ETSI ETS 300 834 ed.1 (1998-04)

Terminal Equipment (TE); Narrowband networks (PSTN or ISDN); Access to interactive audio-visual retrieval services without datafacility; Access for ISDN or PSTN videophony terminals to audio-visual databases

DE/MTA-001071

Terminalska oprema (TE) – Ozkopasovna omrežja (PSTN ali ISDN) – Dostop do avdiovizualnih poiskavnih storitev brez možnosti dostopa do podatkov – Dostop priključkov ISDN ali videofonije omrežja PSTN do avdiovizualnih podatkovnih zbirk

General Information

• Status: Published
• Publication Date: 20-Apr-1998
• Technical Committee: MTA - Multimedia Terminals & Applications
• Current Stage: 12 - Completion
• Due Date: 08-Apr-1998
• Completion Date: 21-Apr-1998
• Ref Project: SIST ETS 300 834 E1:2003 - Terminal Equipment (TE); Narrowband networks (PSTN or ISDN); Access to interactive audio-visual retrieval services without datafacility; Access for ISDN or PSTN videophony terminals to audio-visual databases

Standards Content (Sample)

SLOVENSKI STANDARD
SIST ETS 300 834 E1:2003
01-december-2003
7HUPLQDOVNDRSUHPD7(±2]NRSDVRYQDRPUHåMD3671DOL,6'1±'RVWRSGR
DYGLRYL]XDOQLKSRLVNDYQLKVWRULWHYEUH]PRåQRVWLGRVWRSDGRSRGDWNRY±'RVWRS
SULNOMXþNRY,6'1DOLYLGHRIRQLMHRPUHåMD3671GRDYGLRYL]XDOQLKSRGDWNRYQLK]ELUN
Terminal Equipment (TE); Narrowband networks (PSTN or ISDN); Access to interactive
audio-visual retrieval services without datafacility; Access for ISDN or PSTN videophony
terminals to audio-visual databases
Ta slovenski standard je istoveten z: ETS 300 834 Edition 1
ICS:
33.040.35 Telefonska omrežja Telephone networks
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
35.180 Terminalska in druga IT Terminal and other
periferna oprema IT peripheral equipment
SIST ETS 300 834 E1:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 834 E1:2003

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SIST ETS 300 834 E1:2003
EUROPEAN ETS 300 834
TELECOMMUNICATION April 1998
STANDARD
Source: MTA Reference: DE/MTA-001071
ICS: 33.020
Key words: AVI, multimedia, retrieval, terminal
Terminal Equipment (TE);
Narrowband networks (PSTN or ISDN);
Access to interactive audio-visual
retrieval services without datafacility;
Access for ISDN or PSTN videophony
terminals to audio-visual databases
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
Internet: [e-mail] - http://www.etsi.fr - http://www.etsi.org
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 1998. All rights reserved.

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ETS 300 834: April 1998
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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Contents
Foreword .5
1 Scope .7
2 Normative references.7
3 Definitions and abbreviations .9
3.1 Definitions .9
3.2 Abbreviations .10
4 Access for ISDN videophony terminals without data-facility to audio-visual retrieval services
using DTMF or SBE messages.10
4.1 Description.10
4.2 ISDN videophony .10
4.2.1 Basic communication mode .11
4.2.2 Preferred communication mode.11
4.2.3 Other communication modes .11
4.2.4 ISDN videophony terminal communication mode requirements .12
4.2.5 ISDN audio-visual database communication mode requirements .12
4.2.6 Establishment of common communication modes .12
4.3 ISDN Interactive protocols .12
4.3.1 DTMF as an ISDN interactive protocol.12
4.3.2 SBE messages as an ISDN interactive protocol: .13
4.3.3 Support of ISDN interactive protocols .15
5 Access for PSTN videophony terminals without-data facility to audio-visual retrieval services
using UserInputIndication (UII) messages .15
5.1 Description.15
5.2 PSTN videophony .16
5.2.1 Basic communication mode .16
5.2.2 Preferred communication mode.16
5.2.3 Other communication modes .17
5.2.4 PSTN videophony terminal communication mode requirements .17
5.2.5 PSTN audio-visual database communication mode requirements .17
5.2.6 Establishment of common communication modes .17
5.3 PSTN Interactive protocol: UserInputIndication (UII).17
Annex A (informative): Bibliography.19
History.20

