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ITU-T SG 5 Meeting – 1 – 12 to 16 April 2010

Report on the ITU-T Study Group 5 Meeting12 to 16 April 2010,Buenos Aires, Argentina

1 Introduction

The ITU-T SG 5 meeting was held in Buenos Aires, Argentina, from 12 to 16 April 2010. There were 100 delegates; five of which were from the US (mainly for WP3). About 50 delegates attended WP1 and WP2 meetings and the rest attended the WP3 (ICT and climate change) meetings.

Annex A provides details of the ITU Structure. Those not familiar with the SG 5 Working Party Question Groups should read Annex A in particular clause A.3 before reading the rest of this report. Published ITU-T SG 5 Recommendations can be downloaded for free from http://www.itu.int/ITU-T/recommendations/index_sg.aspx?sg=5

Annexes B through D list the meeting documents concerned with WP 1/5 Damage prevention and safety, WP 2/5 Electromagnetic fields: emission, immunity and human exposure and general SG5 documents. Annex E is the updated WP document programme from the meeting.

The next SG 5 meeting is projected to be 23 November-01 December 2010 Geneva. However, there are obvious conflicts for US-based members and talks are taking place to see if the dates can be changed.

2 Results of meeting

The plenary meeting consented on new Recommendation K.82 (Characteristics and ratings of solid-state, self restoring overcurrent protectors for the protection of telecommunications installations) as well as on revised Recommendations K.12 (Characteristics of gas discharge tubes for the protection of telecommunications installations) and L.19 (Multi-pair copper network cable supporting shared multiple services such as POTS, ISDN and xDSL).

3 Meeting Discussions

With fifteen groups meeting it wasn’t possible to monitor all the discussions. I have summarised the following material from the various group reports. The format is by Working Party, by Question and the discussion items

3.1 WP 1/5 Damage prevention and safety

3.1.1 Question 4/5 - Resistibility of communication equipment

The objective of this question is to produce resistibility requirements for equipment installed in telecommunications centres, in outdoor enclosures in the access and trunk networks and at customer premises.

3.1.1.1 Power contact tests

Mr. Mick Maytum presented some proposals (C108) to amend the power contact tests contained in the resistibility recommendations, and he informed that these proposals were previously endorsed by Mr. Phil Day. He also presented the situation of the power contact test in the IEC 62368-1 (TD403). During the discussions, it came out that these proposals need to be analysed in detail in order to assess its implications. This discussion shall continue, preferably through the ITU-T Forum, in order to achieve a consensus to the next meeting.

http://www.itu.int/ITU-T/recommendations/index_sg.aspx?sg=5


3.1.1.2 External Ethernet port

The Rapporteur submitted the documents TD388 and TD394 that are relevant to this subject but, due to his absence, they have not been discussed in detail. Mr. Mick Maytum presented a rationale for having an impulse insulation test on Ethernet ports, contained in TD109 (“Ethernet field experiences”). There was a lot of discussions after his presentation, but it was not possible to find an agreement on his proposal. The discussions shall continue, in order to achieve a consensus to the next meeting.

3.1.1.3 External coaxial cable port

The Rapporteur submitted a contribution (TD393) with a summary of the discussions on this subject, which is also covered in TD110. The contents of TD110 were presented by Mr. Paul Wiener. In the following discussions, Dr. Albert Martin pointed out the coaxial cable’s transfer impedance could be better represented. The acting-Rapporteur asked for a continuing discussion on this subject through the ITU Forum, so that the outcome of the discussions could be incorporated in the resistibility recommendations under revision.

3.1.1.4 Resistibility Guide

Mr. Sylvain Person presented the draft of the Resistibility Guide, contained in C141. The document was very well received by the delegates, as it clearly guides the user through the testing process according to the resistibility Recommendations. In the following, Mr. Yasuhiro Homma presented some proposals to improve the Resistibility Guide (TD399), which contains some interesting test diagrams. The acting-Rapporteur asked Mr. Person to consider TD399 in his work, and also to seek consent on the Resistibility Guide during the next meeting.

3.1.2 Question 5/5 – Lightning protection of telecommunication systems

The purpose of this Question is to produce new or revised Recommendations or Chapters of the Lightning Handbook regarding the protection of telecommunication systems against the dangerous effects of lightning discharges.

3.1.2.1 K.lp “Using data of lightning positioning systems for network protection”.

Mr. Ahmed Zeddam presented the experience of France Telecom (C101) with the use of data from the lightning positioning system for network protection. In the following, Mr. Ryuichi Kobayashi presented the experience of NTT (TD409) on this field. In the discussion that followed, it was agreed that K.lp should contain some general information and the experience of the operators (as contained in C101 and TD409) could stand as appendices in this Recommendation. Mr. Gerhard Ackermann pointed out that this new Recommendation should highlight the advantages that the use of lightning positioning data may bring to the operators. The Rapporteur asked Mr. Ackermann to provide contributions to K.lp. The Rapporteur also asked for an editor to K.lp, and Mr. Sylvain Person kindly accepted the job. A first draft is expected for the next meeting.

