General Information

Abstract

This Technical Basis for Regulation (TBR) specifies the technical requirements to be met by terminal equipment capable of connecting to a public telecommunications network. These requirements apply to terminals for Phase 2 of the public land mobile radio service, operating in the 900 MHz band with a channel separation of 200 kHz, utilising constant envelope modulation and carrying traffic channels according to the Time Division Multiple Access (TDMA) principle. This TBR specifies the requirements for GSM Telephony (speech) for the GSM900 version of the Global System for Mobile communications (GSM). For each test purpose and its corresponding conformance requirement, a reference is given to ETS 300 607-1 (GSM 11.10-1) [2]. The requirements apply to speech transmission. The measurement uncertainty is handled, as described in ETS 300 607-1 (GSM 11.10-1) [2]. This TBR covers the essential requirements of the Terminal Directive 91/263/EEC [1] Article 4g. Articles 4d, 4e, and 4f are covered by TBR 19. The Terminal Directive 91/263/EEC Articles 4a and 4b are covered by other directives, and, therefore, not by this TBR. In this TBR, there are no Electromagnetic Compatibility technical requirements in terms of the Terminal Directive 91/263/EEC, Article 4c. NOTE: Technical Requirements for EMC performance and testing of the equipment are covered by the relevant standards applicable to the EMC Directive 89/336/EEC, Annex A. Terminal equipment may be subject to additional requirements in other Common Technical Regulations (CTR) depending on the equipments functionality. ETS 300 607-1 (GSM 11.10-1) [2] constitutes the conformance test suite for GSM. The verification of the conformance requirements in this TBR is based on the tests described in this ref rence. The set of requirements in ETS 300 607-1 (GSM 11.10-1) [2] and the set of requirements in this TBR need not be identical. Some requirements only apply to specific types of mobile station (e.g. data tests only apply to mobil

Status
Published
Publication Date
31-May-2000
Withdrawal Date
30-Sep-2003
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Jun-2000
Due Date
01-Jun-2000
Completion Date
01-Jun-2000
Mandate
T-237I-A

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Overview

SIST TBR 020:2000 defines the essential technical requirements for mobile stations (terminals) operating under the European digital cellular telecommunications system (GSM Phase 2), specifically focusing on GSM telephony (speech) in the GSM900 band. Developed by the Slovenian Institute for Standardization (SIST) and aligned with European regulations, this Technical Basis for Regulation (TBR) ensures that GSM terminals connected to public mobile networks meet a baseline of performance and interoperability.

The standard applies to terminal equipment using the 900 MHz frequency band with a channel separation of 200 kHz, constant envelope modulation, and Time Division Multiple Access (TDMA) technology. By referencing ETS 300 607-1 (GSM 11.10-1), it ensures devices are tested for conformance, particularly regarding speech transmission quality.

Key Topics

  • Speech Transmission Requirements: Establishes minimum quality standards for speech (telephony) over GSM900, addressing parameters such as sending and receiving sensitivity, loudness, side tone masking, distortion, and transmission delay.
  • Conformance and Testing: Outlines a clear link between each technical requirement and its corresponding conformance test, referencing ETS 300 607-1 as the conformance test suite.
  • Regulatory Compliance: Satisfies the essential requirements of the Terminal Directive 91/263/EEC Article 4g, ensuring interworking and network compatibility for terminal equipment within the European Union.
  • Accessory and Equipment Coverage: Applies to mobile stations and any active accessory that affects the terminal's performance regarding conformance to essential requirements.
  • Dynamic and Static Requirements: Includes tables for static manufacturer declarations and dynamic test requirements, supporting transparent assessment of conformity.

Applications

SIST TBR 020:2000 is vital for manufacturers, network operators, and regulatory authorities involved in the deployment of GSM900 mobile terminals within Europe. Key applications include:

  • Product Certification: Ensuring GSM mobile stations meet standardized technical requirements before market entry or integration into EU telecommunications networks.
  • Terminal Development: Guiding designers and developers to implement compliant hardware and software for GSM telephony, including proper speech processing and channel access.
  • Interoperability Assurance: Facilitating seamless mobile station interoperability across GSM networks by enforcing consistent conformance criteria.
  • Quality of Service: Setting minimum quality thresholds for speech intelligibility and performance, which help maintain reliable voice communication services for end-users.
  • Regulatory Approvals: Supporting approval and acceptance under European telecommunications directives, contributing to harmonized equipment acceptance across member states.

