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[+44 330 383 8000](tel:+443303838000 "+44 330 383 8000") ![](/images/getstarted-writetous-navbar-int_ZY7MOf.webp) ### Write to us Fill out our request form. Our experts will respond as soon as possible. [Write to us](/gb/request-information "Write to us") ### Multi Cell DECT # Multi Cell DECT The [DECT](/gb/get-started/cloud-telephony/lexicon/knowledge-base-detail/dect) (Digital Enhanced Cordless Telecommunications) standard is the accepted standard in Europe for wireless telephony inside buildings. It enables mobile telephony, with good voice quality and with a range of approximately 50 metres or more around the DECT base station. Outdoor distances of up to 300 metres are theoretically possible. In Europe, DECT uses the frequency range of 1880-1900 MHz for radio transmission. This range is different from that used by other short-distance wireless technologies such as Wi-Fi and [Bluetooth](/gb/get-started/cloud-telephony/lexicon/knowledge-base-detail/bluetooth). As a result, these technologies do not interfere with each other and can be operated in parallel. For the transmission of the actual voice audio, the G.726 codec is used, which, depending on the voice connection, requires a [bandwidth](/gb/get-started/cloud-telephony/lexicon/knowledge-base-detail/bandwidth) of 32 kbit/s. Most private households use the solution known as [Single Cell DECT](/gb/get-started/cloud-telephony/lexicon/knowledge-base-detail/single-cell-dect). A DECT base station connects to the telephone network and allows up to six DECT cordless handsets to connect to the base station. For larger businesses and buildings in which a greater number of cordless phones are to be supported, the Single Cell DECT solution is no longer sufficient. In this instance, Multi Cell DECT installations are used. Multi Cell installations like this support numerous base stations and provide a comprehensive DECT radio network, with multiple cells. This makes it possible, depending on the number of supported cells and base stations, to operate hundreds of handsets throughout the premises. As the individual radio cells overlap within the building, connections are automatically transferred when changing from one cell to the other, meaning that calls are continued without interruption. This is known as the so-called “seamless handover”. For those making the calls, this makes it perfectly possible to move freely within the area served by the Multi Cell DECT during a phone call. Want to know more? [Check  our leaflets](https://www.nfon.com/en/service/documentation/manuals/dect-phones)! ### Related Articles ### DECT Digital Enhanced Cordless Telecommunications, abbreviated to DECT, is the name of a standard for the wireless transmission of telephone calls or data. DECT is often used for cordless telephony in buildings and has established a strong presence in this market. A cordless phone with this standard usually consists of a DECT base station and one or more handsets. The DECT base station is connected to the network by an analogue or digital phone line. It handles the radio part of the phone connectionand voice transmission with the handsets. Systems using the Digital Enhanced Cordless Telecommunications standard allow a single base station to support up to 6 cordless handsets. The frequency range uses various radio bands at around the 2 GHz range. A handset can be used at distances of up to 50 metres indoors and up to 300 metres in an open environment and reach standard data rates of 32 kilobits per second. The maximum transmission power of the base station is limited, so that coverage over any greater distance can only be achieved with booster units. In order to be used, a handset must first be authenticated by a base station. In general, this is accomplished by using a special PIN, set by the user. The DECT standard can also provide the encrypted transfer of user data, thereby protecting it from unauthorised access. However, this type of transmission is relatively rarely used and is not implemented in many phones. In order to reduce so-called electric smog there are various methods used within Digital Enhanced Cordless Telecommunications to minimise the transmitting power of both the base station and the handset while in idle mode. These methods are often called ECO DECT. Want to know more? [Check our leaflets](https://www.nfon.com/en/service/documentation/manuals/dect-phones)! 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