Video surveillance systems for use in security applications - Part 1-2: Video transmission - General video transmission - requirements

EN-IEC 62676-1-2 introduces general requirements on video transmission. This standard covers the general requirements for video transmissions on performance, security and conformance to basic IP connectivity, based on available, well-known, international standards. Clauses 4 and 5 of this standard define the minimum performance requirements on video transmission for security applications in IP networks. In surveillance applications the requirements on timing, quality and availability are strict and defined in the last section of this standard. Guidelines for network architecture are given, how these requirements can be fulfilled. Clause 6 and the next clauses of this standard define requirements on basic IP connectivity of video transmission devices to be used in security applications. If a video transmission device is used in security, certain basic requirements apply. First of all a basic understanding of IP connectivity needs to be introduced which requests the device to be compliant to fundamental network protocols. These could be requirements which may be applied to all IP security devices even beyond IP video. For this reason requirements are introduced in a second step for compliance to basic streaming protocols, used in this standard for video streaming and stream control. Since security applications need high availability and reliability, general means for the transmission of the video status and health check events have to be covered. These are defined in general requirements on eventing and network device management. In security proper maintenance and setup is essential for the functioning of the video transmission device. Locating streaming devices and their capabilities is a basic requirement and covered in ´device discovery and description´.

Videoüberwachungsanlagen für Sicherungsanwendungen - Teil 1-2: Systemanforderungen - Allgemeine Anforderungen an die Videoübertragung

Systèmes de video surveillance appliqués à la sécurité - Part 1-2: Exigences générales concernant la video transmission

La CEI 62676-1-2:2013 décrit les exigences générales pour la vidéotransmission. La présente norme couvre les exigences générales pour les vidéotransmissions relatives à la performance, la sécurité et la conformité à la connectivité IP de base, fondées sur les normes internationales existantes bien connues.

Video nadzorni sistemi za varnostne aplikacije - 1-2. del: Prenos videa - Splošne zahteve (IEC 62676-1-2:2013)

Standard EN-IEC 62676-1-2 uvaja splošne zahteve v zvezi s prenosom videa. Ta standard zajema splošne zahteve za video prenose glede zmogljivosti, varnosti in skladnosti z osnovno povezljivostjo IP na podlagi razpoložljivih in dobro poznanih mednarodnih standardov. Točki 4 in 5 tega standarda določata minimalne zahteve za zmogljivost prenosa videa za varnostne aplikacije v omrežjih IP. Zahteve za časovno načrtovanje, kakovost in razpoložljivost nadzornih aplikacij so stroge ter določene v zadnjem oddelku tega standarda. Podane so smernice o izpolnjevanju teh zahtev za omrežno arhitekturo. Točka 6 in nadaljnje točke tega standarda določajo zahteve za osnovno povezljivost IP naprav za prenos videa, ki se uporabljajo v varnostnih aplikacijah. Če se naprava za prenos videa uporablja za varovanje, veljajo nekatere osnovne zahteve. Uvesti je treba predvsem osnovna načela povezljivosti IP, ki zahtevajo, da je naprava skladna s temeljnimi omrežnimi protokoli. To so lahko zahteve, ki se morda uporabljajo za vse varnostne naprave IP, ne le za video IP. Zato se v drugem koraku določijo zahteve za skladnost z osnovnimi pretočnimi protokoli, ki se v tem standardu uporabljajo za pretakanje videa in nadzor pretoka. Ker varnostne aplikacije zahtevajo visoko razpoložljivost in zanesljivost, morajo biti zajeti splošni načini za prenos dogodkov v zvezi s stanjem in nadzorom kakovosti videa. Ti dogodki so določeni v splošnih zahtevah za načrtovanje dogodkov in upravljanje omrežnih naprav. Pri varnosti sta pravilno vzdrževanje in nastavitev ključnega pomena za delovanje naprave za prenos videa. Določitev lokacije pretočnih naprav in njihovih zmogljivosti je osnovna zahteva, ki je opisana v razdelku »odkrivanje in opis naprav«.