Related Standards

For comprehensive GSM terminal compliance and system performance, the following standards and regulations are closely related to SIST TBR 020:2000:

  • ETS 300 607-1 (GSM 11.10-1): The primary conformance specification referenced for all test purposes related to GSM mobile stations.
  • Terminal Directive 91/263/EEC: The foundational European directive for telecommunications terminal equipment, specifying essential regulatory requirements.
  • TBR 19: Covers access requirements for GSM mobile stations, complementing the speech-focused requirements in SIST TBR 020:2000.
  • EMC Directive 89/336/EEC: Addresses Electromagnetic Compatibility (EMC) requirements, which are handled by separate standards and not directly by SIST TBR 020:2000.
  • Other Relevant GSM Standards: ETS 300 504 (types of mobile stations), ETS 300 540 (speech service transmission planning), providing additional technical context for full system alignment.

Practical Value

Adhering to SIST TBR 020:2000 guarantees that GSM900 terminals and accessories deliver reliable, high-quality telephony services that are compatible with European networks. This standard underpins product interoperability, expedites regulatory certification, and reinforces a harmonized telecommunications market within the EU. By referencing recognized European and international specifications, it positions manufacturers and service providers to successfully deploy compliant, user-centric mobile devices.

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PSIST TBR 020:2000

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SIST TBR 020:2000

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Frequently Asked Questions

SIST TBR 020:2000 is a standardization document published by the Slovenian Institute for Standardization (SIST). Its full title is "European digital cellular telecommunications system (Phase 2); Attachment requirements for Global System for Mobile communications (GSM) mobile stations; Telephony". This standard covers: This Technical Basis for Regulation (TBR) specifies the technical requirements to be met by terminal equipment capable of connecting to a public telecommunications network. These requirements apply to terminals for Phase 2 of the public land mobile radio service, operating in the 900 MHz band with a channel separation of 200 kHz, utilising constant envelope modulation and carrying traffic channels according to the Time Division Multiple Access (TDMA) principle. This TBR specifies the requirements for GSM Telephony (speech) for the GSM900 version of the Global System for Mobile communications (GSM). For each test purpose and its corresponding conformance requirement, a reference is given to ETS 300 607-1 (GSM 11.10-1) [2]. The requirements apply to speech transmission. The measurement uncertainty is handled, as described in ETS 300 607-1 (GSM 11.10-1) [2]. This TBR covers the essential requirements of the Terminal Directive 91/263/EEC [1] Article 4g. Articles 4d, 4e, and 4f are covered by TBR 19. The Terminal Directive 91/263/EEC Articles 4a and 4b are covered by other directives, and, therefore, not by this TBR. In this TBR, there are no Electromagnetic Compatibility technical requirements in terms of the Terminal Directive 91/263/EEC, Article 4c. NOTE: Technical Requirements for EMC performance and testing of the equipment are covered by the relevant standards applicable to the EMC Directive 89/336/EEC, Annex A. Terminal equipment may be subject to additional requirements in other Common Technical Regulations (CTR) depending on the equipments functionality. ETS 300 607-1 (GSM 11.10-1) [2] constitutes the conformance test suite for GSM. The verification of the conformance requirements in this TBR is based on the tests described in this ref rence. The set of requirements in ETS 300 607-1 (GSM 11.10-1) [2] and the set of requirements in this TBR need not be identical. Some requirements only apply to specific types of mobile station (e.g. data tests only apply to mobil

