cutting down the range. So, while the advertised range sounds great, the real-world roaming range indoors is usually shorter. The more barriers in the way, the less distance you'll be able to move while staying connected.

How DECT Headsets Handle Wireless Density in Large Offices

Like Bluetooth density, wireless density in DECT headsets refers to how many users can actively use their headsets within the same space. This depends on two main factors: the number of simultaneous users and the size of the area they're in. Active users could be anyone on a call, listening to music, or using their headset for work-related tasks. While DECT technology supports more users than Bluetooth, there are still limits to how much the system can handle.

Understanding DECT Frequency Capacity: How Many Headsets Can Your Office Handle?

Each DECT headset takes up a portion of the available frequency, and as long as the number of users stays within the system's channel capacity, everything runs smoothly. However, if the demand exceeds the available channels, roaming range shrinks, and performance can degrade. Room size and user proximity also play a role - users spaced farther apart experience fewer issues, while those closer together may see reduced roaming range in high-density situations.

Channel Sharing in DECT Headsets: How It Affects Call Quality in Busy Workspaces

When there are more users than available channels, the system resorts to channel sharing. This can work effectively in larger areas where users are spread out, but in compact spaces, sharing channels may lead to brief silences or dropped connections. If a user moves far from their base station in a crowded environment, their headset might struggle to find a clear channel, potentially muting calls or reducing audio quality.

Wideband Audio vs. Standard Audio: How It Impacts DECT Headset Performance

Wideband audio, while offering better sound clarity, consumes more bandwidth, limiting the number of users who can operate simultaneously. Many DECT headsets allow users to switch to standard audio to conserve bandwidth and battery life, with wideband audio often halving the maximum number of active users in a given area.

Adaptive Power in DECT Headsets: Reducing Interference and Maximising Capacity

Some headsets, such as the Plantronics Savi series, include adaptive power features that lower transmission power when close to the base station. This reduces strain on the system and allows more headsets to function in the same environment. Additionally, mixing DECT systems operating on different frequency bands, like 1.9 GHz and 900 MHz, can further increase capacity by tapping into separate ranges.

How Many DECT Headsets Can Be Used in a High-Density Office?

The number of DECT headsets your office can handle smoothly depends on things like the size of the space, the furniture and materials in the building, how many people are using them, whether wideband audio is on, and how far the headsets are from their base stations.

As a general rule,you should be fine with up to 100 headsets in the same office. If you're planning to use more than 100 headsets, we recommend a site survey to make sure everything runs without a hitch, as performance can vary based on your setup.

How to Reduce Wireless Interference in High-Density Offices

In high-density office environments, managing wireless density is essential to ensuring smooth and uninterrupted communication. To help optimise wireless headset performance and reduce interference, here are some practical strategies to consider.

Use Adaptive Frequency Hopping (AFH) To Reduce Wireless Interference

Bluetooth's Adaptive Frequency Hopping (AFH) is a powerful feature for avoiding interference. It enables devices to automatically switch between channels in the 2.4 GHz range, finding clearer ones to maintain smooth communication. Yealink Bluetooth headsets take full advantage of this technology, offering enhanced performance even in busy environments with lots of competing wireless signals. Ensuring your Bluetooth devices have AFH enabled can significantly reduce signal disruptions and keep your connections stable.

Mix Bluetooth and DECT Headsets for Better Wireless Performance

Relying solely on Bluetooth headsets in a busy office can overwhelm the available spectrum. A smarter approach is to mix Bluetooth and DECT devices. Since DECT operates on a different 1.9 GHz band, it avoids the congestion on the 2.4 GHz band, giving you more room to work with. This way, both mobile and stationary employees can enjoy high-quality audio without interference.

In fact, you can even combine Bluetooth and DECT within the same headset. For example, the Yealink WH64 offers hybrid connectivity, letting you switch seamlessly between DECT for stationary work and Bluetooth for mobile use. This makes it an excellent choice for offices needing both flexibility and reliability.

Additionally, consider using both 1.9 GHz and 900 MHz DECT headsets. The 1.9 GHz band provides 30 channels, while the 900 MHz band adds 54 channels, giving you up to 84 channels when combined. These systems operate on different frequencies, allowing them to work together without interference, significantly boosting density and range.