General Information

Status
Published
Publication Date
21-Apr-2014
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
14-Apr-2014
Due Date
19-Jun-2014
Completion Date
22-Apr-2014

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SLOVENSKI STANDARD
SIST EN 62676-1-2:2014
01-maj-2014

Video nadzorni sistemi za varnostne aplikacije - 1-2. del: Prenos videa - Splošne

zahteve (IEC 62676-1-2:2013)

Video surveillance systems for use in security applications - Part 1-2: Video transmission

- General video transmission - requirements

Systèmes de video surveillance appliqués à la sécurité - Part 1-2: Exigences générales

concernant la video transmission
Ta slovenski standard je istoveten z: EN 62676-1-2:2014
ICS:
13.320 Alarmni in opozorilni sistemi Alarm and warning systems
33.160.40 Video sistemi Video systems
SIST EN 62676-1-2:2014 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 62676-1-2:2014
---------------------- Page: 2 ----------------------
SIST EN 62676-1-2:2014
EUROPEAN STANDARD
EN 62676-1-2
NORME EUROPÉENNE
March 2014
EUROPÄISCHE NORM
ICS 13.320
English version
Video surveillance systems for use in security applications -
Part 1-2: System requirements – Performance requirements for video
transmission
(IEC 62676-1-2:2013)
Systèmes de vidéosurveillance destinés à Videoüberwachungsanlagen für
être utilisés dans les applications de Sicherungsanwendungen -
sécurité - Teil 1-2: Allgemeine Anforderungen an die
Part 1-2: Exigences systèmes - Videoübertragung
Exigences de performances pour la (IEC 62676-1-2:2013)
transmission vidéo
(CEI 62676-1-2:2013)

This European Standard was approved by CENELEC on 2013-12-03. 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
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

© 2014 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 62676-1-2:2014 E
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SIST EN 62676-1-2:2014
EN 62676-1-2:2014 - 2 -
Foreword

The text of document 79/433/FDIS, future edition 1 of IEC 62676-1-2, prepared by IEC TC 79 "Alarm and

electronic security systems" was submitted to the IEC-CENELEC parallel vote and approved by

CENELEC as EN 62676-1-2:2014.
The following dates are fixed:
(dop) 2014-09-03
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2016-12-03
standards conflicting with the
document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent

rights.
Endorsement notice

The text of the International Standard IEC 62676-1-2:2013 was approved by CENELEC as a European

Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards indicated:

IEC 62676-2-3 NOTE Harmonised as EN 62676-2-3.
ISO 19111 NOTE Harmonised as EN ISO 19111.
ISO 19115 NOTE Harmonised as EN ISO 19115.
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SIST EN 62676-1-2:2014
- 3 - EN 62676-1-2:2014
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD

applies.
Publication Year Title EN/HD Year
IEC 61709 - Electric components - Reliability - Reference EN 61709 2011
conditions for failure rates and stress models
for conversion
IEC/TR 62380 - Reliability data handbook - Universal model - -
for reliability prediction of electronics
components, PCBs and equipment
IEC 62676-1-1 - Video surveillance systems for use in security EN 62676-1-1 -
applications -
Part 1-1: Video system requirements
IEC 62676-2-1 - Video surveillance systems for use in security EN 62676-2-1 -
applications -
Part 2-1: Video transmission protocols -
General requirements
ISO/IEC 10646 - Information technology - Universal Coded - -
Character Set (UCS)
ISO/IEC 13818-9 - Information technology - Generic coding of - -
moving pictures and associated audio
information -
Part 9: Extension for real time interface for
system decoders
ISO/IEC 14496-2 - Information Technology – Coding of audio- - -
visual objects -
Part 2: Visual
ISO/IEC 14496-3 - Information technology - Coding of audio- - -
visual objects -
Part 3: Audio
ISO/IEC 14496-10 - Information technology - Coding of audio- - -
visual objects -
Part 10: Advanced Video Coding
ITU-T - Pulse code modulation (PCM) of voice - -
Recommendation frequencies
G.711
ITU-T Rec .726 - General Aspects of Digital Transmission - -
Systems, Terminal Equipment - 40, 32, 24, 16
kbit/s Adaptive Differential Pulse Code
Modulation (ADPCM)
IEEE Std 1413.1 - IEEE Guide for Selecting and Using Reliability - -
Predictions Based on IEEE 1413
IETF RFC 1122 - Requirements for Internet Hosts - - -
Communication Layers
IETF RFC 1157 - Simple Network Management Protocol - -
(SNMP)
IETF RFC 1441 - Introduction to version 2 of the Internet- - -
standard Network Management Framework
IETF RFC 2030 - Simple Network Time Protocol (SNTP) - -
Version 4 for IPv4, IPv6 and OSI
---------------------- Page: 5 ----------------------
SIST EN 62676-1-2:2014
EN 62676-1-2:2014 - 4 -
Publication Year Title EN/HD Year
RFC 2069 - Digest Access Authentication - -
IETF RFC 2131 - Dynamic Host Configuration Protocol - -
IETF RFC 2246 - The TLS Protocol Version 1.0 - -
IETF RFC 2326 1998 Real time Streaming protocol (RTSP) - -
IETF RFC 2435 - RTP Payload Format for JPEG-compressed - -
Video
IETF RFC 2453 - Routing Information Protocol - -
IETF RFC 2617 - HTTP Authentication: Basic and Digest - -
Access Authentication
IETF RFC 3016 - RTP Payload Format for MPEG-4 - -
Audio/Visual Streams
IETF RFC 3268 - Advanced Encryption Standard (AES) - -
Ciphersuites for Transport Layer Security
(TLS)
IETF RFC 3315 - Dynamic Host Configuration Protocol for IPv6 - -
(DHCPv6)
IETF RFC 3410 - Introduction and Applicability Statements for - -
Internet Standard Management Framework
IETF RFC 3550 - A Transport Protocol for Real-Time - -
Applications
IETF RFC 3551 - RTP Profile for Audio and Video Conferences - -
with Minimal Control
IETF RFC 3984 - RTP Payload Format for H.264 Video - -
IETF RFC 4346 - The Transport Layer Security (TLS) Protocol - -
Version 1.1
IETF RFC 4541 - IGMP and MLD Snooping Switches - -
IETF RFC 4566 - SDP: Session Description Protocol - -
IETF RFC 4607 - Source-Specific Multicast for IP - -
IETF RFC 4862 - IPv6 Stateless Address Autoconfiguration - -
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SIST EN 62676-1-2:2014
IEC 62676-1-2
Edition 1.0 2013-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Video surveillance systems for use in security applications –
Part 1-2: System requirements – Performance requirements for video
transmission
Systèmes de vidéosurveillance destinés à être utilisés dans les applications de
sécurité –
Partie 1-2: Exigences systèmes – Exigences de performances pour la
transmission vidéo
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XA
ICS 13.320 ISBN 978-2-8322-1158-8

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.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN 62676-1-2:2014
– 2 – 62676-1-2 © IEC:2013
CONTENTS

FOREWORD ........................................................................................................................... 5

INTRODUCTION ..................................................................................................................... 7

1 Scope ............................................................................................................................... 8

2 Normative references ....................................................................................................... 8

3 Terms, definitions and abbreviations .............................................................................. 10

3.1 Terms and definitions ............................................................................................ 10

3.2 Abbreviations ........................................................................................................ 24

4 Performance requirements ............................................................................................. 26

4.1 General ................................................................................................................. 26

4.2 Network time services ........................................................................................... 27

4.2.1 General ..................................................................................................... 27

4.2.2 Real-time clock .......................................................................................... 27

4.2.3 Accurate time services for the transport stream ......................................... 27

4.3 Video transmission timing requirements ................................................................ 27

4.3.1 General ..................................................................................................... 27

4.3.2 Connection time ........................................................................................ 27

4.3.3 Connection capabilities .............................................................................. 28

4.4 Performance requirements on streaming video ...................................................... 28

4.4.1 Introduction latency, jitter, throughput ........................................................ 28

4.4.2 Requirements on network jitter .................................................................. 29

4.4.3 Packet loss ................................................................................................ 29

4.4.4 Level of performance ................................................................................. 30

4.4.5 Packet jitter ............................................................................................... 30

4.4.6 Monitoring of interconnections ................................................................... 31

5 IP video transmission network design requirements ........................................................ 31

5.1 General ................................................................................................................. 31

