DECT or Bluetooth Headsets

What is the difference?
So one of the big questions we often hear is “do I buy a Bluetooth or DECT headset?“.
Well each of these has its own advantages, and, naturally drawbacks.

As we are looking into how these two data transmission options affect headset usage we will look at the main differences that a DECT or Bluetooth headset will have in terms of set up and operation.

What is Bluetooth ?

Bluetooth was initially developed by Ericsson in the 1990s and named after the 10th century Danish king Harald “Bluetooth” Gormsson. It is a short-range wireless technology which allows fast data transmission. It has come to be the standard connectivity choice for hundreds of applications. It supports connection to multiple devices from one adapter.

What is DECT ?

DECT : (Digital Enhanced Cordless Telecommunications) also emerged during the 1990s. DECT controls a link with a connected base station and a handset ( or other endpoint ), the two parts sharing a 128-bit Unique Authentication Key (UAK) so that a secure handshake can be instigated. Its primary application has been for digital cordless phones.



A DECT headset will have a far greater range than a Bluetooth one. DECT will reach up to 50m indoors whilst Bluetooth is more of a ‘line of sight’ / 15m range. DECT’s range can be useful in many situations.

Increased range can be great for getting up from your desk whilst on a call, or if working from home, to go make a tea/ coffee.


DECT security is far higher than that of Bluetooth. Although DECT uses a 64-bit encryption ( compared to Bluetooth’s 128-bit ) it has a far more complex pairing process which is also supported by a three tier security chain.

Higher levels of security are very desirable in many organisations – particularly where potentially sensitive information is processed.


Whereas a DECT endpoint ( headset or telephone ) will only connect to one base station at a time ( though several can be used for increased range ) a Bluetooth headset can be connected to multiple devices simultaneously.

Multi device connectivity can be great – allowing telephones, mobiles and tablets to connect to your headset at the same time

In summary we would say that if you see security and range as primary considerations when choosing a headset then DECT will be your first port of call. On the other hand if range is not a requirement and you would like to also use your headset for say, music appreciation connected to a mobile or laptop then Bluetooth offers a great option.

View some options below