Limit Dual Connectivity To Reduce Wireless Congestion

Many Bluetooth headsets let users stay connected to two devices (like a phone and a laptop) at the same time. While this is handy, it can strain the Bluetooth channels in high-density environments. Limiting dual connectivity to only the essential devices can lighten the load on the spectrum, improving overall performance.

Switch to 5 GHz Wi-Fi to Improve Bluetooth Performance in Offices

Bluetooth and Wi-Fi both operate on the 2.4 GHz frequency band, which can lead to interference and reduced audio quality in busy environments. While Bluetooth's adaptive frequency hopping can help mitigate this issue, the presence of multiple Wi-Fi access points further limits available channels and increases the chances of disruptions.

One effective solution is to transition your Wi-Fi network to the 5 GHz band (802.11a standard). The 5 GHz band is less crowded, offers more channels, and reduces competition for bandwidth, allowing Bluetooth devices to operate more smoothly and reliably.

Understand Usage Patterns to Improve Your Office Wireless Setup

Think about how your team uses their headsets day to day. Are they mostly on calls, joining virtual meetings, or streaming webinars and training sessions? Each activity uses up wireless capacity differently, so understanding these patterns helps you plan better and avoid unnecessary disruptions.

It's also worth paying attention to the busiest times of the day when everyone's online. Knowing these peak usage periods can help you ensure there's enough wireless capacity to keep things running smoothly, even when demand is high.

And don't forget about the future. As your team grows, so will your need for more headsets. Leaving a little extra capacity in your plan now means you won't have to scramble later when more people join. A bit of foresight goes a long way in keeping your network reliable and frustration-free.

Best Office Layouts for Reducing Bluetooth Interference

Creating a wireless-friendly office environment is about more than just choosing the right technology. The layout of your workspace, the materials used in your building, and even the furniture you select can have a significant impact on how well your wireless headsets perform. By strategically designing your office, you can minimise interference, maximise wireless density, and ensure seamless communication for your team. Below, we explore key considerations to help you optimise your office for reliable wireless performance.

Segment Work Areas to Reduce Wireless Congestion

To reduce wireless congestion and optimise performance, start by selecting the right headset technology for your team's needs and strategically segmenting work areas. If your office has high user density, or if sound quality and range are key, DECT wireless headsets are a great option. For employees who primarily use mobile phones Bluetooth headsets with multi-device connectivity are more suitable.

To maximise efficiency, consider designating specific zones for different technologies. For instance, assign areas for DECT headsets or wired devices and separate zones for Bluetooth use. This spreads out the demand on wireless networks and minimises interference, especially in environments where the 2.4 GHz band is heavily used.

How Building Materials Impact Bluetooth Congestion in Offices

The materials in your building can affect how well wireless signals travel. For instance, concrete, metal, and walls can block wireless signals, which helps separate wireless networks on different floors. But wooden floors let signals pass through, which can limit the number of headsets that work well in your space. Be sure to take these materials into account when planning how many headsets your building can support. The way your office is set up - what some call the "clutter factor" - can greatly affect how many wireless headsets can be used at once. The worst setup for wireless density is an open, sparsely furnished office where signals travel freely and are picked up by every device. In contrast, a well-furnished office with cubicles, carpets, and sound-dampening ceilings can support far more headsets without interference. In fact, the difference in density between these two environments can be up to four times greater.

How Office Furniture Impacts Bluetooth Interference

The way your office is furnished - often referred to as the "clutter factor" - can greatly impact how many wireless headsets you can use without interference. In an open, sparsely furnished office, signals travel freely and are picked up by more devices, reducing density. On the other hand, an office with cubicles, carpets, and sound-dampening ceilings can support many more headsets without signal congestion. The difference in density between these two setups can be as much as four times greater.

How Nearby Bluetooth and Wi-Fi Devices Affect Headset Performance

Even if you only occupy one floor, the wireless signals from neighbouring offices or buildings can interfere with your devices. Make sure you're aware of what technologies they're using, as they might share the same wireless spectrum. Within your office, walls and cubicles can help divide users into smaller groups, which improves performance. Taller cubicle walls, in particular, provide better isolation and help reduce signal interference in crowded areas.