3.1.2.2 K.56 “Protection of radio base stations against lightning discharges”

Mr. Sangmu Lee presented the Contribution C130 (“Follow-up comment and consideration of power system configuration after the submitted opinions for K.56 AAP”). In the discussion that followed, the delegates tried to find a way to amend the Figures 8 and 9 of K.56 in order to avoid misinterpretation. It was agreed that the earthing symbol in these figures should be replaced by the functional equipotential bonding symbol contained in IEC 60617, which is a thick bar. Close to this bar there should be the phrase: “Electric board equipotential bonding bar”. The layout of Fig. 8 and 9 should also be adapted in order to look like the equivalent figures in IEC 61643. The Rapporteur is in charge to provide these amendments as soon as possible.


3.1.2.3 K.71 “Protection of customer antenna installations”.

The Rapporteur presented the document TD417, which contains an analysis of TD257 and IEC 60364-5-54, "Selection and erection of electrical equipment - Earthing arrangements, protective conductors and protective bonding conductors”. After the presentation, the delegates agreed to consider the French version of the standard (which is different from the English version) in the revision of K.71. It was also considered the proposal LS contained in TD420, which informs IEC TC-64 that it seems to have a translation problem in this document. After the discussion, it was agreed that the Rapporteur should send a direct communication to the IEC TC-64 chairman indicating this.

3.1.2.4 K.46 “Protection of telecommunication lines using metallic symmetric conductors against lightning induced surges”.

The draft of revised Recommendation K.46 (TD418) was presented by the Rapporteur, highlighting its software-friendly capabilities. Mr. Gerhard Ackermann pointed out that this Recommendation is going to be the only one dealing with network protection against lightning, as IEC TC-81 will no longer work on this issue and CENELEC is about to cancel its relevant standards on the subject. He also provided the Rapporteur with the outcome of a deep analysis on K.46 (version in force) carried out by the German NC, which shall be incorporated in the revision process. The Rapporteur asked the operators to provide contributions on this subject, and a stable draft is expected for the next meeting.

3.1.3 Question 6/5 - Bonding configurations and earthing of telecommunication systems in the global environment

The purpose of this question is to produce new recommendations and to revise the existing ones regarding the bonding configurations and earthing of electronic equipment inside telecommunication buildings and customer premises as well as remote electronic sites.

3.1.3.1 Earthing and bonding Handbook

Modifications accepted during the last SG5 meeting are published as Amendment 1 (can be found together with the Handbook at http://www.itu.int/publ/T-HDB-EMC.5-2003/en .

3.1.3.2 Suggestions for the modification of K.27 and K.35

The rapporteur has suggested to revise Recommendations K.27 and K.35.

3.1.4 Question 9/5 - Interference produced by power lines and electrified railway lines into telecommunications networks

This Question is aimed to study interference caused by power and traction systems to telecommunication systems, Earth Potential Rise (EPR) when the HV, MV and LV earthing systems are connected and transients occurring on LV supply networks as sources of interference to broadband technologies. This Question also should maintain and ensure good coordination between the nine volumes of the Directives and Recommendations related to the electromagnetic interference experienced by telecommunications networks due to power systems and electrified railway systems.

3.1.4.1 C124, “Induced voltage measured at one end of a conductor when the other end of that conductor is earthed closely to the high-speed electrified railway”.

This contribution was presented by Mr. Ho-Seok Oh and in the following there was some technical discussion about its contents. It was also considered how this contribution could be incorporated into the SG5 Recommendations or handbooks. The outcome of this discussion was that the information contained in this contribution could fit into the “Handbook on interference measuring techniques”.


The Rapporteur is asked to consider this proposal and to manage the best way to accomplish it, possibly with the help from Mr. Ho-Seok Oh.

3.1.5 Question 10/5 - Copper cables, networks and fibre-optic connection hardware for broadband access

The purpose of this Question is to prepare requirements and guidance for outside and indoor network elements related to broadband applications.

3.1.5.1 TD 395 Draft revised ITU-T Rec. L.19 "Multi-pair copper network cable supporting shared multiple services such as POTS, ISDN and xDSL"

This TD contains a revised text for L.19 “Multi-pair copper network cable supporting shared multiple services such as POTS, ISDN and xDSL(2003)”, based on the proposal revision text in COM 6-C 18 and TD 221 which was discussed on SG 6 meeting of previous study period. Also, this document is an updated text reflecting the related Recommendations revised recently in SG15 and some comments proposed at the previous SG6 meeting. After discussion, this document was agreed to submit for consent and TD 395rev1 with some editorial correction was prepared for consent.

3.1.5.2 TD 402 Contribution for Handbook on Metrics : question to Q10/5.

Q10/5 was requested to comment for TD 346 “Contributions for Handbook on Metrics” produced by Q20/5. The Q10/5 Rapporteurs sent the response by e-mail. This TD summarizes the status of this situation including e-mail contents. The Rapporteur announced this situation.

3.1.5.3 TD 376 ITU-D SG2, Request of information for standards related to Telecommunications outside Plants for Disaster Preparation and Mitigation.

This TD was an incoming LS from ITU-D. Unfortunately, SG5 has no related Recommendations or Handbooks. A reply LS was drafted to this effect (see TD 452).

3.1.5.4 Question 11/5 - Safety in the telecommunications networks

This Question will review existing K-series safety recommendations to ensure that they remain accurate and appropriate to the telecommunications industry and environment. It will ensure that changes in the environment or in technology (for example the introduction of new broadband systems) will produce an updated version to ensure that these documents remain current and valid and it will study new safety subject if needed.

