Building intercom system - Part 1-2: System requirements - Building intercom systems using the internet protocol (IP)

This part of IEC 62820 specifies the technical requirements for the composition, functions,
performance and test methods of building intercom systems using the internet protocol (IP), and
it is a supplement to IEC 62820-1-1.
This document is applicable to the IP building intercom systems for both residential and
commercial buildings.
NOTE A BIS that has a mixture of IP and non-IP connections is not covered by IEC 62820-1-2 but covered by
IEC 62820-1-1.

Gebäude-Sprechanlagen - Teil 1-2: Systemanforderungen - Sprechanlagen auf der Basis des Internet Protokolls (IP)

Systèmes d'interphone de bâtiment - Partie 1-2: Exigences du système - Systèmes d'interphone de bâtiment utilisant le protocole internet (IP)

L'IEC 62820-1-2:2017 spécifie les exigences techniques relatives à la composition, aux fonctions, aux performances, et aux méthodes d'essais des systèmes d'interphone de bâtiment utilisant le protocole internet (IP) et complète l'IEC 62820-1-1. Le présent document s'applique aux systèmes d'interphone de bâtiment IP pour les bâtiments résidentiels comme pour les bâtiments commerciaux.

Notranja komunikacija v stavbah - 1-2. del: Sistemske zahteve - Sistemi notranjih komunikacij v stavbah z IP protokolom

Ta del standarda IEC 62820 določa tehnične zahteve za sestavo, funkcije, zmogljivost in preskusne metode sistemov notranjih komunikacij v stavbah z internetnim protokolom (IP) ter dopolnjuje IEC 62820-1-1.
Ta dokument se uporablja za sisteme notranjih komunikacij v stavbah z IP-protokolom za stanovanjske in javne stavbe.
OPOMBA: Sistemi notranjih komunikacij v stavbah s kombinacijo povezav IP in povezav, ki niso IP, niso predmet standarda IEC 62820-1-2, temveč standarda IEC 62820-1-1.

General Information

Status
Published
Publication Date
19-Nov-2017
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
10-Nov-2017
Due Date
15-Jan-2018
Completion Date
20-Nov-2017

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Notranja komunikacija v stavbah - 1-2. del: Sistemske zahteve - Sistemi notranjih komunikacij v stavbah z IP protokolomBuilding intercom system - Part 1-2: System requirements - Building intercom systems using the internet protocol (IP)97.120Avtomatske krmilne naprave za domAutomatic controls for household use35.240.67Uporabniške rešitve IT v gradbeništvuIT applications in building and construction industryICS:Ta slovenski standard je istoveten z:EN 62820-1-2:2017SIST EN 62820-1-2:2017en01-december-2017SIST EN 62820-1-2:2017SLOVENSKI

STANDARD
SIST EN 62820-1-2:2017
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 62820-1-2
October 2017 ICS 13.320
English Version

Building intercom system - Part 1-2: System requirements - Building intercom systems using the internet protocol (IP) (IEC 62820-1-2:2017)

Systèmes d'interphone de bâtiment - Partie 1-2: Exigences du système - Systèmes d'interphone de bâtiment utilisant le protocole internet (IP) (IEC 62820-1-2:2017)

Gebäude-Sprechanlagen - Teil 1-2: Systemanforderungen -

IP-Sprechanlagen (IEC 62820-1-2:2017) This European Standard was approved by CENELEC on 2017-08-30. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization

Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17,

B-1000 Brussels © 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 62820-1-2:2017 E SIST EN 62820-1-2:2017

EN 62820-1-2:2017 2 European foreword The text of document 79/577/FDIS, future edition 1 of IEC 62820-1-2, prepared by IEC/TC 79 "Alarm and electronic security systems" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 62820-1-2:2017.

The following dates are fixed: • latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2018-05-30 • latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2020-08-30

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice The text of the International Standard IEC 62820-1-2:2017 was approved by CENELEC as a European Standard without any modification. SIST EN 62820-1-2:2017

EN 62820-1-2:2017 3
Annex ZA (normative)

Normative references to international publications with their corresponding European publications

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu.

