The Types and Range of DECT Phones

Cordless phones explained

DECT stands for Digital Enhanced Cordless Technology. In simple terms, a DECT phone is a cordless phone that works with your landline phone line. It is the type of phone set that allows you to roam in the house or in the office while you talk. While a DECT phone is technically a mobile phone, we don’t use this term for it, as the use of mobile and a DECT phones are quite different.

A DECT phone has a base and one or more handsets. The base phone is like any telephone set, with a PSTN phone line connected to it. It radiates signals to the other handsets, and wirelessly connects them to the PSTN landline. This way, you can take a call or make a call both with the base phone or the handsets. In most new DECT phones, both the base phone and handsets are cordless, meaning they can both be used to talk while walking around.

Why Use DECT Phones?

The main appeal of a DECT phone is its cordless functionality. You also have the advantage of setting up different points in a home or office to place calls, as calls can be transferred from one handset or base to another.

DECT phones also have an intercom function, which allows for internal communication in a home or office. This allow you to place one phone on one floor and another on the other, for example. Intercom calls are free since you don’t use external lines.


How far can you travel from the base phone and still keep a call? It depends on the DECT phone's range. which is typically around 300 meters. High-end phones provide greater distances. However, the ranges displayed by manufacturers are only theoretical. The actual range depends on various factors, including climate, radio interference, and walls and other obstacles. 

Voice Quality

Your DECT phone’s voice quality depends largely on the manufacturer. High-end and more expensive phones deliver clearer sound quality than low-end devices. Other factors include the codecs used, the frequency, and hardware, such as the type of microphone or speakers used.

Your voice quality can also be affected by environmental interference. For example, some manufacturers warn that voice quality may suffer if the phone is used near appliances, other phones, or even computers.

DECT Phones and Your Health

Some health agencies have reported that emissions from DECT phones are too low—that is, below the international standard of acceptable radiation levels—to cause significant harm. However, there is still some disagreement over the technical details.

DECT Phones and VoIP

VoIP works perfectly well with traditional phones connected to a landline. Your DECT phone does connect to a landline, but it extends to one or more handsets. How well a DECT phone works with VoIP depends on the type of VoIP service you are using. Consider residential VoIP services like Vonage or Ooma.

DECT Phone Drawbacks

Leaving aside the possible health hazards, there are a few drawbacks with DECT phones. A DECT phone requires continuous power. The handsets have rechargeable batteries like mobile phones, but here, we are speaking of the base phone set, which needs a wired power source.

Some base stations have options for batteries, but they can't last forever. That makes DECT phones a poor solution in any place without a reliable source of electricity. Add to that the issue of voice quality and interference, as well as the power demands, and you can see how the cons weigh against the pros.

Buying a DECT Phone

Learn about the best DECT phones to buy right now, and find the right solution for your needs.

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