This Technical Basis for Regulation (TBR) specifies the technical requirements to be met by terminal equipment capable of connecting to a public telecommunications network. These requirements apply to terminals for Phase 2 of the public land mobile radio service, operating in the 900 MHz band with a channel separation of 200 kHz, utilising constant envelope modulation and carrying traffic channels according to the Time Division Multiple Access (TDMA) principle. This TBR specifies the requirements for GSM Telephony (speech) for the GSM900 version of the Global System for Mobile communications (GSM). For each test purpose and its corresponding conformance requirement, a reference is given to ETS 300 607-1 (GSM 11.10-1) [2]. The requirements apply to speech transmission. The measurement uncertainty is handled, as described in ETS 300 607-1 (GSM 11.10-1) [2]. This TBR covers the essential requirements of the Terminal Directive 91/263/EEC [1] Article 4g. Articles 4d, 4e, and 4f are covered by TBR 19. The Terminal Directive 91/263/EEC Articles 4a and 4b are covered by other directives, and, therefore, not by this TBR. In this TBR, there are no Electromagnetic Compatibility technical requirements in terms of the Terminal Directive 91/263/EEC, Article 4c. NOTE: Technical Requirements for EMC performance and testing of the equipment are covered by the relevant standards applicable to the EMC Directive 89/336/EEC, Annex A. Terminal equipment may be subject to additional requirements in other Common Technical Regulations (CTR) depending on the equipments functionality. ETS 300 607-1 (GSM 11.10-1) [2] constitutes the conformance test suite for GSM. The verification of the conformance requirements in this TBR is based on the tests described in this ref rence. The set of requirements in ETS 300 607-1 (GSM 11.10-1) [2] and the set of requirements in this TBR need not be identical. Some requirements only apply to specific types of mobile station (e.g. data tests only apply to mobil

SIST TBR 020:2000 is classified under the following ICS (International Classification for Standards) categories: 33.070.50 - Global System for Mobile Communication (GSM). The ICS classification helps identify the subject area and facilitates finding related standards.

SIST TBR 020:2000 is associated with the following European legislation: Standardization Mandates: T-237I-A. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.

SIST TBR 020:2000 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


SLOVENSKI STANDARD
3SIST TBR 020:2000
01-MDQXDU-2000
(YURSVNLGLJLWDOQLFHOLþQLWHOHNRPXQLNDFLMVNLVLVWHP ID]D 3ULNOMXþLWYHQH]DKWHYH
PRELOQLKSRVWDMVLVWHPD*60 JOREDOQLVLVWHPPRELOQLKNRPXQLNDFLM 7HOHIRQLMD
European digital cellular telecommunications system (Phase 2); Attachment
requirements for Global System for Mobile communications (GSM) mobile stations;
Telephony
Ta slovenski standard je istoveten z: TBR 020 Edition 3
ICS:
33.070.50 Globalni sistem za mobilno Global System for Mobile
telekomunikacijo (GSM) Communication (GSM)
3SIST TBR 020:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL TBR 20
BASIS for September 1997
REGULATION Third Edition
Source: ETSI SMG Reference: RTBR/SMG-0720TTCNR
ICS: 33.020
Key words: European digital cellular telecommunications system, Global System for Mobile communications
(GSM)
R
GLOBAL SYSTEM FOR
MOBILE COMMUNICATIONS
European digital cellular telecommunications system (Phase 2);
Attachment requirements for Global System for Mobile
communications (GSM) mobile stations;
Telephony
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.

Page 2
TBR 20: September 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.

Page 3
TBR 20: September 1997
Contents
Foreword .5
1 Scope .7
2 Normative references.8
3 Abbreviations.8
4 Requirements.8
Annex A (normative): The TBR Requirement Table (TBR-RT).12
A.1 Introduction to the TBR-RT .12
A.2 Format of the tables .12
A.3 References to ETS 300 607-1 (GSM 11.10-1).13
A.4 Notations used in the TBR-RT .14
A.4.1 Status Notations.14
A.4.2 Support Answer Notations .14
A.5 The TBR Requirement Tables .14
A.5.1 Static Requirements, TBR-RT A.14
A.5.2 Dynamic Requirements, TBR-RT B.15
History.16

Page 4
TBR 20: September 1997
Blank page
Page 5
TBR 20: September 1997
Foreword
This Technical Basis for Regulation (TBR) has been produced by the Special Mobile Group (SMG) of the
European Telecommunications Standards Institute (ETSI).
This TBR covers the requirements for GSM Telephony (speech).
This TBR contains the procedures and requirements for the approval testing of GSM terminal equipment
for speech.
The requirements of other TBRs apply in addition to this TBR.
For each test, supplementary information is provided, giving a justification why this item has been selected
for regulatory testing, and a reference to the relevant article of the Terminal Directive [1].
This TBR is based on the ETS 300 607-1 (GSM 11.10-1 version 4.18.0) [2].
This TBR 20 corresponds to SMG TBR 20 version 4.0.2 and is a result of further work within SMG.
NOTE: This TBR for Phase 2 may be developed in stages. The first release will include, as a
minimum, all of the basic Phase 2 requirements for full rate and primary band.
Subsequent releases will include additional requirements.