Publication Year Title EN/HD Year IEC 62820-1-1 2016

Building intercom systems - Part 1-1: System requirements - General EN 62820-1-1 2016

ITU-T P.501 -
Test signals for use in telephonometry - -
SIST EN 62820-1-2:2017
SIST EN 62820-1-2:2017

IEC 62820-1-2 Edition 1.0 2017-07 INTERNATIONAL STANDARD NORME INTERNATIONALE Building intercom systems –

Part 1-2: System requirements – Building intercom systems using the internet protocol (IP)

Systèmes d'interphone de bâtiment –

Partie 1-2: Exigences du système – Systèmes d'interphone de bâtiment utilisant le protocole internet (IP)

INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE

ICS 13.320
ISBN 978-2-8322-4548-4
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale ®

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé. SIST EN 62820-1-2:2017

– 2 – IEC 62820-1-2:2017 © IEC 2017 CONTENTS FOREWORD ........................................................................................................................... 4 INTRODUCTION ..................................................................................................................... 6 1 Scope .............................................................................................................................. 7 2 Normative references ...................................................................................................... 7 3 Terms, definitions and abbreviated terms ........................................................................ 7 3.1 Terms and definitions .............................................................................................. 7 3.2 Abbreviated terms ................................................................................................... 8 4 Functional requirements .................................................................................................. 9 4.1 Basic functional requirements ................................................................................. 9 4.2 Additional functional requirements .......................................................................... 9 4.3 IP building intercom systems with SMU ................................................................... 9 5 Performance requirements............................................................................................. 10 5.1 General ................................................................................................................. 10 5.2 Audio characteristics ............................................................................................. 10 5.2.1 Audio delay ................................................................................................... 10 5.2.2 Echo return loss ............................................................................................ 10 5.2.3 Audio switching time ...................................................................................... 10 5.3 Video characteristics ............................................................................................. 10 5.3.1 General ......................................................................................................... 10 5.3.2 Image resolution ............................................................................................ 10 5.3.3 Frame rate ..................................................................................................... 11 5.3.4 Video delay ................................................................................................... 11 5.3.5 Lip sync ......................................................................................................... 11 5.3.6 Image quality ................................................................................................. 11 5.4 Network and information security .......................................................................... 11 5.4.1 Network access control .................................................................................. 11 5.4.2 Data integrity protection ................................................................................. 11 6 Test methods ................................................................................................................. 11 6.1 Test conditions ..................................................................................................... 11 6.1.1 Environmental conditions ............................................................................... 11 6.1.2 Electrical connection ...................................................................................... 11 6.2 Function test ......................................................................................................... 11 6.3 Test of audio characteristics ................................................................................. 12 6.3.1 Test requirements .......................................................................................... 12 6.3.2 Test of audio delay ........................................................................................ 12 6.3.3 Test of echo return loss ................................................................................. 13 6.3.4 Test of audio switching time........................................................................... 14 6.4 Test of video characteristics ................................................................................. 15 6.4.1 General conditions ......................................................................................... 15 6.4.2 Test conditions .............................................................................................. 15 6.4.3 Image resolution test ..................................................................................... 16 6.4.4 Frame rate test .............................................................................................. 16 6.4.5 Video delay test ............................................................................................. 16 6.4.6 Lip sync test .................................................................................................. 16 6.4.7 Subjective image quality assessment ............................................................. 17 6.5 Network security test ............................................................................................ 17 SIST EN 62820-1-2:2017

IEC 62820-1-2:2017 © IEC 2017 – 3 –

6.5.1 Network test system ...................................................................................... 17 6.5.2 Network access control test ........................................................................... 17 6.5.3 Data integrity protection test .......................................................................... 17 7 Documentation .............................................................................................................. 17 Annex A (normative)

Subjective assessment of the IP BIS image quality ............................ 18 A.1 Test setup ............................................................................................................. 18 A.2 Regulation for experimental actions ...................................................................... 18 A.3 Evaluation scoring ................................................................................................ 19 Annex B (normative)