3.1.5.5 TD413, “Summary of Q.11/5”.

The Summary of Q.11/5, contained in TD413, was presented and discussed.

3.1.5.6 C122, “Introduction of safety requirement for surge suppressors in audio/video, information and communication technology equipments”.

Mr. Han (Rep. of Korea) presented C122, regarding the safety requirements for surge suppressors in audio/video, information and communication technology equipments. In the following discussions, Mr. Mick Maytum suggested that it would be helpful to have a document comparing the IEC MOV requirements with those from ITU-T K.77, highlighting the differences and, when applicable, proposing changes. Mr. Han agreed in preparing this document for the next meeting.

Mr. Zeddam briefly described the work going on in IEC TC 81 / AHG 1, regarding safety due to lightning discharges, and he proposed to act as liaison to ITU-T SG-5 regarding this issue.


3.1.6 Question 13/5 - Protective components and assemblies

The objective of this Question is to establish Recommendations for specifications, test methods and principles of application for protective components and assemblies intended to mitigate effects of lightning, power induction, ESD, fast transients and power contacts that may cause permanent damage. These protective components and assemblies are related to both telecommunication and power supply circuits of telecommunication equipment.

3.1.6.1 K.12: Characteristics of GDT for the protection of telecommunications installations

The comments and proposed changes from the 10/2009-meeting were implemented. Recommendation K.12, see TD 389, is, with minor editorial amendments, identical to TD251rev1. After some discussions the draft was editorially amended, the revised version is TD 389rev. It was agreed to send to SG5 plenary for consent to start the approval procedure.

The following items under this project will be discussed at later date:

Additional tests within K.12 and K.44 to prevent GDT self-oscillating C 76

Additional values for GDT-specifications (coordination) C 47

Modelling GDT spark over C 46

3.1.6.2 K.65: Overvoltage and overcurrent requirements for termination modules with contacts for test ports or SPDs;

The discussion was postponed due to absence of the editor.

3.1.6.3 K.28: Characteristics of semi-conductor arrester assemblies

The first edition of K.28 that reformats the body text to use the clause order agreed for Q 13/5 documents was put onto the forum at 13thApril 2010.

3.1.6.4 K.ocp: Self-restoring overcurrent protectors;

Draft Recommendation K.ocp was given in TD 400 including all the changes decided at the October 2009 meeting of SG-5 and most of the comments from the forum. The ad hoc-group went through the open questions and proposals (coloured columns) and the observations were accepted by the commentator. After these discussions the draft was amended, the revised version is TD 400rev. It was agreed to send to SG5 plenary for consent to start the approval procedure.

3.1.6.5 K.appl: Self-restoring overcurrent protectors

The Rapporteur presented the situation for this project to WP1. The decisions made were:

to limit K.appl to selection and characteristics issues

to include the still necessary parts of K.36 into K.appl before deleting K.36 and

to start the creation of a handbook on the application of SPDs.

The work on K.spc and K.spd will be delayed until the above Recommendation actions are completed.


3.2 WP 2/5 Electromagnetic fields: emission, immunity and human exposure

3.2.1 Question 1/5 – EMC issues arising from the liberalization of telecommunications networks

Unbalance is an essential factor to be studied in this Question. Methodologies for measuring cable characteristics, such as unbalance, NEXT, or FEXT, are one of the issues to be clarified, in order to ensure the performance of the cable under the unbundling. This Question will also review the existing Recommendations on liberalization to ensure that they remain accurate and appropriate to the telecommunications industry and environment

3.2.1.1 agreements reached

It was agreed that the information contained in TD377 will be considered during the drafting of related recommendation under Question 1/5.

3.2.2 Question 2/5 – EMC related to broadband access networks

This Question should study the impact of spread spectrum techniques and other modulation techniques on the electromagnetic environment producing one or more recommendations, which will allow telecommunication network operators to minimize the risk of interference to the user of the radio spectrum from these new access systems. The validity of current immunity techniques (especially the need for broadband radiated and conducted tests) for these new systems should also be studied as well as the interference from the next generation access systems to existing or next generation telecommunication networks.

There was no discussion as there were no Contributions submitted to this Question.

3.2.3 Question 3/5 – Human exposure to electromagnetic fields (EMFs) due to radio systems and mobile equipment

This Question has to provide a high level framework for managing the human exposure to EMFs (regulatory practices) emitted by the telecommunication equipment and guidelines for the assessment of human exposure based on the existing standards and recommendations.

To achieve this goal, this question will address measuring techniques, procedures and numerical modeling for evaluating the electromagnetic field due to telecommunication systems and radio terminals.

3.2.3.1 TD381

This Liaison Statement sent by CITEL for information presented Broadband monitoring system for electromagnetic emissions. During the discussion it was pointed out that this document, together with former documents presented by Germany (C 18), Brazil (C 69) and Switzerland (C 39), could form the base for the new Recommendation K.monitor.

During the Q3/5 meeting the system implementation in Argentina and in Spain was presented and discussed. It was pointed out that this system includes a lot of very interesting features that have to be addressed in Recommendation K.monitor.

