ETSI ETS 300 747 ed.1 (1997-05)

Telecommunications security; Service access control and synchronization for audiovisual services

DE/SEC-002308

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

General Information

• Status: Published
• Publication Date: 15-May-1997
• Technical Committee: SEC - Security
• Current Stage: 12 - Completion
• Due Date: 09-May-1997
• Completion Date: 16-May-1997
• Ref Project: SIST ETS 300 747 E1:2003 - Telecommunications security; Service access control and synchronization for audiovisual services

Standards Content (Sample)

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: [e-mail]
Tel.: [phone] - Fax: [phone]
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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SIST ETS 300 747 E1:2003
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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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SIST ETS 300 747 E1:2003
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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
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SIST ETS 300 747 E1:2003
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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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