Subjective assessment of echo return loss ........................................ 20 B.1 Test setup ............................................................................................................. 20 B.2 Evaluation scoring ................................................................................................ 20 Bibliography .......................................................................................................................... 21

Figure 1 – Test configuration of echo return loss

and audio switching time diagram ........... 12 Figure 2 – Four groups of CSS signals .................................................................................. 13 Figure 3 – Test signal A ........................................................................................................ 14 Figure 4 – Test signal B ........................................................................................................ 14 Figure 5 – Audio switching time test process ........................................................................ 15 Figure 6 – Lip sync test signal .............................................................................................. 17 Figure 7 – Test method diagram ........................................................................................... 17 Figure A.1 – Test setup diagram ........................................................................................... 18

Table A.1 – Image quality 5-point evaluation form ................................................................. 19 Table B.1 – Subjective echo return loss evaluation form ....................................................... 20

SIST EN 62820-1-2:2017

– 4 – IEC 62820-1-2:2017 © IEC 2017 INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________

BUILDING INTERCOM SYSTEMS –
Part 1-2: System requirements –
Building intercom systems using the internet protocol (IP)

FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 62820-1-2 has been prepared by IEC technical committee 79: Alarm and electronic security systems. The text of this International Standard is based on the following documents: FDIS Report on voting 79/577/FDIS 79/589/RVD

Full information on the voting for the approval of this International Standard can be found in the report on voting indicated in the above table. This document has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts in the IEC 62820 series, published under the general title Building intercom systems, can be found on the IEC website. SIST EN 62820-1-2:2017

IEC 62820-1-2:2017 © IEC 2017 – 5 –

The committee has decided that the contents of this document will remain unchanged until the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to the specific document. At this date, the document will be

• reconfirmed, • withdrawn, • replaced by a revised edition, or • amended.
SIST EN 62820-1-2:2017

– 6 – IEC 62820-1-2:2017 © IEC 2017 INTRODUCTION The IEC 62820 series of standards set out the technical requirements for the composition, functions, performance, and test methods of building intercom systems for building entry and application guidelines and consist of five parts: Part 1-1: System requirements – General; Part 1-2:

System requirements – Building intercom systems using the internet protocol (IP); Part 2:

Requirements for advanced security building intercom systems; Part 3-1:
Application guidelines – General; Part 3-2:
Application guidelines – Advanced security building intercom systems.
SIST EN 62820-1-2:2017
IEC 62820-1-2:2017 © IEC 2017 – 7 –
BUILDING INTERCOM SYSTEMS –
Part 1-2: System requirements –
Building intercom systems using the internet protocol (IP)

1 Scope This part of IEC 62820 specifies the technical requirements for the composition, functions, performance and test methods of building intercom systems using the internet protocol (IP), and it is a supplement to IEC 62820-1-1. This document is applicable to the IP building intercom systems for both residential and commercial buildings. NOTE A BIS that has a mixture of IP and non-IP connections is not covered by IEC 62820-1-2 but covered by IEC 62820-1-1. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 62820-1-1:2016, Building intercom systems – Part 1-1: System requirements – General ITU-T P.501, Test signals for use in telephonometry 3 Terms, definitions and abbreviated terms 3.1 Terms and definitions For the purposes of this document, the definitions given in IEC 62820-1-1 and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: • IEC Electropedia: available at http://www.electropedia.org/ • ISO Online browsing platform: available at http://www.iso.org/obp 3.1.1

audio delay audio latency one way delay (OWD) time of the transmitted audio signal from the microphone of one intercom unit through other components in the system to the loudspeaker of other intercom unit 3.1.2

audio switching time time, from one transmission direction to the other measured from the removal of the signal in the first direction until the level in the second direction reaches 3 dB below its final value SIST EN 62820-1-2:2017