3.2.3.2 COM5-C 115

After discussion it was agreed to include this contribution concerning assessment of the exposure from the smart antennas in the next draft of Recommendation K.guide. This part will be in line with the text in the related IEC standards.

3.2.3.3 COM5-C 116

The current draft of new Recommendation K.guide has been presented and discussed. I has been pointed out that a lot of additional information is still needed. It has been agreed to


prepare the next draft as soon as possible including information from the documents sent for this meeting

During the WP2 meeting it has been agreed to change the title of draft new Recommendation K.guide to “Guide to the Management of Human Exposure to Electromagnetic Fields (EMFs)”

3.2.3.4 COM5-C 140

The information given in this contribution will be included in the new draft of Recommendation K.guide

It has been decided to give possibility for the shorter time averaging (1 min. instead of 6 min.) if the measured EMF level is 10 dB lower than the proper exposure limit.

The example of the comparison between results of the broadband and frequency selective measurement including uncertainty assessment should be presented in an Appendix to Recommendation K.guide.

3.2.4 Question 8/5 – Home Networks

The objective of this Question is to prepare guidelines for the management of EMC, resistibility and safety issues related to the home network. The outputs of this Question could be the base for test techniques and performance criteria under K-series Recommendations.

3.2.4.1 COM5-C118

This contribution presents EMC troubles caused by disturbance from AC power port to Ethernet port as well as experimental results of transparency rate from power port to telecom port.

This contribution is important to understand the necessity of test level and test port in K.im_bb. It was agreed to incorporate this document into K.im_bb as reference information.

3.2.4.2 TD410

This contribution is the 2nd draft of new Recommendation K.im_bb. Test conditions and performance criteria were added in the text.

It was found that more examinations regarding test port and level are needed in order to clarify the rationale of the test. Rapporteur asked all members to submit their results.

It is important to indicate the specification of test generator. The Rapporteur will check the activity and progress in CISPR. Moreover, CISPR publication 16-series, describing specifications of test equipment, will also be checked.

The used terminology and definitions need to be clarified to take into account the scope of this Recommendation.

3.2.5 Question 12/5 – EMC telecommunications recommendations

The objective of this Question is to provide new Recommendations and review existing K-series EMC recommendations to ensure that they remain accurate and appropriate regarding the changes in the environment or in telecommunications technology (for example the introduction of new radio systems).


3.2.5.1 COM 5 – C 104

The document, “The impact of voltage ramp on DC powered telecommunication equipment start-up” reports a possible problem present in installations especially for radio base station. Due to the characteristics of start-up, AC/DC rectifier gives as output on DC a ramp voltage from 0 to the nominal voltage with duration of 1 to 15 sec. The phenomenon can cause fault on telecom equipment. The contribution suggests a new EMC test to be included in K.48 or in a new Recommendation.

During the discussion it was decided to invite ZTE Corporation to provide more data on the phenomena and on the characteristics of rectifier to make it possible to select only one value for the ramp duration.

Also other Q12/5 participants are invited to investigate this phenomenon to obtain a more populated database of existing rectifier characteristics.

3.2.5.2 TD 377

This Liaison Statement from SG12 is the answer to our liaison on K.NGN (TD329)

SG12 made some comment on the performance criteria proposed for K.NGN and suggested us to refer to IETF benchmarks described in RFC 1242 and RFC 2544 for the performance criteria.

It was noted that good suggestions are reported in the document. The suggestions will be considered by the editor of K.NGN in the preparation of the next draft.

3.2.6 Question 15/5 – Security of telecommunication and information systems regarding the electromagnetic environment

The purpose of this Question is to develop guidelines to protect key telecommunications centres from disruption due to electromagnetic effects. This work includes protection from lightning damage, from Electromagnetic Compatibility (EMC) issues and also the effects of High-Altitude Electromagnetic Pulse (HEMP) and High Power Electromagnetic (HPEM) attack.

3.2.6.1 TD397

The scope and references were revised compared to the draft submitted in February 2008. It was agreed to modify the use of abbreviation in the title and to put newest titles for references. The members are requested to submit comments for further modifications till the next meeting.

3.2.7 Question 16/5 – EMC requirements for the Information Society

The purpose of this Question is to study methodologies for predicting and mitigating EMC problems created by the emergence of the Information Society using a variety of both wireless and wireline technologies.

3.2.7.1 Summary of discussions

As agreed during the last meeting, the proposed new Recommendation K.ant was deleted from the work programme of Q16/5, the subject is under the responsibility of ITU-R.

Before replying to these LSs, technical discussions between ITU-R and ITU-T are necessary as the received LSs do not specify the technical points clearly enough.

It was agreed that since the K.deg has been discussed in SG5 for more than 2 years, it is beneficial to continue this work. Draft Recommendation K.deg shall be revised to clarify the


difference from the ITU-R study area and to focus on the EMC area in the next version. After clarification through technical discussion with ITU-R, SG5 will make the changes accordingly.

The Rapporteur will prepare a summary on the output of the discussions with ITU-R for the next meeting.


Annex A ITU-T Study Group 5 - Environment and climate change

Study Group Structure - Study Period (2009-2012)

A.1 ITU

A United Nations agency for information and communication technology issues, and the global focal point for governments and the private sector in developing networks and services.