Page 6
TBR 20: September 1997
Blank page
Page 7
TBR 20: September 1997
1 Scope
This Technical Basis for Regulation (TBR) specifies the technical requirements to be met by terminal
equipment capable of connecting to a public telecommunications network. These requirements apply to
terminals for Phase 2 of the public land mobile radio service, operating in the 900 MHz band with a
channel separation of 200 kHz, utilizing constant envelope modulation and carrying traffic channels
according to the Time Division Multiple Access (TDMA) principle.
This TBR specifies the requirements for GSM Telephony (speech) for the GSM900 version of the Global
System for Mobile communications (GSM).
For each test purpose and its corresponding conformance requirement, a reference is given to
ETS 300 607-1 (GSM 11.10-1) [2]. The requirements apply to speech transmission.
The measurement uncertainty is handled, as described in ETS 300 607-1 (GSM 11.10-1) [2].
This TBR covers the essential requirements of the Terminal Directive 91/263/EEC [1] Article 4g.
Articles 4d, 4e, and 4f are covered by TBR 19 [3].
The Terminal Directive 91/263/EEC Articles 4a and 4b are covered by other directives, and, therefore, not
by this TBR.
In this TBR, there are no Electromagnetic Compatibility technical requirements in terms of the Terminal
Directive 91/263/EEC, Article 4c.
NOTE 1: Technical Requirements for EMC performance and testing of the equipment are
covered by the relevant standards applicable to the EMC Directive 89/336/EEC,
annex A.
Terminal equipment may be subject to additional requirements in other Common Technical Regulations
(CTR) depending on the equipments functionality.
ETS 300 607-1 (GSM 11.10-1) [2] constitutes the conformance test suite for GSM. The verification of the
conformance requirements in this TBR is based on the tests described in this reference. The set of
requirements in ETS 300 607-1 (GSM 11.10-1) [2] and the set of requirements in this TBR need not be
identical.
Some requirements only apply to specific types of mobile station (e.g. data tests only apply to mobile
stations with a data facility). The TBR also indicates the specific test which shall be carried out for each
mobile station type.
An active accessory is covered by this TBR if it modifies the terminal performance in an aspect which
affects conformance to essential requirements.
NOTE 2: Only active devices are subject to this TBR. Accessories may be tested with specific
terminals, and either approved for use with those terminals only, or may possibly be
approved for use with a wider range of terminals, depending on the nature and effect
of the accessory.
Page 8
TBR 20: September 1997
2 Normative references
This TBR incorporates, by dated or 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 revision of any of these publications apply
to the requirements specified in this TBR, only when incorporated in it by amendment or revision. For
undated references the latest edition of the publication referred to applies.
[1] Terminal Directive 91/263/EEC: "Council directive of 29 April 1991 on the
approximation of the laws of the Member States concerning telecommunications
terminal equipment, including the mutual recognition of their conformity. ("The
Terminal Directive")".
[2] ETS 300 607-1 (GSM 11.10-1 version 4.18.0): "Digital cellular
telecommunications system (Phase 2); Mobile station conformity specifications".
[3] TBR 19 Edition 4: " European digital cellular telecommunications system
(Phase 2); Attachment requirements for Global System for Mobile
communications (GSM) mobile stations; Access".
[4] ETS 300 540 (GSM 03.50 version 4.2.0): "Digital cellular telecommunications
system (Phase 2); Transmission planning aspects of the speech service in the
GSM Public Land Mobile Network (PLMN) system".
[5] ETS 300 504 Edition 3 (GSM 02.06 version 4.4.0): "Digital cellular
telecommunications system (Phase 2); Types of Mobile Stations (MS)".
3 Abbreviations
For the purposes of this TBR, the following abbreviations apply:
CTR Common Technical Regulations
DTX Discontinuous Transmission (mechanism)
EL Echo Loss
MMI Man Machine Interface
MS GSM Mobile Station
TCH Traffic CHannel
TCH/FS Full rate Traffic CHannel for Speech
TCH/HS Half rate Traffic CHannel for Speech
TDMA Time Division Multiple Access
4 Requirements
The following table contains all requirements that are needed to meet the essential requirements as
defined in the Terminal Directive [1]. A justification according to article 4 of the Terminal Directive [1] is
given by stating the relevant category (g) together with a text supporting the justification.
The entries are defined as follows:
- "ETS 300 607-1 Item" defines the item number of the conformance requirement and also the
reference to ETS 300 607-1 (GSM 11.10-1) [2]. This reference is a normative reference to a
subclause of ETS 300 607-1 (GSM 11.10-1) [2] containing the conformance requirement text, and
references to the base standard.
- "Description" contains a short description of the requirement.
- "TBR Justification" contains supplementary information to explain the justification of the requirement
according to article 4 of the Terminal Directive [1].
- "TD Cat" defines the category according to article 4 of the Terminal Directive [1].