How to Limit Bluetooth Headset Usage in Open-Plan Offices for Better Performance

In open office spaces with few or no walls, managing the number of active Bluetooth headset users is essential. When the number of headsets making calls exceeds the available channels, you may start to experience signal interference. To prevent this, aim to keep active calls under 50 at a time. Since not everyone will be on a call simultaneously, the total number of supported users can be higher, as long as peak usage is managed effectively.

Why Signal Isolation Improves Bluetooth and DECT Performance in Large Offices

If your office has physically separated areas that don't share the same wireless signals, you're in luck! These spaces can operate independently, which means you can support more users than in an open-plan layout. In larger offices, creating isolated sections can help increase the number of headsets you can use without running into interference issues.

Best Wireless Headsets for Offices With High Bluetooth and DECT Usage

When deploying wireless headsets in your office, selecting the right technology - Bluetooth, DECT, or Hybrid - can make all the difference in ensuring smooth, interference-free communication. Here are our top picks for each category, tailored to meet diverse workplace needs:

Best Bluetooth Headset for Offices: Yealink BH70

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Yealink BH70 Bluetooth Headset

From: $158 inc GST

• Works With PC + Mobile Phone
• All Day wearing comfort
• Enhanced 360 Busy light
• 3 mic beamforming noise cancellation

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The Yealink BH70 is a standout choice for offices that value mobility and flexibility. Powered by advanced Bluetooth 5.2 technology and Yealink's proprietary anti-interference features, this headset sets a new standard for reliable communication in busy and complex environments. With innovative design and cutting-edge technology, the BH70 ensures clear calls, long battery life, and the ability to handle higher device density.

Key Features:

• Proprietary Anti-Interference Technology: The Yealink BH70 combines the best of standard Bluetooth technology - like short packet transmission, data retransmission, Adaptive Frequency Hopping (AFH), and adaptive power adjustment - with Yealink's own adaptive algorithm. This powerful combination not only detects interference quickly but also enhances how Bluetooth's anti-interference features are applied, delivering smooth, reliable communication even in the most challenging environments.Enhanced Deployment Density: Thanks to Yealink's adaptive technology, the BH70 can support nearly twice as many headsets in the same area. In fact, it can handle 150+ devices within a 900-square-meter space, making it a perfect choice for high-density office environments.
• Extended Range: Operates seamlessly up to 50m, ensuring freedom of movement.
• Exceptional Call Clarity: Equipped with innovative 3-Mic Noise Cancellation and Acoustic Shield Technology 2.0 for distraction-free conversations.
• Long Battery Life: Offers up to 35 hours of talk time, 43 hours of music playback, and a 25-day standby mode - ideal for long workdays.

The Yealink BH70 stands out for its ability to combine the best of standard Bluetooth technologies with proprietary innovations, making it a top choice for offices that need to handle high device density and minimise interference. Whether you're in a busy open-plan office or working in a hybrid setup, the BH70 delivers the reliability and performance your team can count on.

Best DECT Headset for Large Offices: Poly Savi 8400

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Poly Savi 8400 Series Office Wireless Headset

From: $570 inc GST

• Works With - Desk Phone + PC/Mac + Mobile/Tablet
• Up to 13 hours of talk time on a single charge
• ANC in Stereo (8420) options
• DECT Wireless Headset
• Base unit also compatible with 7300, 7400 series

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For environments requiring robust performance, superior audio quality, and minimal interference, the Poly Savi 8400 series is a top-tier option. It's particularly well-suited to users needing reliable multi-device connectivity.

Key Features:

• Triple Connectivity: Connects seamlessly to a desk phone, PC, and mobile devices, with the flexibility to add a PC dongle for remote work.
• Active Noise Cancelling: The Savi 8420 model includes ANC, making it the only DECT headset that blocks out background noise for desk phone users.
• Unmatched DECT Performance: Operates on the 1880-1900 MHz DECT frequency for interference-free calls, with a range of up to 180m.
• High Security: Features secure wireless communication with 64-bit encryption and ensures no interference with Wi-Fi frequencies.