A.1.1 ITU SectorsITU-R — The ITU Radiocommunication Sector plays a vital role in the global management of

the radio-frequency spectrum and satellite orbits

ITU-D — The ITU Telecommunication Development Sector (ITU-D) aims at achieving the Sector's objectives based on the right to communicate of all inhabitants of the planet through access to infrastructure and information and communication services.

ITU-T — The ITU Telecommunication Standardization Sector creates infocommunications standards (ITU-T Recommendations). The ITU-T has ten study groups for different topics.

A.2 ITU-T Study and Advisory Groups

A.2.1 Telecommunication Standardization Advisory Group

TSAG reviews priorities, programmes, operations, financial matters and strategies for the Sector, follows up on the accomplishment of the work programme, restructures and establishes ITU-T Study Groups, provides guidelines to the Study Groups, advises the Director of TSB, elaborates A-series Recommendations on organization and working procedures.

A.2.2 Study Group 2: Operational aspects of service provision and telecommunications management

Lead study group for service definition, numbering and routing

Lead study group on telecommunication for disaster relief/early warning

Lead study group on telecommunication management

A.2.3 Study Group 3 Tariff and accounting principles including related telecommunication economic and policy issues

Responsible, among others, for studies relating to tariff and accounting matters (including costing methodologies) for international telecommunication services and study of related telecommunication economic, accounting and policy issues. To this end, Study Group 3 shall

in particular foster collaboration among its members with a view to the establishment of rates at levels as low as possible consistent with an efficient service and taking into account the necessity for maintaining independent financial administration of telecommunication on a sound basis.

A.2.4 Study Group 5 Environment and climate change Lead study group on electromagnetic compatibility and electromagnetic effects

Lead Study Group on ICTs and climate change

A.2.5 Study Group 9 Television and sound transmission and integrated broadband cable networks

Lead study group on integrated broadband cable and television networks voice or other time-critical services, video on demand, interactive services, etc.


A.2.6 Study Group 11 Signalling requirements, protocols and test specifications Lead study group on signalling and protocols

Lead study group on intelligent networks

Lead study group on test specifications

A.2.7 Study Group 12 Performance, QoS and QoE Lead study group on quality of service and quality of experience

A.2.8 Study Group 13 Future networks including mobile and NGN Lead study group for future networks and NGN

Lead study group on mobility management and fixed-mobile convergence

A.2.9 Study Group 15 Optical transport networks and access network infrastructures Lead study group on access network transport

Lead study group on optical technology

Lead study group on optical transport networks

A.2.10 Study Group 16 Multimedia coding, systems and applications Lead study group on multimedia coding, systems and applications

Lead study group on ubiquitous applications ("e-everything", such as e-health)

Lead study group on telecommunication/ICT accessibility for persons with disabilities

A.2.11 Study Group 17 Security Lead study group on telecommunication security

Lead study group on identity management (IdM)

Lead study group on languages and description techniques

A.3 ITU-T Study Group 5 Working Parties and Question Groups

A.3.1 Working Party 1 (Damage prevention and safety) Questions and related Recommendations

A.3.1.1 Question 4/5 – Resistibility of communication equipment

Recommendations K.20, K.21, K.44, K.45

A.3.1.2 Question 5/5 – Lightning protection of telecommunication systems

Recommendations K.25, K.29, K.39, K.40, K.46, K.47, K.56, K.67, K.71, K.72 and Lightning Handbook

A.3.1.3 Question 6/5 – Bonding configurations and earthing of telecommunication systems in the global environment

Recommendations K.27, K.35, K.66, K.73 and “Earthing and Bonding Handbook”

A.3.1.4 Question 9/5 – Interference to telecommunication networks due to power systems and electrified railway systems

Recommendations K.5, K.6, K.7, K.8, K.9, K.13, K14, K.19, K.26, (K.54, K.57,) K.68, and the Directives, except Volume VIII

A.3.1.5 Q 10/5 – Outside and indoor network elements for broadband applications

Recommendations L.9, L.18, L.19, L.71, L.75, L.76


A.3.1.6 Q 11/5 – Safety in the telecommunications networks

Recommendations K.50, K.51, K.64 and K.75

A.3.1.7 Q 13/5 – Protective components and assemblies

Recommendations K.11, K.12, K.28, K.30, K.36, K.55, K.65 and K.69

A.3.2 Working Party 2 (Electromagnetic fields: emission, immunity and human exposure) Questions and related Recommendations

A.3.2.1 Q 1/5 – EMC issues arising from the liberalization of telecommunications networks

Recommendations K.10, K.58, K.59 and L.62

A.3.2.2 Q 2/5 – EMC related to broadband access networks

Recommendations K.60

A.3.2.3 Q 3/5 – Human exposure to electromagnetic fields (EMFs) due to radio systems and mobile equipment.

Recommendations K.52, K.61 and K.70

A.3.2.4 Q 8/5 – Home Networks

Recommendations K.74.

