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ITU-T K.21 (2011) Err. 1 (05/2014)

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Citation:	https://handle.itu.int/11.1002/1000/12200
Series title:	K series: Protection against interference
Approval date:	2014-05-12
Provisional name:	K.y
Approval process:	P
Status:	Superseded
Maintenance responsibility:	ITU-T Study Group 5
Further details:	Patent statement(s) [8 related work items in progress]

EditionsRelated Supplement(s)Implementer's guide(s)Related technical papers and reports

Ed.	ITU-T Recommendation	Status	Summary	Table of Contents	Download
13	K.21 (08/2022)	In force	here	here	here
12.1	K.21 (2019) Amd. 1 (06/2020)	Superseded	here	here	here
12	K.21 (07/2019)	Superseded	here	here	here
11	K.21 (10/2018)	Superseded	here	here	here
10	K.21 (07/2017)	Superseded	here	here	here
9	K.21 (12/2016)	Superseded	here	here	here
8	K.21 (06/2016)	Superseded	here	here	here
7	K.21 (04/2015)	Superseded	here	here	here
6	K.21 (11/2011)	Superseded	here	here	here
6.0	K.21 (2011) Err. 1 (05/2014)	Superseded	-	-	here
5	K.21 (04/2008)	Superseded	here	here	here
5.0	K.21 (2008) Err. 1 (05/2008)	Superseded	-	-	here
4	K.21 (07/2003)	Superseded	here	here	here
4.0	K.21 (2003) Err. 1 (01/2004)	Superseded	-	-	here
3	K.21 (10/2000)	Superseded	here	here	here
2	K.21 (10/1996)	Superseded	here	here	here
1	K.21 (11/1988)	Superseded	-	here	here


ITU-T Supplement	Title	Status	Summary	Table of contents	Download
K Suppl. 3 (10/2015)	ITU-T K.20, K.21, K.45, K.82 – Additional criteria to protect telecommunication cabling during a power cross event	In force	here	here	here
K Suppl. 8 (11/2017)	Resistibility analysis of 5G systems	In force	here	here	here
K Suppl. 9 (05/2019)	5G technology and human exposure to radiofrequency electromagnetic fields	In force	here	here	here
K Suppl. 10 (11/2017)	Analysis of electromagnetic compatibility aspects and definition of requirements for 5G mobile systems	In force	here	here	here
K Suppl. 13 (12/2021)	Radiofrequency electromagnetic field (RF-EMF) exposure levels from mobile and portable devices during different conditions of use	In force	here	here	here
K Suppl. 14 (09/2019)	The impact of RF-EMF exposure limits stricter than the ICNIRP or IEEE guidelines on 4G and 5G mobile network deployment	In force	here	here	here
K Suppl. 15 (09/2018)	ITU-T K.20, K.21 and K.44 – Internal DC powering interface surge testing factors	In force	here	here	here
K Suppl. 16 (10/2022)	Electromagnetic field compliance assessments for 5G wireless networks	In force	here	here	here
K Suppl. 19 (09/2019)	Electromagnetic field (EMF) strength inside underground railway trains	In force	here	here	here
K Suppl. 21 (05/2021)	ITU-T K.21 – Rationale for setting resistibility requirements of telecommunication equipment installed in customer premises against lightning	In force	here	here	here
K Suppl. 29 (07/2022)	Electromagnetic field strength inside and outside of electric vehicles using wireless power transfer technology	In force	here	here	here
K Suppl. 32 (06/2023)	Case studies of radio frequency- electromagnetic field (RF-EMF) assessment	In force	here	here	here

Title	Approved on	Download
Guide on the use of the overvoltage resistibility for Recommendations ITU-T K.20, K.21 and K.45	2023-11-22
Guide on the use of the overvoltage resistibility for Recommendations ITU-T K.20, K.21 and K.45	2012-04-19	here

Title	Approved on	Download
Mitigation measures for telecommunication installations – Chapter 10	2006	here
Mitigation measures for telecommunication installations	2004	here
Earthing and bonding	2003	here
Guide to the use of ITU-T Publications produced by Study Group 5 aimed at achieving Electromagnetic Compatibility and Safety	2002	here
Earthing of telecommunication installations	1976	here