| In force components |
Number
|
Title |
Status |
K.21 (08/22)
� |
Resistibility of telecommunication equipment installed in customer premises to overvoltages and overcurrents
�
|
In force
|
Guide (04/2012)
� |
Guide on the use of the overvoltage resistibility Recommendations
�
This guide assists test laboratories in implementing the correct tests for ITU-T K.20, K.21, and K.45 compliance testing. It is based on K.44 (2012-05).
|
In force
|
�
� |
| Superseded and Withdrawn components |
Number
|
Title |
Status |
K.21 (11/88)
� |
Resistibility of subscribers' terminals to overvoltages and overcurrents
�
|
Superseded
|
K.21 (10/96)
� |
Resistibility of subscriber's terminal to overvoltages and overcurrents
�
|
Superseded
|
K.21 (10/00)
� |
Resistibility of telecommunication equipment installed in costumer premises to overvoltages and overcurrents
�
|
Superseded
|
K.21 (07/03)
� |
Resistibility of telecommunication equipment installed in customer premises to overvoltages and overcurrents
�
|
Superseded
|
K.21 (2003) Erratum 1 (01/04)
� |
Correction to table 7/K.21
�
|
Superseded
|
K.21 (04/08)
� |
Resistibility of telecommunication equipment installed in customer premises to overvoltages and overcurrents
�
|
Superseded
|
K.21 (2008) Erratum 1 (05/08)
� |
�
Relates to English prepublished version only
|
Superseded
|
K.21 (11/11)
� |
Resistibility of telecommunication equipment installed in customer premises to overvoltages and overcurrents
�
|
Superseded
|
K.21 (2011) Erratum 1 (05/14)
� |
�
|
Superseded
|
K.21 (04/15)
� |
Resistibility of telecommunication equipment installed in customer premises to overvoltages and overcurrents
�
|
Superseded
|
K.21 (06/16)
� |
Resistibility of telecommunication equipment installed in customer premises to overvoltages and overcurrents
�
|
Superseded
|
K.21 (12/16)
� |
Resistibility of telecommunication equipment installed in customer premises to overvoltages and overcurrents
�
|
Superseded
|
K.21 (07/17)
� |
Resistibility of telecommunication equipment installed in customer premises to overvoltages and overcurrents
�
|
Superseded
|
K.21 (10/18)
� |
Resistibility of telecommunication equipment installed in customer premises to overvoltages and overcurrents
�
|
Superseded
|
K.21 (07/19)
� |
Resistibility of telecommunication equipment installed in customer premises to overvoltages and overcurrents
�
|
Superseded
|
K.21 (2019) Amendment 1 (06/20)
� |
�
The file initially posted on 3.9.2020 was replaced to correct a minor formatting issue in Table 1a.
|
Superseded
|