A.3.2.5 Q 12/5 – EMC telecommunications recommendations

Recommendations K.18, K.23, K.24, K.34, K.37, K.38, K.42, K.43, K.48, K.49, K.62, K.63 and K.76

A.3.2.6 Q 15/5 – Security of telecommunication and information systems regarding the electromagnetic environment

Recommendations None

A.3.2.7 Q 16/5 – EMC requirements for the Information Society

Recommendations None


Annex B WP 1/5 Damage prevention and safety

Meeting Documents

B.1 Pre-meeting Contributions

Number Source Title Questions 108 IEEE Recommendations K.20, K.21 and K.45 - Power

Contact Test Proposals Q4/5

109 IEEE Ethernet Field experiences Q4/5 110 Bourns External coaxial cable port test proposal Q4/5 141 France Telecom

Orange , Technicolor

Resistibility Guide Q4/5

101 France Telecom Orange

Using data of lightning positioning system for network protection, recovery services or diagnosis by hotline services

Q5/5

130 Korea (Republic of) Follow-up comment and consideration of power system configuration after the submitted opinions for K.56 AAP

Q5/5

124 Korea (Republic of) Induced voltage measured at one end of a conductor when the other end of that conductor is earthed closely to the high-speed electrified railway

Q9/5

122 Korea (Republic of) Introduction of safety requirement for surge suppressors in audio/video, information and communication technology equipments

Q11/5

B.2 Meeting Contributions

Number-GEN

Source Title Questions

373 Chairman WP1/5

Draft Agenda for Working Party 1/5 Q13/5, Q11/5, Q10/5, Q9/5, Q6/5, Q5/5, Q4/5

376 ITU-D SG2 Incoming LS: Standards related to Telcommunications outside Plants for Disaster Preparation and Mitigation

Q10/5

381 CITEL Incoming LS: Broadband monitoring system for electromagnetic systems

Q3/5

388 Rapporteur Q4/5

Internal port test proposals Q4/5

389 Rapporteur Q13/5

Revision of Recommendation K.12 Q13/5

393 Rapporteur Q4/5

External coaxial cable port test proposal Q4/5

394 Rapporteur Q4/5

Requirements for testing short external symmetric pair ports

Q4/5


Draft revised ITU-T Rec. L.19 "Multi-pair copper network cable supporting shared multiple services such as POTS, ISDN and xDSL"

Q10/5

398 Rapporteur Q3/5

Progress report on Question 3/5 Q3/5

399 Rapporteur Q8/5

Proposal to improve Resistibility Guide Q4/5


Revised draft Recommendation K.ocp Q13/5


Update on North American wiring simulators Q4/5


Q 13/5 : Progress report and agenda for the ad-hoc meeting 04/2010

Q13/5


405 Rapporteur Q3/5

Agenda: Question 3/5 Q3/5

411 Chairman WP1/5

Summary of HNSG work Q13/5, Q11/5, Q10/5, Q8/5, Q6/5, Q5/5, Q4/5

412 Rapporteur Q4/5

Summary for Question 4/5 Q4/5


Question 11/5 Summary Q11/5


Question 10/5 agenda Q10/5

416 Rapporteur Q5/5

Agenda for Question 5/5 Q5/5

417 Rapporteur Q5/5

Analysis of TD 257 Q5/5

418 Rapporteur Q5/5

Revision of Recommendation K.46 "Protection of telecommunication lines using metallic symmetric conductors against lightning induced surges"

Q5/5

419 Rapporteur Q5/5

Progress report for Question 5/5 Q5/5

420 Rapporteur Q5/5

Reply LS on "Bond conductor for Recommendation K.71"

Q5/5

424 Rapporteur Q6/5

Status of Question 6/5 Q6/5

428 Acting Rapporteur Q11/5

Report of Question 11/5 Q11/5



437 Rapporteur Q3/5




444 Rapporteur Q5/5





Liaison on the outcome of a new Recommendation on overcurrent protectors

Q13/5


Reply to ITU-D SG2 on Standards related to Telecommunication Outside Plant for Disaster Preparation and Mitigation

Q10/5

459 Acting Chairman WP1/5

Report of Working Party 1/5 Q9/5, Q6/5, Q5/5, Q4/5, Q13/5, Q11/5, Q10/5


Annex C WP 2/5 Electromagnetic fields: emission, immunity and human exposure

Meeting Documents

C.1 Pre-meeting Contributions

Number Source Title Questions 115 China Mobile

Communications Corporation

Additional supplement of smart antennas calculation for K.guide

Q3/5

116 Telekomunikacja Polska Working document toward draft new Recommendation K.guide

Q3/5

140 ANATEL Some remarks regarding K.guide Q3/5 118 NTT Electromagnetic disturbance waves enter

Ethernet ports in customer telecommunication equipment

Q8/5

104 ZTE Corporation The impact of voltage ramp on DC powered telecommunication equipment start-up

Q12/5

C.2 Meeting Contributions

Number-GEN


374 Chairman WP2/5

Draft Agenda for Working Party 2/5 Q16/5, Q15/5, Q12/5, Q8/5, Q3/5, Q2/5, Q1/5

377 ITU-T SG12 Incoming LS: Reply to LS on on QoS evaluation for NGN equipment during EMC test

Q12/5, Q1/5

379 ITU-R WP5A Incoming LS: Proposal for new K-series Recommendations

Q16/5

380 ITU-R SG5 Incoming LS: Proposals for new K-series Recommendations

Q16/5

381 CITEL Incoming LS: Broadband monitoring system for electromagnetic systems

Q3/5

391 ITU-R WP5D Incoming LS: Draft ITU-T Recommendation K.deg: "Mutual-disturbance test requirements for performance degradation evaluation of converged terminal devices"