5.2 Overview ............................................................................................................... 31

5.3 Digital network planning ........................................................................................ 32

5.3.1 General ..................................................................................................... 32

5.3.2 Critical requirements for IP video streaming performance .......................... 32

5.3.3 Availability ................................................................................................. 33

5.4 Additional architecture principles ........................................................................... 34

5.5 Network design ..................................................................................................... 34

5.5.1 Small unicast network ................................................................................ 34

5.5.2 Small multicast video network .................................................................... 35

5.5.3 Hierarchical VSS network .......................................................................... 35

5.5.4 Effective video IP network capacity planning ............................................. 36

5.5.5 Wireless interconnections .......................................................................... 37

5.6 Replacement and redundancy ............................................................................... 37

5.6.1 Redundant network design ........................................................................ 37

5.6.2 Availability ................................................................................................. 38

5.7 Centralized and decentralized network recording and video content analytics ....... 38

6 General IP requirements ................................................................................................. 39

6.1 General ................................................................................................................. 39

6.2 IP – ISO Layer 3 .................................................................................................... 39

6.3 Addressing ............................................................................................................ 39

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SIST EN 62676-1-2:2014
62676-1-2 © IEC:2013 – 3 –

6.4 Internet control message protocol (ICMP) .............................................................. 40

6.4.1 General ..................................................................................................... 40

6.4.2 Diagnostic requirements ............................................................................ 40

6.5 Diagnostics ........................................................................................................... 41

6.6 IP multicast ........................................................................................................... 41

6.6.1 General ..................................................................................................... 41

6.6.2 Internet group multicast protocol (IGMP) requirements .............................. 41

7 Video streaming requirements ........................................................................................ 41

7.1 General ................................................................................................................. 41

7.2 Transport protocol ................................................................................................. 42

7.2.1 General ..................................................................................................... 42

7.2.2 JPEG over RTP ......................................................................................... 42

7.2.3 JPEG over HTTP ....................................................................................... 42

7.3 Documentation and specification ........................................................................... 43

7.3.1 General ..................................................................................................... 43

7.3.2 Non-compliant, proprietary and vendor specific payload formats ................ 43

7.3.3 Receiving unsupported RTP payload formats............................................. 44

7.4 Streaming of metadata .......................................................................................... 44

7.4.1 General ..................................................................................................... 44

7.4.2 XML documents as payload ....................................................................... 44

7.4.3 General ..................................................................................................... 44

8 Video stream control requirements ................................................................................. 45

8.1 General ................................................................................................................. 45

8.2 Usage of RTSP in video transmission devices ....................................................... 45

8.2.1 General ..................................................................................................... 45

8.2.2 The use of RTSP with multicast ................................................................. 45

8.3 RTSP standards track requirements ...................................................................... 46

8.3.1 General ..................................................................................................... 46

8.3.2 High level IP video streaming and control interfaces .................................. 46

8.3.3 Minimal RTSP method and header implementation .................................... 46

8.3.4 RTSP authentication .................................................................................. 46

9 Device discovery and description requirements .............................................................. 46

10 Eventing requirements .................................................................................................... 47

11 Network device management requirements..................................................................... 47

11.1 General ................................................................................................................. 47

11.2 IP video MIB example ............................................................................................ 48

11.3 The SNMP agent and manager for video transmission devices .............................. 48

11.4 Performance requirements on the SNMP agent ..................................................... 49

11.5 VSS SNMP trap requirements for event management ............................................ 50

12 Network security requirements ....................................................................................... 50

12.1 General ................................................................................................................. 50

12.2 Transport level security requirements for SG4 transmission .................................. 51

Bibliography .......................................................................................................................... 52

Figure 1 – Network buffer ..................................................................................................... 29

Figure 2 – Network latency, jitter, loss .................................................................................. 33

Figure 3 – System design ..................................................................................................... 34