Page 9
TBR 20: September 1997
- "Test Cat" defines whether the requirement is covered by a "special test situation" (e.g. a
manufacturer’s declaration of some form). An "X" indicates a special test situation, whilst, a blank
entry indicates conformity is by the test referred to by this TBR.
Table 1: Requirements and Justifications
ETS 300 607-1 Description TBR Justification TD Cat Test
Item Cat
14.4.3 Co channel rejection - Non compliance in this area may
g
TCH/HS (SID frames) impair speech quality.
30.1 Sending sensitivity / If this requirement is not met, the MS g
frequency response will not be able to produce a
reasonable speech intelligibility.
30.2 Sending loudness rating If this requirement is not met, the MS g
will not be able to produce a
reasonable speech intelligibility.
30.3 Receiving sensitivity / If this requirement is not met, the MS g
frequency response will not be able to produce a
reasonable speech intelligibility.
30.4 Receiving loudness rating If this requirement is not met, the MS g
will not be able to produce a
reasonable speech intelligibility.
30.5.1 Side Tone Masking Rating If this requirement is not met, the MS g
(STMR) will not be able to produce a
reasonable speech intelligibility.
30.5.2 Listener Side Tone Rating If this requirement is not met, the MS g X
(LSTR) will not be able to produce a
reasonable speech intelligibility.
30.6.1 Telephone acoustic coupling If this requirement is not met, the MS g
loss (TAL) - Echo loss (EL) will not be able to produce a
reasonable speech intelligibility.
30.6.2 Telephone acoustic coupling If this requirement is not met, the MS g
loss (TAL) - Stability margin will not be able to produce a
reasonable speech intelligibility.
30.7.1 Distortion - Sending If this requirement is not met, the MS g
will n
...


SLOVENSKI STANDARD
01-junij-2000
(YURSVNLGLJLWDOQLFHOLþQLWHOHNRPXQLNDFLMVNLVLVWHP ID]D 3ULNOMXþLWYHQH]DKWHYH
PRELOQLKSRVWDMVLVWHPD*60 JOREDOQLVLVWHPPRELOQLKNRPXQLNDFLM 7HOHIRQLMD
European digital cellular telecommunications system (Phase 2); Attachment
requirements for Global System for Mobile communications (GSM) mobile stations;
Telephony
Ta slovenski standard je istoveten z: TBR 020 Edition 3
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.

TECHNICAL TBR 20
BASIS for September 1997
REGULATION Third Edition
Source: ETSI SMG Reference: RTBR/SMG-0720TTCNR
ICS: 33.020
Key words: European digital cellular telecommunications system, Global System for Mobile communications
(GSM)
R
GLOBAL SYSTEM FOR
MOBILE COMMUNICATIONS
European digital cellular telecommunications system (Phase 2);
Attachment requirements for Global System for Mobile
communications (GSM) mobile stations;
Telephony
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.