Q16/5

392 ITU-R WP5D Incoming LS: Isolation between co-located antennas of systems in the land mobile service including IMT

Q16/5

397 Rapporteurs Q15/5

Draft text of ITU-T Recommendation K.leakage "Test method and requirements against information leak through unintentional EM emission"

Q15/5

398 Rapporteur Q3/5

Progress report on Question 3/5 Q3/5

405 Rapporteur Q3/5

Agenda: Question 3/5 Q3/5

409 Rapporteur Q8/5

Usage of lightning position detection data for preventing damage to telecommunication installation

Q8/5

410 Rapporteur Q8/5

Revised Draft Recommendation K.im_bb - "Immunity to Broadband disturbance for home network device"

Q8/5



436 Rapporteurs Q8/5

Progress on Question 8/5 Q8/5

437 Rapporteur Report of Question 3/5 Q3/5


Q3/5439 Acting

Rapporteur Q12/5


460 Chairman WP2/5

Report of Working Party 2/5 Q16/5, Q15/5, Q12/5, Q8/5, Q3/5, Q2/5, Q1/5


Annex D QALL/5

Meeting Documents

D.1 Meeting Announcement

Number Source Title Destination4 SG 5 Meeting of Study Group 5, Buenos Aires, Argentina, 12-16 April

2010SG

D.2 Meeting Contributions

Number-GEN


372 Chairman SG5 Draft agenda and timetable for Study Group 5 meeting QALL/5 378 ITU-T SG2 Incoming LS: Continuation of Joint Coordination Activity

on Management (JCA-Mgt)QALL/5

382 ITU-T SG13 Incoming LS: Summary of further activity on ad hoc groups (by Res. 2 and 56 WTSA-08)

QALL/5

383 TSB Invitation to contribute to CWG-WCIT12 QALL/5 385 TSAG Incoming LS: Liaison statement to all ITU-T study groups

on actions required to improve quality of ITU-T Recommendations

QALL/5

386 TSAG Incoming LS: TSAG Correspondence Group on Working Methods, including Electronic Working Methods

QALL/5

387 TSAG Incoming LS: Appropriate usage of document types in SG and WP meetings

QALL/5

396 ISO/IEC JTC 1/WG 7

Incoming LS: Establishment of JTC 1 Working Group 7 on Sensor Networks

QALL/5

422 Chairman SG5 Chairman's Introductory presentation QALL/5 423 TSB List of Participants QALL/5 425 Vice-Chairman

Study Group 5Argentina's Presentation at the Opening Plenary QALL/5

453 Chairman WP2/5 Information on proposed new Question in ITU-T SG9 QALL/5

D.3 Post-Meeting Documents

Number Source Title Questions5 SG 9 Report of the meeting of Study Group 5 (Buenos Aires, 12-16 April

2010)QALL/5


Annex E Study Group 5 WP programme for 2009-2012

E.1 WP 1/5 Damage prevention and safety

Acronym Q Version Timing Subject

K.20 4 Rev. 2011 Resistibility of telecommunication equipment installed in a telecommunications centre to overvoltages and overcurrents

K.21 4 Rev. 2011 Resistibility of telecommunication equipment installed in customer premises to overvoltages and overcurrents

K.44 4 Rev. 2011Resistibility tests for telecommunication equipment exposed to overvoltages and overcurrents - Basic Recommendation

K.45 4 Rev. 2011Resistibility of telecommunication equipment installed in the access and trunk networks to overvoltages and overcurrents

ResistibilityGuide 4 New 2010 Guide to the use of the resistibility recommendations

K.20, K.21, K.44 and K.45

Handbookon lightning 5 New 2010 Protection of telecommunication lines and equipment

against lightning discharges

K.25 5 Rev.(Del.) 2011 Protection of optical fibre cables (To be incorporated

into revised K.47 and deleted after its approval)

K.29 5 Rev. 2012 Coordinated protection schemes for telecommunication cables below ground

K.39 5 Rev.(Del.) 2012

Risk assessment of damages to telecommunication sites due to lightning discharges (To be deleted with the approval of K.40)

K.40 5 Rev. 2012 Protection against LEMP in telecommunication centres

K.46 5 Rev. 2010 Protection of telecommunication lines using metallic symmetric conductors against lightning induced surges

K.47 5 Rev. 2011 Protection of telecommunication lines using metallic conductors against direct lightning discharges

K.67 5 Rev. 2012 Expected surges on telecommunications and signalling networks due to lightning

K.71 5 Rev. 2010 Protection of customer antenna installations

K.72 5 Rev. 2011 Protection of telecommunication lines using metallic conductors against lightning: risk management

K.lp 5 New 2012 Using data of lightning positioning system for network protection

K.ntt 5 New 2012 Protection of neighborhood of telecommunication towers against lightning

Earthingand BondingHandbook

6 Rev. 2009 Revision of the Earthing and bonding Handbook approved in 2003



K.27 6 Rev. 2010 Bonding configurations and earthing inside a telecommunication building

K.35 6 Rev. 2011 Bonding configurations and earthing at remote electronic sites

K.66 6 Rev. 2011 Protection of customer’s premises from overvoltages

Directives Volume V 9 Rev. 2011 Inducing currents and voltages in power transmission

and distribution systems

K.hvps 9 New 2010 Protection of telecommunications installations in High Voltage Power Stations

