SIST ETS 300 904 E2:2003

• Abstract:

  This ETS defines a set of bearer services to be provided to GSM PLMN subscribers by a GSM PLMN itself and in connection with other networks. This ETS should also be used as a reference for defining the corresponding required mobile network capabilities which are specified by means of the GSM PLMN connection type concept, defined in GSM 03.10. The recommended provision of the bearer services is under the control of the GSM MoU and is out of the scope of ETSI/TC/SMG. Bearer services not included in this specification that require modifications to the GSM signalling specifications should not be introduced unilaterally by a mobile network operator.

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.070.50 - Global System for Mobile Communication (GSM)
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI ETS 300 904 ed.2 (1997-12) - Digital cellular telecommunications system (Phase 2+) (GSM); Bearer Services (BS) supported by a GSM Public Land Mobile Network (PLMN) (GSM 02.02 version 5.3.2)

Overview

SIST ETS 300 904 E2:2003 specifies the bearer services (BS) supported by a GSM Public Land Mobile Network (PLMN), forming part of the digital cellular telecommunications system (GSM Phase 2+). Developed by the Slovenski inštitut za standardizacijo (SIST) and aligned with European Telecommunication Standards (ETS), this standard defines the services available to GSM PLMN subscribers both within the network and in connection with external telecommunications systems such as ISDN, PSTN, and various packet data networks.

Key focuses of this standard include:

• Definitions of bearer service categories and attributes
• Guidance for mobile network capabilities
• Interworking with existing networks through standard interfaces

The document ensures consistency in the implementation of GSM bearer services and serves as a reference for defining necessary network functionalities.

Key Topics

Bearer Service (BS) Categories:
The standard groups GSM bearer services into several practical categories designed for various data and communication needs:

• Unrestricted Digital Information (UDI): Enables digital data transfer without limitations.
• 3.1 kHz Audio: Facilitates interworking with ISDN/PSTN networks, enabling audio and modem connections outside the PLMN.
• PAD Access: Provides asynchronous connections to packet networks (e.g. PSPDN/ISDN) using a Packet Assembly/Disassembly (PAD) facility.
• Packet Access: Offers synchronous packet connections for access to data networks.
• Alternate Speech/Data: Allows users to switch between speech and data within a single call.
• Speech Followed by Data: Starts a call with speech, then allows switching to data.

Attributes of Bearer Services:
Bearer services are characterized according to key attributes, grouped for clarity:

• Information Transfer Attributes: Mode, rate, capability, symmetry, and communication configuration.
• Access Attributes: Channel type, rate, and protocols enabling network access.
• Interworking Attributes: Properties describing interaction with external networks.
• General Attributes: Supplementary services offered and overall quality of service.

Network Capabilities & Interworking:
The standard references the GSM PLMN connection type concept and provides guidelines for interoperability with other telecommunication infrastructures, such as ISDN, PSTN, CSPDN, and packet-switched data networks.

Applications

The practical value of SIST ETS 300 904 E2:2003 lies in its broad applicability to mobile operators, equipment manufacturers, and solution integrators:

• Mobile Network Operators: Ensures implementation of standardized bearer services in accordance with GSM global specifications, supporting efficient interworking with external networks.
• Telecommunications Equipment Manufacturers: Provides a framework for developing network components and mobile stations that comply with harmonized GSM bearer services.
• System Integrators: Assists in ensuring service compatibility and seamless connectivity across different mobile and fixed networks.
• End-User Services: Supports flexible communication options, ranging from basic voice/data to packet-switched and multimedia applications.

The documented bearer services enable subscribers to utilize a consistent range of communication services, regardless of network boundaries, ensuring quality of service and reliability.

Related Standards

SIST ETS 300 904 E2:2003 is closely related to a number of GSM and telecommunications standards, providing interoperability and reference for extended mobile services:

• GSM 02.01: Principles of telecommunication services supported by a GSM PLMN
• GSM 02.04 / ETS 300 918: General on supplementary services
• GSM 03.10: GSM PLMN connection types
• GSM 04.02: GSM PLMN access reference configuration
• GSM 07.01 - 07.03: Terminal Adaptation Functions
• GSM 09.02 - 09.11: Interworking with ISDN, PSTN, CSPDN, and packet data networks

Implementing this standard establishes a foundation for harmonized digital cellular services and promotes compatibility throughout global GSM networks. This ensures ongoing support for evolving mobile telecommunications services and technologies.

