Editing DECT (section)

{{Short description|ETSI standard for cordless telephony}}
{{Use dmy dates|date=December 2014}}
{{Infobox technology standard
| title = DECT
| long_name = Digital enhanced cordless telecommunications
| image = File:Радиотелефон.jpg
| image_size = 
| alt = 
| caption = [[Gigaset]] A165 phone with [[base station]]. In DECT terminology, the phone is the 'portable part' (PP) and the base station the 'fixed part' (FP).
| abbreviation = DECT
| native_name = <!-- Name in local language. If more than one, separate using {{plain list}} -->
| native_name_lang = <!-- ISO 639-1 code e.g. "fr" for French. If more than one, use {{lang}} inside native_name items instead -->
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| year_started = <!-- {{Start date|YYYY|MM|DD|df=y}} -->
| first_published = <!-- {{Start date|YYYY|MM|DD|df=y}} -->
| version = 
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| preview = 
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| organization = [[ETSI]], DECT Forum
| committee = 
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| base_standards = 
| related_standards = 
| predecessor = [[CT2]]{{efn|CT3 was only available as prototype and subsequently replaced by DECT}}
| successor = 
| domain = [[Cordless telephony]]
| license = 
| copyright = 
| website = {{URL|https://etsi.org/technologies/dect}}
}}

'''Digital Enhanced Cordless Telecommunications''' ('''DECT''') is a [[cordless telephone|cordless telephony]] standard maintained by [[ETSI]]. It originated in [[Europe]], where it is the common standard, replacing earlier standards, such as [[CT1]] and [[CT2]].<ref name=rohde>{{cite web |url=http://www2.rohde-schwarz.com/en/technologies/Wireless_Connectivity/DECT/information/ |title=DECT Information |website=2.rohde-schwarz.com |access-date=2 January 2018 |archive-date=1 November 2012 |archive-url=https://web.archive.org/web/20121101103059/http://www2.rohde-schwarz.com/en/technologies/Wireless_Connectivity/DECT/information/ |url-status=dead }}</ref> Since the DECT-2020 standard onwards, it also includes [[Internet of things|IoT]] communication.

Beyond Europe, it has been adopted by [[Australia]] and most countries in [[Asia]] and [[South America]]. North American adoption was delayed by [[United States]] radio-frequency regulations. This forced development of a variation of DECT called '''DECT&nbsp;6.0''', using a slightly different frequency range, which makes these units incompatible with systems intended for use in other areas, even from the same manufacturer. DECT has almost completely replaced other standards in most countries where it is used, with the exception of North America.

DECT was originally intended for fast roaming between networked base stations, and the first DECT product was [[Net3|Net<sup>3</sup>]] wireless LAN. However, its most popular application is single-cell cordless phones connected to [[plain old telephone service|traditional analog telephone]], primarily in home and small-office systems, though gateways with multi-cell DECT and/or DECT repeaters are also available in many [[Business telephone system#Private branch exchange|private branch exchange]] (PBX) systems for medium and large businesses, produced by [[Panasonic]], [[Mitel]], [[Gigaset]], [[Ascom (company)|Ascom]], [[Cisco]], [[Grandstream]], [[Snom]], [[Polycom|Spectralink]], and RTX. DECT can also be used for purposes other than cordless phones, such as [[baby monitor]]s, [[wireless microphone]]s and industrial sensors. The [[ULE Alliance]]'s [[DECT Ultra Low Energy|DECT ULE]] and its "HAN FUN" protocol<ref>''HAN FUN'', "Home Area Network FUNctional protocol".</ref> are variants tailored for home security, automation, and the [[internet of things]] (IoT).

The DECT standard includes the [[generic access profile]] (GAP), a common interoperability profile for simple telephone capabilities, which most manufacturers implement. GAP-conformance enables DECT handsets and bases from different manufacturers to interoperate at the most basic level of functionality, that of making and receiving calls. Japan uses its own DECT variant, J-DECT, which is supported by the DECT forum.<ref>{{cite web| url = https://www.dect.org/| title = DECT Forum}}</ref>

The New Generation DECT (NG-DECT) standard, marketed as [[CAT-iq]] by the DECT Forum, provides a common set of advanced capabilities for handsets and base stations. CAT-iq allows interchangeability across [[IP-DECT]] base stations and handsets from different manufacturers, while maintaining backward compatibility with GAP equipment. It also requires mandatory support for [[wideband audio]].

[[#DECT-2020|DECT-2020]]  New Radio, marketed as NR+ (New Radio plus), is a [[5G]] data transmission protocol which meets ITU-R [[IMT-2020]] requirements for ultra-reliable low-latency and massive machine-type communications, and can co-exist with earlier DECT devices.<ref name=dect-2020-itu-r-approval/><ref name=etsi-tr-103810>[https://portal.etsi.org/webapp/workprogram/Report_WorkItem.asp?WKI_ID=62115 ETSI TR 103 810 V1.1.1 (2021-11). Final Evaluation Report on DECT-2020 NR.] ETSI, 23 November 2021.</ref><ref name=DECT_NR_plus>{{cite web|url=https://www.dect.org/userfiles/file/A.%20Current%20Documents/NRplus/DF_PR%20DECT%20NRplus_final_2022-02-24.pdf |archive-url=https://web.archive.org/web/20220224233921/https://www.dect.org/userfiles/file/A.%20Current%20Documents/NRplus/DF_PR%20DECT%20NRplus_final_2022-02-24.pdf |archive-date=2022-02-24 |url-status=live|title=ITU-R Approves DECT-2020 as New 5G Technology Standard. DECT Forum will be Promoting the Standard under the Name NR+|work=DECT Forum|date=2022-02-24}}</ref>