– 8 – IEC 62820-1-2:2017 © IEC 2017 3.1.3

echo return loss ability of the local intercom unit to avoid retransmitting the audio signal received from the far intercom unit back again to it 3.1.4

intercom unit devices that are able to establish an audio connection or an audio and video connection between each other (SMU, VCU and URU) and are specifically designed to be a component of a BIS Note 1 to entry: Devices which can be connected to IP transmission network such as smartphones or tablets are not considered as intercom units. 3.1.5

Internet Protocol IP network layer-3 protocol in the OSI model containing addressing and control information to enable data packets to be routed in a network and primary network layer protocol in the TCP/IP protocol suite according to IETF RFC 791 and IETF RFC 2460 and any subsequent evolution 3.1.6

IP transmission network communication network used to achieve the relevant functions of IP BIS, such as data transmission and control 3.1.7

lip sync temporal relationship between transmitted audio signal and video signal Note 1 to entry: Lip sync value is used to demonstrate the relationship between audio and video signal synchronization. 3.1.8

single talk type of non simultaneous 2 way speech in which two parties communicate by alternating speech spurts without interrupting each other 3.1.9

double talk type of non simultaneous 2 way speech in which two parties communicate by alternating speech spurts in which both parties may interrupt each other 3.1.10

subjective image quality assessment method where people, as observers, evaluate the image quality Note 1 to entry: Test environment, observer and evaluation method shall comply with certain standards, in the same way the methodology for the subjective assessment of the quality of the television pictures adopted ITU-R BT.500-13-(01/2012). 3.1.11

video delay one way delay (OWD) time of the transmitted video signal from the camera of one intercom unit through other components to the display on the other intercom unit 3.2 Abbreviated terms ACR absolute category rating

BIS building intercom system CSS composite source signal
SIST EN 62820-1-2:2017
IEC 62820-1-2:2017 © IEC 2017 – 9 –

DCR degradation category rating EUT equipment under test FPS frames per second FR frame rate IP Internet protocol LED light-emitting diode LIG LED image generator LRGP loudness rating guard-ring position

MRP mouth reference point OSI open systems interconnection OWD one way delay PSG programmable signal generator QoS quality of service SMU security management unit TVL television lines URU user receiver unit VCD video capture device VCU visitor call unit VRD video receiver device 4 Functional requirements 4.1 Basic functional requirements Basic functional requirements of IP BIS shall comply with the requirements specified in IEC 62820-1-1:2016, 4.1. 4.2 Additional functional requirements In addition to the additional functional requirements specified in IEC62820-1-1:2016, 4.2, an IP building intercom system may comply with the following requirements: a) Intercom unit to intercom unit speech URU may be able to make addressing calls to other URU and conduct two-way speech. b) Voice message function IP building intercom system may allow the caller to leave voice messages from the VCU. c) Intercom unit to intercom unit video and speech URU may be able to conduct two-way video and audio communication with other URU. d) Video and voice messages function IP building intercom system may allow the caller to leave video and voice messages from the VCU. 4.3 IP building intercom systems with SMU In addition to the functional requirements specified in 4.1 and 4.2, IP building intercom systems with SMU may comply with the following requirements: a) Automatic detection of device status The SMU may detect the status of other devices in the system. SIST EN 62820-1-2:2017