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Foreword
This European Telecommunication Standard (ETS) has been produced by the Terminal Equipment (TE)
Technical Committee of the European Telecommunications Standards Institute (ETSI).
Transposition dates
Date of adoption of this ETS: 20 March 1998
Date of latest announcement of this ETS (doa): 31 July 1998
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 31 January 1999
Date of withdrawal of any conflicting National Standard (dow): 31 January 1999

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1 Scope
This European Telecommunication Standard (ETS) specifies how narrowband (Integrated Services Digital
Network (ISDN) or Public Switched Telephony Network (PSTN)) videophony terminals without data-facility
can access interactive audio-visual retrieval services. To control the retrieval process, the terminal should
support some interactive protocol between the end user and the service centre. For ISDN videophony
terminals, the solutions using inband signalling via Dual Tone Multi Frequency (DTMF), CCITT
Recommendation Q.23 [1] in the audio stream and the use of transmitting Single Byte Extension (SBE)
control and indication messages (ETS 300 144 [5]) are specified in this ETS. In the case of the PSTN, use
of transmitting UserInputIndication (UII) via ITU-T Recommendation H.245 [23] messages in the control
channel is specified. In I-ETS 300 837 [4], this user input is not considered as data capability.
The use of DTMF, SBE and UII enables a user to control the retrieval process via input of alphanumeric
characters from a keypad or keyboard, equivalent to the DTMF signals used in analogue telephony. This
may be used to manually operate remote equipment such as voice mail or video mail systems, menu-
driven information services etc. DTMF, SBE and UII support at least, the transmission of user input
characters '0-9', ‘*’, and ‘#’. Transmission of other characters is optional. The use of DTMF, SBE or UII as
interactive protocols is very simple, since the service centre can instruct the user, either in text or spoken,
in the same way as in voice response systems.
For Personal Computer (PC) / Work station (WS) based ISDN and PSTN videophony terminals, an
additional selection mechanism that permits pointing device selections via (push) buttons in the video
presentation area using SBE or UII messages is specified.
This ETS is applicable to audio-visual services based on retrieval of information, coded according to
ETS 300 145 [2] (in the ISDN case) or I-ETS 300 837 [4] (in the PSTN case). In this ETS the definition
"videophony" is used to address both videotelephony and videoconferencing applications.
The audio-visual retrieval services will be hosted on an audio-visual service centre. In this ETS only the
audio-visual database functionality of the service centre will be specified.
NOTE: Information retrieval using videophony terminals in combination with DTMF or SBE/UII,
are only two of the possible scenarios for the access of retrieval services and audio-
visual services on narrowband networks. In ETR 176 and ETR 272 (see annex A)
other scenarios have been described.
2 Normative references
This ETS incorporates by dated or undated reference, provisions from other publications. These
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 application referred to applies.
[1] CCITT Recommendation Q.23 (1990): "Signalling frequencies for push-button
telephone sETS and reception of those signals in exchanges".
[2] ETS 300 145 (1996): "Integrated Services Digital Network (ISDN); Audiovisual
services Videotelephone systems and terminal equipment operating on one or
two 64 kbit/s channels".
NOTE 1: ETS 300 145 is the ETSI equivalent to ITU-T Recommendation H.320 [3]. The scope
of ETS 300 145 is restricted to 1B and 2B ISDN videophones.
[3] ITU-T Recommendation H.320 (1993): "Narrow-band visual telephone systems
and terminal equipment".
[4] prI-ETS 300 837: "Public Switched Telephone Network (PSTN); Terminals for
low bitrate Multimedia communication".
NOTE 2: prI-ETS 300 837 is the ETSI equivalent to ITU-T Recommendattion H.324 [18].