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SIST EN 62676-1-2:2014
– 4 – 62676-1-2 © IEC:2013

Figure 4 – Small network ...................................................................................................... 35

Figure 5 – Multicast network ................................................................................................. 35

Figure 6 – Hierarchical network............................................................................................. 36

Figure 7 – Redundant network .............................................................................................. 38

Figure 8 – MIB structure ....................................................................................................... 48

Table 1 – Time service accuracy for video transport stream .................................................. 27

Table 2 – Interconnections – Timing requirements ................................................................ 28

Table 3 – Video transmission network requirements ............................................................. 28

Table 4 – Video transmission network requirements ............................................................. 28

Table 5 – Performance requirements video streaming and stream display ............................ 30

Table 6 – Video stream network packet jitter ......................................................................... 31

Table 7 – Monitoring of interconnections ............................................................................... 31

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SIST EN 62676-1-2:2014
62676-1-2 © IEC:2013 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
VIDEO SURVEILLANCE SYSTEMS
FOR USE IN SECURITY APPLICATIONS –
Part 1-2: System requirements –
Performance requirements for video transmission
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 62676-1-2 has been prepared by IEC technical committee 79:

Alarm and electronic security systems.
The text of this standard is based on the following documents:
FDIS Report on voting
79/433/FDIS 79/446/RVD

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts in the IEC 62676, published under the general title Video surveillance

systems for use in security applications, can be found on the IEC website.
---------------------- Page: 11 ----------------------
SIST EN 62676-1-2:2014
– 6 – 62676-1-2 © IEC:2013

The committee has decided that the contents of this publication will remain unchanged until

the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data

related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates

that it contains colours which are considered to be useful for the correct

understanding of its contents. Users should therefore print this document using a

colour printer.
---------------------- Page: 12 ----------------------
SIST EN 62676-1-2:2014
62676-1-2 © IEC:2013 – 7 –
INTRODUCTION

The IEC Technical Committee 79 in charge of alarm and electronic security systems together

with many governmental organisations, test houses and equipment manufacturers have

defined a common framework for video surveillance transmission in order to achieve

interoperability between products.

The IEC 62676 series of standards on video surveillance system is divided into 4 independent

parts:
Part 1: System requirements
Part 2: Video transmission protocols
Part 3: Analog and digital video interfaces
Part 4: Application guidelines (to be published)

Each part has its own clauses on scope, references, definitions and requirements.

This IEC 62676-1 series consists of 2 subparts, numbered parts 1-1 and 1-2 respectively:

IEC 62676-1-1, System requirements – General

IEC 62676-1-2, System requirements – Performance requirements for video transmission

The second subpart of this IEC 62676-1 series applies to video transmission. The purpose of

the transmission system in a Video Surveillance System (VSS) installation is to provide

reliable transmission of video signals between the different types of VSS equipment in

security, safety and monitoring applications.

Today VSS reside in security networks using IT infrastructure, equipment and connections

within the protected site itself.
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SIST EN 62676-1-2:2014
– 8 – 62676-1-2 © IEC:2013
VIDEO SURVEILLANCE SYSTEMS
FOR USE IN SECURITY APPLICATIONS –
Part 1-2: System requirements –
Performance requirements for video transmission
1 Scope

This part of IEC 62676 introduces general requirements on video transmission. This standard

covers the general requirements for video transmissions on performance, security and

conformance to basic IP connectivity, based on available, well-known, international standards.

Clauses 4 and 5 of this standard define the minimum performance requirements on video

transmission for security applications in IP networks. In surveillance applications the

requirements on timing, quality and availability are strict and defined in the last section of this

standard. Guidelines for network architecture are given, how these requirements can be

fulfilled.

Clause 6 and the next clauses of this standard define requirements on basic IP connectivity of

video transmission devices to be used in security applications. If a video transmission device

is used in security, certain basic requirements apply. First of all a basic understanding of IP

connectivity needs to be introduced which requests the device to be compliant to fundamental

network protocols. These could be requirements which may be applied to all IP security

devices even beyond IP video. For this reason requirements are introduced in a second step

for compliance to
...

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