SLOVENSKI STANDARD
01-december-2003
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Digital cellular telecommunications system (Phase 2+) (GSM); Bearer Services (BS)
supported by a GSM Public Land Mobile Network (PLMN) (GSM 02.02 version 5.3.2)
Ta slovenski standard je istoveten z: ETS 300 904 Edition 2
ICS:
33.070.50 Globalni sistem za mobilno Global System for Mobile
telekomunikacijo (GSM) Communication (GSM)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN ETS 300 904
TELECOMMUNICATION December 1997
STANDARD Second Edition
Source: SMG Reference: RE/SMG-010202QR2
ICS: 33.020
Key words: Digital cellular telecommunications system, Global System for Mobile communications (GSM)
R
GLOBAL SYSTEM FOR
MOBILE COMMUNICATIONS
Digital cellular telecommunications system (Phase 2+);
Bearer Services (BS) supported by a GSM
Public Land Mobile Network (PLMN)
(GSM 02.02 version 5.3.2)
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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ETS 300 904 (GSM 02.02 version 5.3.2): December 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 300 904 (GSM 02.02 version 5.3.2): December 1997
Contents
Foreword .5
0 Scope .7
0.1 Normative references .7
0.2 Abbreviations .8
1 Framework for defining Bearer Services.8
2 Bearer Service categories.11
3 Bearer Services.12
3.1 General bearer service user data characteristics .14
3.1.1 3,1 kHz Audio .14
3.1.2 V.110 UDI.15
3.1.3 X.31 Flag Stuffing UDI.15
3.1.4 V.120 .15
3.1.5 Bit Transparent Mode.16
Annex A (informative): Change history .17
History.18

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ETS 300 904 (GSM 02.02 version 5.3.2): December 1997
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ETS 300 904 (GSM 02.02 version 5.3.2): December 1997
Foreword
This second edition European Telecommunication Standard (ETS) has been produced by the Special
Mobile Group (SMG) of the European Telecommunications Standards Institute (ETSI).
This ETS defines a set of Bearer Services to be provided within the digital cellular telecommunications
system (Phase 2+).
The specification from which this ETS has been derived was originally based on CEPT documentation,
hence the presentation of this ETS may not be entirely in accordance with the ETSI drafting rules.
Transposition dates
Date of adoption of this ETS: 5 December 1997
Date of latest announcement of this ETS (doa): 31 March 1998
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 30 September 1998
Date of withdrawal of any conflicting National Standard (dow): 30 September 1998