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[5] ETS 300 144 (1996): "Integrated Services Digital Network (ISDN); Audiovisual
services; Frame structure for a 64 kbit/s to 1 920 kbit/s channel and associated
syntax for inband signalling".
NOTE 3: ETS 300 144 is the ETSI equivalent to ITU-T Recommendations H.221 [6] and
H.242 [12].
[6] ITU-T Recommendation H.221 (1995): "Frame structure for a 64 to 1 920 kbit/s
channel in audiovisual services".
[7] ITU-T Recommendation H.230 (1995): "Frame-synchronous control and
indication signals for audiovisual systems".
[8] ITU-T Recommendation H.223 (1996): "Multiplexing protocol for low-bitrate
multimedia communication".
[9] CCITT Recommendation B.13 (Blue Book Fasc. I.3 1991): I.3: "Terms and
definitions".
[10] ITU-T Recommendation F.300 (1994): "Videotex service".
[11] ETS 300 143 (1994) and A1: "Integrated Services Digital Network (ISDN);
Audiovisual services; Inband signalling procedures for audiovisual terminals
using digital channels up to 2 048 kbit/s".
NOTE 4: ETS 300 143 is the ETSI equivalent to ITU-T Recommendation H.242 [12].
[12] ITU-T Recommendation H.242 (1993): "System for establishing communication
between audiovisual terminals using digital channels up to 2 Mbit/s".
[13] ETS 300 142 (1995): "Integrated Services Digital Network (ISDN) and other
digital telecommunications networks; Line transmission of non-telephone
signals; Video codec for audio visual services at p · 64 kbits
[ITU-T Recommendation H.261 (1993), modified]".
NOTE 5: ETS 300 142 is the ETSI equivalent to ITU-T Recommendation H.261 [14].
[14] ITU-T Recommendation H.261 (1993): "Video codec for audiovisual services at
p · 64 kbps".
[15] CCITT Recommendation G.711 (1990): "Pulse code modulation (PCM) of voice
frequencies".
[16] CCITT Recommendation G.722 (1990): "7 kHz audio-coding within 64 kbit/s".
[17] CCITT Recommendation G.728 (1992): "Coding of speech at 16 kbit/s using
low-delay code excited linear prediction".
[18] ITU-T Recommendation H.324 (1996): "Terminal for low bitrate multimedia
communication".
[19] I-ETS 300 380 (1995): "Universal Personal Telecommunications (UPT); Access
devices Dual Tone Multi Frequency (DTMF) sender for acoustic coupling to the
microphone of a handset telephone".
[20] ITU-T Recommendation V.34 (1994): "A modem operating at data signalling
rates of up to 28 800 bit/s for use on the GSTN and on leased point-to-point
2-wire telephone-type circuits".
[21] ITU-T Recommendation G.723.1 (1996): "Dual rate speech coder for multimedia
communication transmitting at 5,3 and 6,3 kbit/s".