The Poly Savi 8400 is ideal for large offices, call centres, or any setting where multiple devices are used simultaneously.

Best Hybrid Bluetooth & DECT Headset: Yealink WH64

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MSRP: $119

Yealink WH64 Wireless Headset

From: $260 inc GST

Save: $119

• Works With - PC + USB Desk Phone + Mobile Phone
• DECT and Bluetooth hybrid technology
• 3-Mic Noise Cancellation
• Ergonomic and lightweight design

Buy Now

The Yealink WH64 is a groundbreaking solution that merges DECT and Bluetooth technologies, making it the first headset to offer this innovative hybrid approach. This gives businesses unmatched flexibility and adaptability across various devices and work environments.

Key Features:

• Dual Technology: Combines DECT and Bluetooth connectivity for seamless integration with PCs, mobile devices, and USB desk phones.
• Pioneering Hybrid Design: As the first headset to merge DECT and Bluetooth, it offers the best of both worlds, ensuring reliability and mobility.
• Advanced Noise Cancellation: Features 3-Mic Noise Cancellation and Acoustic Shield Technology 2.0 for crystal-clear communication.
• Ergonomic Comfort: Designed for all-day wear with a lightweight, adjustable frame.
• Versatile Range: Allows freedom of movement while maintaining stable, high-quality connections.

The Yealink WH64 is perfect for businesses looking to future-proof their wireless deployment and cater to both desk-based and mobile employees.

Need Help Choosing the Best Wireless Headset for Your Office? Contact Simply Headsets!

Planning a wireless headset deployment for your office can feel overwhelming, especially when balancing flexibility, performance, and user density. That's where we come in.

At Simply Headsets, we specialise in helping businesses like yours find the perfect wireless solutions. Whether you're looking for Bluetooth headsets for mobility and multi-device compatibility, DECT headsets for high-density support and interference-free performance, or a Hybrid solution for ultimate adaptability, our team is here to guide you every step of the way.

We'll work with you to assess your unique office needs, recommend the best technology, and ensure your wireless setup is optimised for seamless communication and productivity.

Contact us today to let us help you create a tailored wireless deployment plan and equip your office with the perfect headsets for your team.

Frequently Asked Questions About Bluetooth Interference

What Is Bluetooth Interference?

Bluetooth interference happens when too many devices compete for space on the 2.4 GHz frequency. This can lead to dropped calls, choppy audio, or poor connections-especially in busy offices where Wi-Fi, keyboards, and even microwaves share the same frequency.

What Causes Bluetooth Interference?

The biggest culprits are Wi-Fi congestion, too many Bluetooth devices, and physical obstacles like walls or metal surfaces. Since Bluetooth and Wi-Fi share the 2.4 GHz band, too many signals in one area can cause connection issues.

What Does Bluetooth Interference Sound Like?

If you're hearing static, crackling, robotic voices, or call dropouts, it's likely Bluetooth interference. It can also cause audio delays or echo, making conversations frustrating. Read our guides on how to fix static noise coming from your headset and how to fix echo and feedback issues in a headset to learn more about troubleshooting these issues.

How Can I Prevent Bluetooth Interference?

Reducing Bluetooth interference requires minimising competition for the 2.4 GHz spectrum. One of the most effective solutions is switching office Wi-Fi networks to the 5 GHz band, which frees up bandwidth for Bluetooth devices. Limiting the number of active Bluetooth headsets in a single area can also help, as can using DECT headsets instead of Bluetooth for high-density office environments. Additionally, keeping Bluetooth devices away from other wireless electronics, such as microwaves and wireless keyboards, can further reduce signal disruptions.

How Can I Stop Bluetooth Interference with Wi-Fi?

To stop bluetooth interference with wi-fi, move as many devices as possible to 5 GHz Wi-Fi. If you use Bluetooth headsets on a PC, a USB Bluetooth dongle creates a stronger, dedicated connection.

How Can I Detect Bluetooth Interference?

If your connection improves when moving closer to your device, interference is likely the issue. You can also use a Wi-Fi analyser app to check for congestion on the 2.4 GHz band.

