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ITU-T SG 5  C 

ITU-T SG 5

Environment, climate change and circular economy

Study Period 2017
Results:23 total items.
Contributions  [ Source: Nippon Telegraph and Telephone Corporation (NTT) (Japan) ]  [ AI/Question: Q2/5 ]   Documents / Contributions
 
Number 
Title Source AI/Question
 		Date
[ 835 ]  
  		Discussion on exception conditions included in K.21, K.45 "Resistibility of telecommunication equipment installed in customer premises, access and trunk networks to over voltages and over currents"     Nippon Telegraph and Telephone Corporation (NTT) (Japan)   Q2/5   2021-11-15
[ 834 ]  
  		Discussion on future revision of K.Sup.24: "Rationale for setting resistibility requirements of telecommunication equipment installed in a telecommunication centre against lightning"     Nippon Telegraph and Telephone Corporation (NTT) (Japan)   Q2/5   2021-11-15
[ 776 ]  
(Rev.1)  		Revision of Series K Supplement 22 "Rationale of resistibility of telecommunication equipment installed in the access and trunk networks against lightning"     Nippon Telegraph and Telephone Corporation (NTT) (Japan)   Q2/5   2021-04-27
[ 775 ]  
(Rev.1)  		Proposed revision of K.Sup.21 "Rationale for setting resistibility requirements of telecommunication equipment installed in customer premises against lightning"     Nippon Telegraph and Telephone Corporation (NTT) (Japan)   Q2/5   2021-04-27
[ 774 ]  
(Rev.1)  		Draft Supplement ITU-T K.20 (K.Sup.telecom_centre):"Rationale for setting resistibility requirements of telecommunication equipment installed in a telecommunication centre against lightning"     Nippon Telegraph and Telephone Corporation (NTT) (Japan)   Q2/5   2021-04-27
[ 710 ]  
(Rev.1)  		Draft Supplement ITU-T K.20 (K.Sup.telecom_centre):"Rationale for setting resistibility requirements of telecommunication equipment installed in a telecommunication centre against lightning"     Nippon Telegraph and Telephone Corporation (NTT) (Japan)   Q2/5   2020-10-05
[ 709 ]  
(Rev.1)  		Draft Supplement to ITU-T K.45 (K.Sup.access_trunk_networks): "Technical rationale of resistibility of telecommunication equipment installed in the access and trunk networks against lightning"     Nippon Telegraph and Telephone Corporation (NTT) (Japan)   Q2/5   2020-10-05
[ 708 ]  
  		K.Sup.customer to-ITU-T-K.21 on "Rationale for setting resistibility requirements of telecommunication equipment installed in customer premises against lightning": 4th draft of Supplement     Nippon Telegraph and Telephone Corporation (NTT) (Japan)   Q2/5   2020-10-05
[ 705 ]  
  		An issue to be considered when applying CDN for surge immunity test in IEC 61000-4-5     Nippon Telegraph and Telephone Corporation (NTT) (Japan)   Q4/5, Q2/5   2020-10-05
[ 642 ]  
(Rev.1)  		K.Sup.access_trunk_networks to-ITU-T-K.45 on"Technical rationale of resistibility of telecommunication equipment installed in the access and trunk networks against lightning": 3rd draft of Supplement     Nippon Telegraph and Telephone Corporation (NTT) (Japan)   Q2/5   2020-04-27
[ 641 ]  
  		K.Sup.telecom_centre to-ITU-T-K.20 on"Rationale for setting resistibility requirements of telecommunication equipment installed in a telecommunication centre against lightning": 3rd draft of Supplement     Nippon Telegraph and Telephone Corporation (NTT) (Japan)   Q2/5   2020-04-27
[ 640 ]  
(Rev.1)  		K.Sup.customer to-ITU-T-K.21 on "Rationale for setting resistibility requirements of telecommunication equipment installed in customer premises against lightning": 3rd draft of Supplement     Nippon Telegraph and Telephone Corporation (NTT) (Japan)   Q2/5   2020-04-27
[ 634 ]  
  		An issue to be considered when applying CDN for surge immunity test in IEC 61000-4-5     Nippon Telegraph and Telephone Corporation (NTT) (Japan)   Q4/5, Q2/5   2020-04-27
[ 563 ]  
(Rev.1)  		K.Sup.access_trunk_networks to-ITU-T-K.45 on"Technical rationale of resistibility of telecommunication equipment installed in the access and trunk networks against lightning": 2nd draft of Supplement     Nippon Telegraph and Telephone Corporation (NTT) (Japan)   Q2/5   2019-09-02
[ 562 ]  
(Rev.1)  		K.Sup.telecom_centre to-ITU-T-K.20 on"Rationale for setting resistibility requirements of telecommunication equipment installed in a telecommunication centre against lightning": 2nd draft of Supplement     Nippon Telegraph and Telephone Corporation (NTT) (Japan)   Q2/5   2019-09-02
[ 561 ]  
(Rev.1)  		K.Sup.customer to-ITU-T-K.21 on "Rationale for setting resistibility requirements of telecommunication equipment installed in customer premises against lightning": 2nd draft of Supplement     Nippon Telegraph and Telephone Corporation (NTT) (Japan)   Q2/5   2019-09-02
[ 557 ]  
  		K.spdsafe: seventh draft of "Guidance on safety relating to the use of surge protective devices and surge protective components in telecommunication terminal equipment" aiming consent.     Nippon Telegraph and Telephone Corporation (NTT) (Japan)   Q2/5   2019-09-02
[ 447 ]  
(Rev.1)  		K.Sup.access_trunk_networks to-ITU-T-K.45 on "Rationale for setting resistibility requirements of telecommunication equipment installed in the access and trunk networks against lightning": 1st draft of Supplement     Nippon Telegraph and Telephone Corporation (NTT) (Japan)   Q2/5   2019-04-26
[ 446 ]  
(Rev.1)  		K.Sup.telecom_centre to-ITU-T-K.20 on "Rationale for setting resistibility requirements of telecommunication equipment installed in a telecommunication centre against lightning": 1st draft of Supplement     Nippon Telegraph and Telephone Corporation (NTT) (Japan)   Q2/5   2019-04-26
[ 445 ]  
(Rev.1)  		K.Sup.customer to-ITU-T-K.21 on "Rationale for setting resistibility requirements of telecommunication equipment installed in customer premises against lightning": 1st draft of Supplement     Nippon Telegraph and Telephone Corporation (NTT) (Japan)   Q2/5   2019-04-26
[ 444 ]  
  		K.spdsafe: fifth draft of "Guidance on safety relating to the use of surge protective devices and surge protective components in telecommunication terminal equipment"     Nippon Telegraph and Telephone Corporation (NTT) (Japan)   Q2/5   2019-04-26
[ 361 ]  
  		Proposed third draft of new Recommendation K.spdsafe "Guidance on safety relating to the use of surge protective devices and surge protective components in telecommunication terminal equipment"     Nippon Telegraph and Telephone Corporation (NTT) (Japan)   Q2/5   2018-08-28
[ 360 ]  
  		Comments on earthing conditions of power feeding systems in K.20, K.21 and K.44     Nippon Telegraph and Telephone Corporation (NTT) (Japan)   Q2/5   2018-08-28
Results:23 total items.
 
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