Page 2
TBR 20: September 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.

Page 3
TBR 20: September 1997
Contents
Foreword .5
1 Scope .7
2 Normative references.8
3 Abbreviations.8
4 Requirements.8
Annex A (normative): The TBR Requirement Table (TBR-RT).12
A.1 Introduction to the TBR-RT .12
A.2 Format of the tables .12
A.3 References to ETS 300 607-1 (GSM 11.10-1).13
A.4 Notations used in the TBR-RT .14
A.4.1 Status Notations.14
A.4.2 Support Answer Notations .14
A.5 The TBR Requirement Tables .14
A.5.1 Static Requirements, TBR-RT A.14
A.5.2 Dynamic Requirements, TBR-RT B.15
History.16

Page 4
TBR 20: September 1997
Blank page
Page 5
TBR 20: September 1997
Foreword
This Technical Basis for Regulation (TBR) has been produced by the Special Mobile Group (SMG) of the
European Telecommunications Standards Institute (ETSI).
This TBR covers the requirements for GSM Telephony (speech).
This TBR contains the procedures and requirements for the approval testing of GSM terminal equipment
for speech.
The requirements of other TBRs apply in addition to this TBR.
For each test, supplementary information is provided, giving a justification why this item has been selected
for regulatory testing, and a reference to the relevant article of the Terminal Directive [1].
This TBR is based on the ETS 300 607-1 (GSM 11.10-1 version 4.18.0) [2].
This TBR 20 corresponds to SMG TBR 20 version 4.0.2 and is a result of further work within SMG.
NOTE: This TBR for Phase 2 may be developed in stages. The first release will include, as a
minimum, all of the basic Phase 2 requirements for full rate and primary band.
Subsequent releases will include additional requirements.