How Do I Fix Bluetooth Connection Problems?

If your Bluetooth connection is unstable, restarting both the headset and the connected device is a good first step. Unpairing and re-pairing the headset can also resolve connectivity issues. Ensuring that both the Bluetooth headset and device have up-to-date firmware is important, as outdated software can cause compatibility problems. If interference persists, consider switching to a Bluetooth dongle for computers, which provides a dedicated connection and reduces reliance on built-in Bluetooth chips that may be weaker.

How Do I Improve My Bluetooth Connection?

To improve Bluetooth performance, keep the headset within its optimal range (typically 10 meters for Class 2 Bluetooth devices) and avoid physical barriers like walls or metal surfaces. Using a USB Bluetooth adapter can strengthen connections, especially when using headsets with computers. Additionally, choosing a headset with Adaptive Frequency Hopping (AFH) can help minimise interference by automatically selecting clearer channels within the Bluetooth frequency range.

What Frequency Interferes with Bluetooth?

Bluetooth runs on 2,402 MHz - 2,480 MHz, the same as Wi-Fi, microwaves, and wireless keyboards. Switching Wi-Fi to 5 GHz and using DECT headsets can reduce interference.

How Many Bluetooth Headsets Can Be Used in an Office at the Same Time?

Most offices can handle up to 50 Bluetooth headsets before experiencing interference. In high-density setups, DECT headsets are a better choice to avoid congestion.

How Far Can a Bluetooth Headset Reach?

The range of a Bluetooth headset depends on its power class. Class 2 Bluetooth headsets, the most common type, typically work within 10 meters. Class 1 Bluetooth headsets can extend up to 100 meters in ideal conditions but may experience interference in office settings. Using a USB Bluetooth adapter (dongle) can improve connectivity and extend the range when paired with a compatible device.

Is DECT Better Than Bluetooth for Office Headsets?

DECT headsets are usually better in large offices because they use 1.9 GHz, avoiding Bluetooth and Wi-Fi interference. Bluetooth is best for mobility and multi-device use, but DECT is more reliable for high call volumes.

How Do I Increase the Number of Bluetooth Headsets in an Office?

To support more Bluetooth headsets in an office, reduce interference and manage wireless density. Strategies include switching Wi-Fi to 5 GHz, limiting the number of active Bluetooth devices, using headsets with Adaptive Frequency Hopping (AFH), and incorporating DECT headsets where possible. For larger offices, a mix of Bluetooth and DECT technology ensures a smoother, interference-free communication experience.

Why Do Wi-Fi and Bluetooth Interfere With Each Other?

Wi-Fi and Bluetooth operate in the same 2.4 GHz frequency band, which leads to interference when multiple devices compete for bandwidth. This can cause audio dropouts, lag, and connection issues. One way to minimize this problem is to move Wi-Fi networks to the 5 GHz band, allowing Bluetooth devices to function without competing for the same frequencies.

Can Bluetooth Work Through Walls?

Bluetooth signals can pass through walls, but their strength weakens significantly depending on the material. Thin drywall has little impact, but brick, metal, and concrete walls can block or reflect Bluetooth signals, causing dropouts and reducing range. For offices with many physical obstructions, DECT headsets or Class 1 Bluetooth headsets may provide better coverage.

What Is the Best Bluetooth Headset for a Busy Office?

The best Bluetooth headset for a busy office is one that includes Adaptive Frequency Hopping (AFH), noise cancellation, and strong battery life. Headsets like the Yealink BH70 and Poly Voyager 4300 series are designed for high-density workspaces, offering better interference management and clear audio quality. For environments with heavy wireless congestion, a DECT headset like the Poly Savi 8400 is a more reliable option.

How Do I Tell If My Bluetooth Headset Is Interfering With Other Devices?

If your Bluetooth headset is causing interference with other devices, you may notice Wi-Fi speed drops, distorted audio, or connectivity issues with wireless peripherals like keyboards or mice. To test for interference, turn off your Bluetooth device and check if other wireless connections improve. If interference is an issue, using a different frequency (like DECT) or switching Wi-Fi to 5 GHz can help resolve the problem.