Telecommunications security; Service access control and synchronization for audiovisual services

This ETS describes the functions of the Multipoint Control Unit, the acces control of a session and the synchronisation of the Confidentiality System.

Telekomunikacijska varnost – Krmiljenje in sinhronizacija dostopa do storitev pri avdiovizualnih storitvah

General Information

Status
Published
Publication Date
30-Nov-2003
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Dec-2003
Due Date
01-Dec-2003
Completion Date
01-Dec-2003

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SLOVENSKI STANDARD
SIST ETS 300 747 E1:2003
01-december-2003

Telekomunikacijska varnost – Krmiljenje in sinhronizacija dostopa do storitev pri

avdiovizualnih storitvah

Telecommunications security; Service access control and synchronization for audiovisual

services
Ta slovenski standard je istoveten z: ETS 300 747 Edition 1
ICS:
33.020 Telekomunikacije na splošno Telecommunications in
general
33.160.01 Avdio, video in avdiovizualni Audio, video and audiovisual
sistemi na splošno systems in general
SIST ETS 300 747 E1:2003 en

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

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SIST ETS 300 747 E1:2003
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SIST ETS 300 747 E1:2003
EUROPEAN ETS 300 747
TELECOMMUNICATION May 1997
STANDARD
Source: ETSI TC-Security Reference: DE/SEC-002308
ICS: 33.020
Key words: Audio, security, service
Telecommunications Security;
Service access control and synchronization
for audiovisual services
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: secretariat@etsi.fr
Tel.: +33 4 92 94 42 00 - Fax: +33 4 93 65 47 16

Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the

foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1997. All rights reserved.
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ETS 300 747: May 1997

Whilst every care has been taken in the preparation and publication of this document, errors in content,

typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to

"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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ETS 300 747: May 1997
Contents

Foreword .......................................................................................................................................................5

1 Scope ..................................................................................................................................................7

2 Normative references..........................................................................................................................7

3 Abbreviations.......................................................................................................................................7

4 General functions ................................................................................................................................8

4.1 Trusted MCUs (TMCUs) versus Non-trusted MCUs (NMCUs) ...........................................8

4.1.1 TMCU..............................................................................................................8

4.1.2 NMCU..............................................................................................................8

4.2 Chair-Control Functions for Confidentiality ..........................................................................8

4.3 Authentication ......................................................................................................................8

4.4 Routeing of ECS channel messages...................................................................................9

5 Access control.....................................................................................................................................9

5.1 Initialization of a session ......................................................................................................9

5.2 Modifications during a session.............................................................................................9

5.2.1 Participants joins a session.............................................................................9

5.2.2 Participant leaves a session............................................................................9

5.2.3 Handover of session responsibility................................................................10

5.3 Termination of a session.................................................................................................... 10

5.4 Abnormal events................................................................................................................10

6 Synchronization of the confidentiality system....................................................................................10

6.1 Introduction ........................................................................................................................10

6.2 Synchronization of session key activation..........................................................................10

History..........................................................................................................................................................11

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ETS 300 747: May 1997
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ETS 300 747: May 1997
Foreword

This European Telecommunication Standard (ETS) has been produced by the Security Technical

Committee of the European Telecommunications Standards Institute (ETSI).
Transposition dates
Date of adoption: 18 April 1997
Date of latest announcement of this ETS (doa): 31 August 1997
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 28 February 1998
Date of withdrawal of any conflicting National Standard (dow): 28 February 1998
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ETS 300 747: May 1997
1 Scope

This European Telecommunication Standard (ETS) fits into the series of standards about audiovisual

communication over the Integrated Services Digital Network (ISDN), which is introduced in the

ITU-T H.200 series of Recommendations.

In ITU-T Recommendations H.233 [1] and H.234 [2], the basic mechanisms for confidentiality and key

exchange are specified.

On top of these, this ETS specifies the confidentiality related protocol extensions needed for the

establishment, modification and termination of audiovisual conferences using one or more Multipoint

Control Units (MCUs).
2 Normative references

This ETS incorporates by dated and undated reference, provisions from other publications. These

normative references are cited at the appropriate places in the text and the publications are listed

hereafter. For dated references, subsequent amendments to or revisions of any of these publications

apply to this ETS only when incorporated in it by amendment or revision. For undated references the latest

edition of the publication referred to applies.

[1] ITU-T Recommendation H.233: "Confidentiality system for audiovisual services".

NOTE 1: ITU-T Recommendation H.233 forms the basis of ETS 300 840 [6].
[2] ITU-T Recommendation H.234: "Encryption key management and
authentication system for audiovisual services".
NOTE 2: ITU-T Recommendation H.234 forms the basis of ETS 300 841 [7].
[3] ITU-T Recommendation H.243: "Procedures for establishing communication
between three or more audiovisual terminals using digital channels up to
2 Mbit/s".

[4] ITU-T Recommendation H.231: "Multipoint control units for audiovisual systems

using digital channels up to 2 Mbit/s".
[5] ITU-T Recommendation H.230: "Frame-synchronous control and indication
signals for audiovisual systems".
[6] ETS 300 840: "Telecommunications Security; Integrated Services Digital
Network (ISDN); Confidentiality system for audiovisual services".
[7] ETS 300 840: "Telecommunications Security; Integrated Services Digital
Network (ISDN); Encryption key management and authentication system for
audiovisual services".
3 Abbreviations
For the purposes of this ETS, the following abbreviations apply:
CCK Chair Command Kill
CCT Chair-Control Terminal
ECS Encryption Control Signal
MCU Multipoint Control Unit
NMCU Non-trusted MCU
TMCU Trusted MCU
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