– 10 – IEC 62820-1-2:2017 © IEC 2017 b) Remote configuration and update The SMU may remotely configure the operating mode of the devices and update the firmware and software of the devices. c) Image storing and replaying function When the URU with video function is communicating with an SMU equipped with a camera, it may be able to store and replay the images captured by the SMU. 5 Performance requirements 5.1 General The performance requirements of IP BIS shall comply with the requirements specified in IEC 62820-1-1:2016, Clause 5. The following requirements shall be fulfilled when the intercom devices are linked in a local network, wired or wireless. In case some devices are linked through a public network (i.e. Internet), where it is not possible to guarantee QoS, the requirements do not apply. 5.2 Audio characteristics 5.2.1 Audio delay Audio delay between two intercom units shall not be more than 300 ms. 5.2.2 Echo return loss This requirement may be evaluated in two ways. 1) Objective evaluation Hands-free units: the echo return loss shall not be less than 45 dB. Handset unit: the echo return loss shall not be less than 46 dB. NOTE Non-simultaneous systems are evaluated by subjective test. 2) Subjective evaluation The subjective evaluation of echo return loss shall be not less than 3 points. 5.2.3 Audio switching time The audio switching time shall not be more than 200 ms. NOTE This requirement does not apply to simultaneous talk and single talk BIS. 5.3 Video characteristics 5.3.1 General Video characteristics of IP BIS shall comply with the requirements specified in IEC 62820-1-1:2016, 5.2.2 to 5.2.5 and the following. 5.3.2 Image resolution Image resolution (measured at the centre of the image) of IP BIS shall not be less than 130 TVL for the visible area smaller than 4,0 inch (10,16 cm), not be less than 240 TVL for the visible area equal or larger than 4,0 inch (10,16 cm) and smaller than 7,0 inch (17,78 cm), and not be less than 320 TVL for the visible area of 7,0 inch (17,78 cm) or larger. SIST EN 62820-1-2:2017

IEC 62820-1-2:2017 © IEC 2017 – 11 –

5.3.3 Frame rate Frame rate of digital video signals shall not be less than 15 FPS. 5.3.4 Video delay The unit-to-unit video delay shall not be more than 300 ms. 5.3.5 Lip sync Relative time difference of video and audio signal concurrent transmission should be between –185 ms and +90 ms. NOTE This only applies to Audio-Video systems and not to audio only systems. 5.3.6 Image quality Images shall not present obvious phenomenon as image blur, mosaic effect or image fracture. The average subjective image quality assessment shall not be less than 3 points. 5.4 Network and information security 5.4.1 Network access control When a user or device accesses the network of IP BIS or manages the system, the system shall identify the user or device, determine if access is granted as well as the access right. Identification ways can vary, measures other than identification may be used provided that they protect the system from unauthorized access. 5.4.2 Data integrity protection The IP BIS may detect the integrity of the users’ alarm and unlocking control data. It also may offer protection for the integrity of the users’ data by encryption or other ways. 6 Test methods 6.1 Test conditions 6.1.1 Environmental conditions Temperature: 15 ºC to 35 ºC. Relative humidity: 25 % to 75 %. Atmospheric pressure: 86 kPa to 106 kPa. 6.1.2 Electrical connection The EUT shall be connected according to the manufacturer’s recommendations for the basic configuration of the test. The EUT configuration should meet the requirements to realize the system functions. 6.2 Function test The EUT shall be operated according to the product instruction manual. The functions of the system shall be checked item by item and shall comply with the requirements specified in Clause 4. SIST EN 62820-1-2:2017

– 12 – IEC 62820-1-2:2017 © IEC 2017 6.3 Test of audio characteristics 6.3.1 Test requirements Unless otherwise stated, test conditions shall comply with the requirements as specified in IEC 62820-1-1:2016, Clause A.1, and the additional below requirements: a) The CSS signal defined by ITU-T P.501 shall be adopted. It is recommended to use 48 kHz sampling rate sequence of pseudo random noise. Every CSS signal consists of 248,62 ms excitation signal and 101,38 ms pause. The average sound pressure generated by the test signal in MRP should be –4,7 dB Pa. b) When testing the echo return loss and audio switching time it is required to measure the audio transmission at both ends. The center of both the artificial mouth and the standard half-inch (1,27 cm) free field microphone shall point towards the center of the EUT with 16 degree deviated from the central axis of the EUT as show in Figure 1. In case of handset unit the supporting panel shall be replaced by fixing the artificial mouth and standard half-inch (1,27 cm) free field microphone at the LRGP. Dimensions in metre

Figure 1 – Test configuration of echo return loss

and audio switching time diagram 6.3.2 Test of audio delay The test signal consists of four groups of CSS signals (see Figure 2). The first three groups of CSS signals are used for training, which makes the channel stable. The continuously excitation signal of the fourth CSS signal is used fo

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