DECT or Wi-Fi? Which Is Right For Microsoft Teams?


There has been an age-old discussion when replacing handsets in telecom deployments.

Is DECT or Wi-Fi right for your environment?

We usually see benefits of both cited for different working conditions and network setups.

Upon moving to Microsoft Teams, while desk workers can remove the need for a handset completely (mobile app or softphone with headset/mic), deskless workers still have a decision to make.

Sure, they could opt to use the Teams mobile app as well. But why weren’t they using apps and softphones beforehand then?

The answers lie within two key areas:

  1. Bring your own device policies (BYOD)
  2. The need for more robust handsets in different environments.

While most users want to use their own phone for the majority of work, dropping it from a great height or having it run over by a forklift is not on anyone’s agenda.

This is the argument for a rugged device like any classic telecoms deployment. Just because we’re now using Teams as the PBX, it doesn’t mean the use case for portable devices changes.

The benefits of such devices remain:

  • Cleanability
  • Dustproof
  • Robust
  • Integration with monitoring and alarm systems
  • Advanced messaging capabilities
  • Motion sensors

When it comes to DECT vs Wi-Fi, arguments over the past decades have concluded that DECT is often both better quality and cheaper than extended Wi-Fi or 3G/4G/5G. For Wi-Fi phones to match or better than quality and reliability, there needs to be serious network quality powering the devices you connect on top of it.

Instead of forcing teams to adopt a mobile app, despite acknowledging they were unsuitable before, Teams implementations must consider whether DECT or Wi-Fi is the best choice once more.

Let’s take a look at the options for Microsoft Teams when it comes to portable devices.

Certified DECT devices for Microsoft Teams

As of August 2022, there are two vendors providing Microsoft Teams DECT equipment.

They are:

Spectralink DECT for Microsoft Teams

Spectralink was first to market with its DECT solutions for Microsoft Teams.

You can now use any of the following devices as part of your DECT solution when rolling out (or after) you’ve moved to Teams:

DECT handsets:
  • DECT 72 series (general portable use)
  • DECT 75 series (general portable use)
  • DECT 76 series high-end)
  • DECT 77 series (high-end)

The higher the number in the Spectralink series, the more functionality you get on the handset.

The 72 series is great for a voice-centric user that doesn’t need much functionality aside from calling.
Moving up in model numbers adds headphone sockets and/or Bluetooth, advanced (e.g. receive and confirm) messaging, higher levels of robustness, and cleanability (the 77 series being the ‘healthcare’ version of the equivalent 76 series, for example).

At the highest end, you have built-in accelerometers that you can use to trigger alarms and actions based on devices moving when they shouldn’t be (e.g. running away from a fire), or not moving when they should be (e.g. I’ve been overwhelmed by a gas and passed out).

They also include hardware like ripcords (e.g. full emergency a patient has escaped the psychiatric ward). This functionality is legally required in some countries for ‘Lone Worker protection’.

Like any DECT deployment, you’ll need a base station to charge the handsets and a server to operate and maintain the connection between Teams Phone SIP and your handsets.

The supported Spectralink base station is the IP-DECT base station. Depending on conditions, the typical range for this base station is 50 meters indoors and 300 meters outdoors.

Supported servers (which can be physical or virtual) include:

  • IP-DECT 200
  • IP-DECT 400
  • IP-DECT 6500
  • VIP DECT Server One (support for up to 4,096 base stations)

Poly DECT for Microsoft Teams

Poly has announced two DECT options for Teams; both IP-65 rated, dust-tight, and waterproof.

  • Poly Rove 30
  • Poly Rove 40

The main differences between the Rove 30 and Rove 40 are that the 40 includes a dedicated emergency button, vibration mode, and the ability to connect a Bluetooth headset.

Both are drop tested to 2 meters and have 18-hours talk time and 300-hours standby time.

Supported base stations include:

  • Poly Rove B2
  • Poly Rove B4

The B2 supports up to 20 handsets whereas the B4 supports up to 30 at a time.

The Rove B2 is available as a single cell (supporting one base) or dual cell (supporting two bases). The Rove B4 is multi cell and can support up to 254 bases per system.

Wi-Fi devices for Microsoft Teams

As of August 2022, there aren’t any certified Wi-Fi phones for Microsoft Teams.

Microsoft is yet to introduce a certification program for Wi-Fi-enabled phones but it must be on the radar in the not-so-distant future.

As Microsoft Teams Phone now boasts over 12 million voice-enabled users, there is a serious market for VoIP seats within Microsoft Teams.

And, as Dom Black, Research Director at Cavell Group, points out, cloud communications (UCaaS) penetration sits at just over 18%, indicating that there is still a huge global market left to migrate to the cloud.

Wi-Fi devices are crucial to those environments where DECT is not accessible or possible due to network environments.


When it comes to choosing between DECT and Wi-Fi for Microsoft Teams, the two major elements to consider are:

  1. DECT is now confirmed as supported by Microsoft; with some providers already having passed the certified devices process.
  2. The age-old DECT vs Wi-Fi features and benefits where one suits a different environment better.

Whatever you decide, make sure you choose the option best for your business.


About Author

30 years’ experience working in the enterprise telecoms industry. A background in product management, product marketing and go-to-market consultancy roles at leading international telecoms vendors: Nortel, Avaya, BroadSoft and Cisco. Paul helped launch the first DECT cordless products at Nortel before taking international roles to help launch and scale IP-PBX, unified communications, contact center and cloud/hosted communications offers through service providers. Now at Spectralink, he’s responsible for product management of Spectralink DECT portfolio.

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