Key takeaways
- DECT uses its own radio band, so it doesn't compete with Wi-Fi
- Wi-Fi phones reuse your existing wireless network
- Multi-cell DECT supports roaming across large sites
- A site survey avoids dead spots either way
Not every employee sits at a desk. Warehouse supervisors, nurses, hotel staff and showroom teams all need to take calls while moving around. Cordless business phones solve this, and the main choice is between DECT and Wi-Fi handsets.
How DECT works
DECT phones connect to base stations that use a dedicated radio band reserved for voice. Because that band isn't shared with laptops and other devices, call quality is consistent and battery life is long. Base stations connect to your IP phone system, and several bases can be combined so staff roam across a large building without dropping calls.
How Wi-Fi phones work
Wi-Fi phones connect to your wireless network like any other device. If you already have enterprise Wi-Fi with good coverage, there is no separate radio system to install. However, the network must be designed for voice, with fast roaming between access points and quality of service so calls aren't affected by heavy data traffic.
Comparing the two
Key differences to consider:
- DECT offers longer battery life and simpler voice-focused coverage
- Wi-Fi phones can run apps, messaging and scanners
- DECT avoids congestion on busy Wi-Fi networks
- Wi-Fi needs voice-grade design and roaming support
- Rugged versions of both exist for warehouses and healthcare
- Both integrate with modern IP PBX and cloud phone systems
Where each fits
DECT is usually the better choice for warehouses, hotels and large sites where reliable voice is the priority. Wi-Fi phones suit organisations that want handsets to double as data devices, for example for stock scanning or nurse call alerts, and that already have a strong wireless network.
Plan coverage first
Concrete walls, metal racking and lift shafts all affect radio signals. A site survey shows where base stations or access points are needed so staff aren't dropping calls in the far corner of the building. We survey, install and connect cordless systems to your existing phone platform.
Frequently asked questions
Typically up to around 50 metres indoors, less through thick walls. Multi-cell systems extend coverage.
Yes. Most business DECT systems register with cloud and on-premise IP phone systems.
DECT handsets often last a full shift of talk time and several days on standby.
Yes. Both register as extensions on the same phone system.