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[22] ITU-T Recommendation H.263 (1996): "Videocoding for low bit rate
communication".
[23] ITU-T Recommendation H.245 (1996): "Control protocol for multimedia
communication".
[24] ITU-T Recommendation V.8 (1994): "Procedures for starting sessions of data
transmission over the GSTN".
[25] ITU-T Recommendation V.8bis (1996): "Procedures for the identification and
selection of common modes of operation between data circuit terminating
equipment (DCE) and between data terminal equipment (DTE) over the general
switched telephone network and on leased point-to-point telephone-type
circuits".
[26] ITU-T Recommendation V.25ter (1995): "Serial asynchronous automatic dialling
and control".
[27] CCITT Recommendation T.61: "International Alphabet No. 5".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of this ETS, the following definitions apply:
audio-visual retrieval service: An interactive service which provides uni-directional communication by
means of real-time (no store-and-forward) end-to-end audio-visual information transfer from an audio-
visual database to the user (see also retrieval service).
ISDN audio-visual database: An information database that contains audio-visual information coded
according to ETS 300 145 [2]. In the scope of this ETS it implies that the database is least capable of
sending audio and video in a framed structure (ETS 300 144 [5]).
ISDN videophony terminal: A videophony terminal equipment that conforms to the methods described in
ETS 300 145 [2]. In the scope of this ETS it implies that the terminal is at least capable of receiving audio
and video sent in a framed structure (ETS 300 144 [5]). The terminal also may support data capabilities.
interactive protocol: A formal statement of the procedures that are adopted to ensure interactive
communication between a terminal and a service centre within the application layer function (definition
derived from protocol definition in ITU-T Recommendation F.300 [10]).
PSTN audio-visual database: An information database that contains audio-visual information coded
according to I-ETS 300 837 [4]. In the scope of this ETS it implies that the database is least capable of
sending audio and video in packet mode structure (ITU-T Recommendation H.223 [8]).
PSTN videophony terminal: A videophony terminal equipment that conforms to the methods described
in I-ETS 300 837 [4]. In the scope of this ETS it implies that the terminal is at least capable of receiving
audio and video send in packed mode (ITU-T Recommendation H.223 [8]). The terminal also may support
data capabilities.
retrieval service: An interactive service which provides the capability of accessing information stored in
databases. The information will be sent to the user on demand only. The information can be retrieved on
an individual basis, i.e., the time at which an information sequence is to start is under the control of the
user (CCITT Recommendation B.13 [9]).
service centre: A computer system used by a service provider to authorize access to a service. Other
functions of the service centre may include assistance to users in selecting the particular application
required (either provided by the service centre or by other host computers), as well as management
facilities such as billing, statistics gathering, etc. The same computer may also be a host computer and/or
provide a gateway function (definition derived from ITU-T Recommendation F.300 [10]).

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videophony: Videotelephony and/or videoconferencing are addressed in this definition.
3.2 Abbreviations
For the purposes of this ETS, the following abbreviations apply:
BAS Bit-rate Allocation Signal
CIF Common Intermediate Format
DCE Data Circuit terminating Equipment
DTE Data Terminal Equipment
DTMF Dual Tone Multi Frequency
GSTN General Switched Telephone Network
ISDN Integrated Services Digital Network
PC Personal Computer
PSTN Public Switched Telephone Network
QCIF Quarter Common Intermediate Format
SQCIF Sub-QCIF
SBE Single Byte Extension
T Terminal
UII UserInputIndication
WS Work Station
4 Access for ISDN videophony terminals without data-facility to audio-visual
retrieval services using DTMF or SBE messages
4.1 Description
This subclause specifies how ISDN videophony terminals without data-facility can access interactive
audio-visual retrieval services. Both using inband signalling via DTMF CCITT Recommendation Q.23 [1] in
the audio stream and the use of transmitting SBE control and indication signalling messages
(ETS 300 144 [5]) are specified as interactive protocols.
Audio (DTMF)  Video
Control & indication signalling: SBE messages
DB
T
ISDN
ISDN videophony terminal ISDN audio-visual database
Figure 1: ISDN videophony terminal with access to an ISDN audio-visual database, using DTMF or
SBE as interactive protocols
4.2 ISDN videophony
Both ISDN videophony terminal equipment and the ISDN audio-visual database need to conform to the
methods described in ETS 300 145 [2], but do not necessarily need to offer data capabilities. In the scope
of this ETS it implies that the terminal is at least capable of receiving audio and video sent in a framed
structure (ETS 300 144 [5]). Also that the database is at least capable of sending audio and video in a
framed structure (ETS 300 144 [5]).
The call set-up procedures described in ETS 300 143 [11] and ETS 300 145 [2] for call set-up between
terminals is also used for call set-up between a terminal and an audio-visual database. In general, the
terminal will be the call initiator, although an audio-visual database might set-up a call.
A problem area is the number of combinations that are possible for dividing the bandwidth between video
and audio, and the number of options for encoding the audio-visual information. Combination of the above
options leads to a large number of communication modes. ISDN videophony terminals support different
modes and not all modes are common between all vendors (or terminal types).

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Therefore, in this ETS one basic communication mode is specified to guarantee interoperability. This
communication mode is mandatory for both the terminal and the database. Furthermore, one preferred
communication mode is specified. The preferred communication mode gives an optimal balance between
interoperability (most common communication mode) and service quality (optimal video quality). It is an
optional capability for the terminal and mandatory capability for the database
...