K.int 9 New 2011 Limits of interference on telecommunication transmissions on copper other than speech

L.19 10 Rev. 2010 Multi-pair copper network cable supporting shared multiple services such as POTS, ISDN and xDSL

L.75 10 Rev. 2011 Test, acceptance and maintenance methods of copper subscriber pairs, indoor network and structured cabling

L.76 10 Rev. 2012Developing the copper loop requirements, including indoor and structured cabling, for various access technologies

K.bb_test 10 New 2011Test procedures and specifications for broadband network elements such as connection hardware, cables, wires and other elements

K.50 11 Rev. 2012 Safe limits of operating voltages and currents for telecommunication systems powered over the network.

K.64 11 Rev. 2010 Safe working practices for outside equipment installed in particular environments

K.75 11 rev 2011Classification of interface for application of standards on resistibility and safety of telecommunication equipment

K.injury 11 New 2011

Reduction of risk of injury to people (telecom personnel and user of the telecom network) due to overvoltages and overcurrents on telecommunication lines due to lightning.

K.mag 11 New 2011Evaluation techniques and working procedures for compliance with limits to power-frequency magnetic field exposure of network operator personnel.

DirectivesVolume VIII 13 Rev. 2012 Possible revision of this Volume

K.12 13 Rev. 2010 Characteristics of gas discharge tubes (GDT) for the protection of telecommunications installations

K.28 13 Rev. 2010 Characteristics of semiconductor arrester assemblies for the protection of telecommunications installations

K.30 13 Del. 2010 Self restoring overcurrent protectors.Deletion after approval of K.opc

K.36 13 Rev. 2011 Selection of protective devices; deletion/revision of this



rec. when K.appl has consent

K.6513 Rev. 2010 Overvoltage and overcurrent requirements for

termination modules with contacts for test ports of SPDs

K.appl 13 New 2010 Application of Surge Protective Devices

K.ocp (K.82) 13 New AAP(05-

2010)

Solid-state, self-restoring overcurrent protector requirements for the protection of telecommunications installations

K.spc 13 New 2012 Basic requirements for Surge Protective components

K.spd 13 New 2012 Basic requirements for Surge Protective Devices

HB.appl 13 New 2012 Handbook on Application of Surge Protective Devices

E.2 WP 2/5 Electromagnetic fields: emission, immunity and human exposure


K.10 1 Rev. 2012 Low frequency interference due to unbalance about earth of telecommunication equipment

K.58 1 Rev. 2012EMC, Resistibility and Safety requirements and guidance for determining responsibility under co-located telecommunication installations

K.59 1 Rev. 2012 EMC, Resistibility and Safety requirements in unbundled telecommunication cable

K.lcl 1 New 2010 Method for measuring Longitudinal Conversion Loss (9kHz - 30MHz)

L.62 1 Rev. 2012 Practical aspects of unbundling services by multiple operators in copper access networks

K.mit 2 New 2010 Mitigation methodology for next generation access systems

K.pred 2 New 2011 Prediction method for emission from broadband signals transmitting in a cable

K.eun2 New 2009

Evaluation methodology for radiated emissions from plural broadband access systems under unbundled condition and Guidance for solving radio interference.

K.52 3

Maintenance No

action

needed

Guidance on complying with limits for human exposure to electromagnetic fields

K.61 3

Maintenance No action

needed

Guidance to measurement and numerical prediction of electromagnetic fields for compliance with human exposure limits for telecommunication installation

K.70 3 Maintenance No Mitigation techniques to limit human exposure to



action needed

EMF’s in the vicinity of radiocommunication stations

K.guide 3 New 2010 Guide to the management of human exposure to electromagnetic fields (EMFs)

K.monitor 3 New 2011 Monitoring of the EMF levels

K.74 8 Rev. 2012 EMC, Resistibility and Safety requirements and procedures for Home networks

K.im_bb(transferredfrom Q.2/5)

8 New 2010 Immunity to BB disturbances for home network device

K.henv 8 New 2010 Conducted and radiated electromagnetic environment in home networking

K.18 12 Rev. 2012 Calculation of voltage induced into telecommunication lines from radio station broadcasts and methods of reducing interference

K.34 12 Rev. 2010 Classification of electromagnetic environmental conditions for telecommunication equipment.

K.48 12 Rev. 2011 EMC requirements for telecommunication equipment – Product family Recommendation

K.48 Appendix 12 New 2010

Elevated Radio Frequency (RF) Radiated Immunity Levels for Telecommunications Network Equipment to Protect Against Interference due to nearby use of Mobile Telecommunications Terminals

K.76 12 Rev. 2011 EMC requirements for telecommunication network equipment (9 kHz-150 kHz)

K.NGN 12 New 2010 EMC requirements for Next Generation Network equipment

K.leakage 15 New 2010 Test method and requirements against information leak through unintentional EM emission

K.sec 15 New 2010 Guide for the application of security requirements.- Basic Recommendation

K.secmiti 15 New 2011 Mitigation methods against EM security threats

K.deg 16 New 2011 Mutual-disturbance Test Requirements for Performance Degradation Evaluation of Converged Terminal Devices