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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") ### Call history [Different call history categories](/gb/get-started/cloud-telephony/lexicon/knowledge-base-detail/call-history#section-3) [Available information on individual calls in a call history](/gb/get-started/cloud-telephony/lexicon/knowledge-base-detail/call-history#section-4) [Call lists in telephone systems and routers](/gb/get-started/cloud-telephony/lexicon/knowledge-base-detail/call-history#section-5) # Call history Call history, also known as call list, provides itemised information about telephone calls or connection requests of a telephone extension. Call lists can be provided by various devices. Thus, telephones as well as [telephone systems](/gb/gb/products/cloudya) and routers can be equipped with a call history function. In cordless [DECT](/gb/get-started/cloud-telephony/lexicon/knowledge-base-detail/dect) telephones, the call history can usually be retrieved directly on the handset via the base station. In many cases it is possible to directly dial the telephone number for a reconnection by selecting a particular entry. The number of entries in the call history is limited; however, it may vary greatly among different devices. When the maximum number of entries is reached, the oldest entries are removed from the list to accommodate the new entries. ### Different call history categories The call history can be broken down into different categories for clear representation. It is also common practice to maintain individual call histories per category. Possible categories for call history are incoming calls (also caller list) and outgoing calls (also call logs). The incoming calls list can be further subdivided into received and missed calls. Graphical displays often use category symbols beside the telephone number so that it can be easily identified which number is assigned to which category. ### Available information on individual calls in a call history In addition to the category of each individual call other information can also be saved for each entry in the call list. This information includes telephone number of the caller, dialled telephone number, start and end time of the call as well as the duration of the call. In modern, networked telephone systems, it is also possible to display other data regarding each list entry from a customer database. In DECT telephone equipment, the mobile handset number can also be included in the call history if required. ### Call lists in telephone systems and routers If call list function is provided in telephone systems or routers, then these can often be accessed and edited directly using a computer. If a phone feature is integrated in the computer system, then calls can be started by clicking on an entry. ### 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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