Page 6
TBR 20: September 1997
Blank page
Page 7
TBR 20: September 1997
1 Scope
This Technical Basis for Regulation (TBR) specifies the technical requirements to be met by terminal
equipment capable of connecting to a public telecommunications network. These requirements apply to
terminals for Phase 2 of the public land mobile radio service, operating in the 900 MHz band with a
channel separation of 200 kHz, utilizing constant envelope modulation and carrying traffic channels
according to the Time Division Multiple Access (TDMA) principle.
This TBR specifies the requirements for GSM Telephony (speech) for the GSM900 version of the Global
System for Mobile communications (GSM).
For each test purpose and its corresponding conformance requirement, a reference is given to
ETS 300 607-1 (GSM 11.10-1) [2]. The requirements apply to speech transmission.
The measurement uncertainty is handled, as described in ETS 300 607-1 (GSM 11.10-1) [2].
This TBR covers the essential requirements of the Terminal Directive 91/263/EEC [1] Article 4g.
Articles 4d, 4e, and 4f are covered by TBR 19 [3].
The Terminal Directive 91/263/EEC Articles 4a and 4b are covered by other directives, and, therefore, not
by this TBR.
In this TBR, there are no Electromagnetic Compatibility technical requirements in terms of the Terminal
Directive 91/263/EEC, Article 4c.
NOTE 1: Technical Requirements for EMC performance and testing of the equipment are
covered by the relevant standards applicable to the EMC Directive 89/336/EEC,
annex A.
Terminal equipment may be subject to additional requirements in other Common Technical Regulations
(CTR) depending on the equipments functionality.
ETS 300 607-1 (GSM 11.10-1) [2] constitutes the conformance test suite for GSM. The verification of the
conformance requirements in this TBR is based on the tests described in this reference. The set of
requirements in ETS 300 607-1 (GSM 11.10-1) [2] and the set of requirements in this TBR need not be
identical.
Some requirements only apply to specific types of mobile station (e.g. data tests only apply to mobile
stations with a data facility). The TBR also indicates the specific test which shall be carried out for each
mobile station type.
An active accessory is covered by this TBR if it modifies the terminal performance in an aspect which
affects conformance to essential requirements.
NOTE 2: Only active devices are subject to this TBR. Accessories may be tested with specific
terminals, and either approved for use with those terminals only, or may possibly be
approved for use with a wider range of terminals, depending on the nature and effect
of the accessory.
Page 8
TBR 20: September 1997
2 Normative references
This TBR incorporates, by dated or 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 revision of any of these publications apply
to the requirements specified in this TBR, only when incorporated in it by amendment or revision. For
undated references the latest edition of the publication referred to applies.
[1] Terminal Directive 91/263/EEC: "Council directive of 29 April 1991 on the
approximation of the laws of the Member States concerning telecommunications
terminal equipment, including the mutual recognition of their conformity. ("The
Terminal Directive")".
[2] ETS 300 607-1 (GSM 11.10-1 version 4.18.0): "Digital cellular
telecommunications system (Phase 2); Mobile station conformity specifications".
[3] TBR 19 Edition 4: " European digital cellular telecommunications system
(Phase 2); Attachment requirements for Global System for Mobile
communications (GSM) mobile stations; Access".
[4] ETS 300 540 (GSM 03.50 version 4.2.0): "Digital cellular telecommunications
system (Phase 2); Transmission planning aspects of the speech service in the
GSM Public Land Mobile Network (PLMN) system".
[5] ETS 300 504 Edition 3 (GSM 02.06 version 4.4.0): "Digital cellular
telecommunications system (Phase 2); Types of Mobile Stations (MS)".
3 Abbreviations
For the purposes of this TBR, the following abbreviations apply:
CTR Common Technical Regulations
DTX Discontinuous Transmission (mechanism)
EL Echo Loss
MMI Man Machine Interface
MS GSM Mobile Station
TCH Traffic CHannel
TCH/FS Full rate Traffic CHannel for Speech
TCH/HS Half rate Traffic CHannel for Speech
TDMA Time Division Multiple Access
4 Requirements
The following table contains all requirements that are needed to meet the essential requirements as
defined in the Terminal Directive [1]. A justification according to article 4 of the Terminal Directive [1] is
given by stating the relevant category (g) together with a text supporting the justification.
The entries are defined as follows:
- "ETS 300 607-1 Item" defines the item number of the conformance requirement and also the
reference to ETS 300 607-1 (GSM 11.10-1) [2]. This reference is a normative reference to a
subclause of ETS 300 607-1 (GSM 11.10-1) [2] containing the conformance requirement text, and
references to the base standard.
- "Description" contains a short description of the requirement.
- "TBR Justification" contains supplementary information to explain the justification of the requirement
according to article 4 of the Terminal Directive [1].
- "TD Cat" defines the category according to article 4 of the Terminal Directive [1].

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TBR 20: September 1997
- "Test Cat" defines whether the requirement is covered by a "special test situation" (e.g. a
manufacturer’s declaration of some form). An "X" indicates a special test situation, whilst, a blank
entry indicates conformity is by the test referred to by this TBR.
Table 1: Requirements and Justifications
ETS 300 607-1 Description TBR Justification TD Cat Test
Item Cat
14.4.3 Co channel rejection - Non compliance in this area may
g
TCH/HS (SID frames) impair speech quality.
30.1 Sending sensitivity / If this requirement is not met, the MS g
frequency response will not be able to produce a
reasonable speech intelligibility.
30.2 Sending loudness rating If this requirement is not met, the MS g
will not be able to produce a
reasonable speech intelligibility.
30.3 Receiving sensitivity / If this requirement is not met, the MS g
frequency response will not be able to produce a
reasonable speech intelligibility.
30.4 Receiving loudness rating If this requirement is not met, the MS g
will not be able to produce a
reasonable speech intelligibility.
30.5.1 Side Tone Masking Rating If this requirement is not met, the MS g
(STMR) will not be able to produce a
reasonable speech intelligibility.
30.5.2 Listener Side Tone Rating If this requirement is not met, the MS g X
(LSTR) will not be able to produce a
reasonable speech intelligibility.
30.6.1 Telephone acoustic coupling If this requirement is not met, the MS g
loss (TAL) - Echo loss (EL) will not be able to produce a
reasonable speech intelligibility.
30.6.2 Telephone acoustic coupling If this requirement is not met, the MS g
loss (TAL) - Stability margin will not be able to produce a
reasonable speech intelligibility.
30.7.1 Distortion - Sending If this requirement is not met, the MS g
will not
...