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ETS 300 904 (GSM 02.02 version 5.3.2): December 1997
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ETS 300 904 (GSM 02.02 version 5.3.2): December 1997
0 Scope
This European Telecommunication Standard (ETS) defines a set of Bearer Services to be provided to
GSM PLMN subscribers by a GSM PLMN itself and in connection with other networks. This ETS should
also be used as a reference for defining the corresponding required mobile network capabilities which are
specified by means of the "GSM PLMN connection type" concept, defined in GSM 03.10 [4].
The recommended provision of the Bearer Services is under the control of the GSM MoU and is out of the
scope of ETSI TC-SMG.
Bearer Services not included in this ETS that require modifications to the GSM signalling specifications
should not be introduced unilaterally by a mobile network operator.
0.1 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] GSM 01.04 (ETR 350): "Digital cellular telecommunications system (Phase 2+);
Abbreviations and acronyms".
[2] GSM 02.01: "Digital cellular telecommunications system (Phase 2+); Principles
of telecommunication services supported by a GSM Public Land Mobile Network
(PLMN)".
[3] GSM 02.04 (ETS 300 918): "Digital cellular telecommunications system
(Phase 2+); General on supplementary services".
[4] GSM 03.10: "Digital cellular telecommunications system (Phase 2+); GSM
Public Land Mobile Network (PLMN) connection types".
[5] GSM 04.02: "Digital cellular telecommunications system (Phase 2+); GSM
Public Land Mobile Network (PLMN) access reference configuration".
[6] GSM 07.01 (ETS 300 913): "Digital cellular telecommunications system
(Phase 2+); General on Terminal Adaptation Functions (TAF) for Mobile
Stations (MS)".
[7] GSM 07.02 (ETS 300 914): "Digital cellular telecommunications system
(Phase 2+); Terminal Adaptation Functions (TAF) for services using
asynchronous bearer capabilities".
[8] GSM 07.03 (ETS 300 915): "Digital cellular telecommunications system
(Phase 2+); Terminal Adaptation Functions (TAF) for services using
synchronous bearer capabilities".
[9] GSM 07.05: "Digital cellular telecommunications system (Phase 2+); Use of
Data Terminal Equipment - Data Circuit terminating Equipment (DTE - DCE)
interface for Short Message Service (SMS) and Cell Broadcast Service (CBS)".
[10] GSM 09.02 (ETS 300 974): "Digital cellular telecommunications system
(Phase 2+); Mobile Application Part (MAP) specification".
[11] GSM 09.03: "Digital cellular telecommunications system; Signalling
requirements on interworking between the Integrated Services Digital Network
(ISDN) or Public Switched Telephone Network (PSTN) and the Public Land
Mobile Network (PLMN)".
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ETS 300 904 (GSM 02.02 version 5.3.2): December 1997
[12] GSM 09.04: "Digital cellular telecommunications system; Interworking between
the Public Land Mobile Network (PLMN) and the Circuit Switched Public Data
Network (CSPDN)".
[13] GSM 09.05: "Digital cellular telecommunications system; Interworking between
the Public Land Mobile Network (PLMN) and the Packet Switched Public Data
Network (PSPDN) for Packet Assembly/Disassembly facility (PAD) access".
[14] GSM 09.06 (ETS 300 975): "Digital cellular telecommunications system
(Phase 2+); Interworking between a Public Land Mobile Network (PLMN) and a
Packet Switched Public Data Network/Integrated Services Digital Network
(PSPDN/ISDN) for the support of packet switched data transmission services".
[15] GSM 09.07 (ETS 300 976): "Digital cellular telecommunications system
(Phase 2+); General requirements on interworking between the Public Land
Mobile Network (PLMN) and the Integrated Services Digital Network (ISDN) or
Public Switched Telephone Network (PSTN)".
[16] GSM 09.10: "Digital cellular telecommunications system (Phase 2+); Information
element mapping between Mobile Station - Base Station System and BSS -
Mobile-services Switching Centre (MS - BSS - MSC) Signalling procedures and
the Mobile Application Part (MAP)".
[17] GSM 09.11: "Digital cellular telecommunications system (Phase 2+); Signalling
interworking for supplementary services".
[18] CCITT Recommendation V.120: "Support by an ISDN of data terminal
equipments with V-series type interface with provision for statistical
multiplexing".
0.2 Abbreviations
Abbreviations used in this ETS are listed in GSM 01.04 [1].
1 Framework for defining Bearer Services
Bearer Services are described by attributes, which are intended to be independent. These attributes are
described and defined in GSM 02.01 [2]. They are grouped into four categories:
i) Information transfer attributes, which characterize the network capabilities for transferring
information from a user access point in a GSM PLMN to a user access point in another network.
(Refer to GSM 02.01 [2] and GSM 04.02 [5] for definitions of user access points, originating and
terminating networks).
ii) Access attributes, which describe the means for accessing network functions or facilities as seen at
the access point in the PLMN (see GSM 02.01 [2]).
iii) Interworking attributes, which describe properties of the terminating network and its access point.
The terminating network may include another GSM PLMN or the originating PLMN (see
GSM 02.01 [2]).
iv) General attributes, which deal with the service in general.
Figure 1 shows the relation between the groups of attributes and their fields of applicability.

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ETS 300 904 (GSM 02.02 version 5.3.2): December 1997
Inform ation Transfer
and Access
Attributes (note 3)
Transit
Term inating
GSM PLMN IW F IW F
Network
Network
(note 1)
Interworking Attributes
General Attributes (note 2)
NOTE 1: A transit network may not exist for a Bearer Service.
NOTE 2: Communication may be established from either end.
NOTE 3: The information transfer and access attributes of a Bearer Service relate to a direct peer-to-
peer communication of:
- TE to TE;
- TE to a network gateway (supporting, for example, PSTN interworking); or
- network gateway to a TE.
Figure 1: Relation between the groups of attributes and fields of applicability

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ETS 300 904 (GSM 02.02 version 5.3.2): December 1997
The followi
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