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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PSIST TBR 020:2000

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SIST TBR 020:2000 is a Slovenian standard published by SIST, identical to TBR 020 Edition 3. It specifies attachment requirements for GSM mobile stations in Phase 2, focused on telephony (speech) for GSM900 terminal equipment that connects to a public telecommunications network.

The document is built around conformance testing: it states what has to be checked, which ETS 300 607-1 items are used for the tests, and how the results are justified against the Terminal Directive.

What does SIST TBR 020:2000 specify?

SIST TBR 020:2000 specifies technical requirements for GSM Telephony (speech) on Phase 2 GSM900 mobile stations. It is aimed at terminal equipment and approval testing for speech transmission over the public telecommunications network.

The scope is narrow and practical: it covers 900 MHz operation with 200 kHz channel separation, constant envelope modulation, and TDMA traffic channels. It also states that measurement uncertainty is handled as described in ETS 300 607-1.

The document is organized into four clauses and one normative annex:

PartWhat it covers
Clause 1Scope, including the GSM900 speech focus and exclusions
Clause 2Normative references
Clause 3Abbreviations
Clause 4Requirements and their justification against the Terminal Directive
Annex ATBR Requirement Table, including static and dynamic proformas

The scope also makes clear what is outside this TBR. It covers Article 4g of the Terminal Directive, while Articles 4d, 4e and 4f are covered by TBR 19. It states that there are no electromagnetic compatibility technical requirements under Article 4c in this TBR.

What are the key requirements of SIST TBR 020:2000?

SIST TBR 020:2000 ties each essential requirement to a specific test item in ETS 300 607-1 and gives a short justification for why that test matters. In practice, this lets a manufacturer or test lab map each speech-related function to a conformance check.

Speech quality and audio performance

Clause 4 includes requirements for sending and receiving sensitivity, loudness ratings, side tone behavior, telephone acoustic coupling loss, and sending distortion. These checks matter because they affect how clearly speech is reproduced at both ends of the call and whether sidetone or coupling problems make the handset unpleasant or hard to use.

The table also includes co-channel rejection for TCH/HS (SID frames). This matters because interference handling affects speech quality on the radio link.

Speech transcoding and DTX

Clause 4 requires testing of speech transcoding functions for both Full Rate and Half Rate operation. It also includes receiver and transmitter DTX (Discontinuous Transmission) functions.

In practice, these checks verify that speech coding and DTX behave correctly over the network, so interworking via the public network is maintained and speech clipping or degraded intelligibility does not occur.

Delay performance

Clause 4 includes several delay-related items for Full Rate and Half Rate speech channels, covering downlink and uplink processing delay and coding delay. These requirements matter because excessive delay increases the total circuit delay experienced by users.

Conditional application

Annex A shows that some requirements are conditional on the declared equipment features. For example, Half Rate speech items are tied to support for Half Rate Speech, and handset-specific speech items are tied to support for a speech handset. That means test labs first record what the mobile station supports, then apply only the relevant tests.

What terms does SIST TBR 020:2000 define?

  • CTR - Common Technical Regulations; a regulatory family that can add requirements depending on the equipment function.
  • DTX - Discontinuous Transmission; a mechanism that affects how speech is transmitted when there is no active speech.
  • EL - Echo Loss; a measure used in telephone acoustic coupling loss requirements.
  • MMI - Man Machine Interface; the user interface whose transparency is checked in some delay-related tests.
  • MS - GSM Mobile Station; the mobile station equipment covered by the TBR.
  • TCH - Traffic CHannel; the radio channel used to carry traffic.
  • TCH/FS - Full rate Traffic CHannel for Speech; the full-rate speech traffic channel.
  • TCH/HS - Half rate Traffic CHannel for Speech; the half-rate speech traffic channel.
  • TDMA - Time Division Multiple Access; the access principle used for traffic channels in this system.

Who uses SIST TBR 020:2000?

SIST TBR 020:2000 is used by GSM terminal manufacturers, test laboratories, approval bodies, and quality teams that need to assess speech-capable mobile stations. It is relevant when preparing conformance evidence for terminal equipment that connects to a public telecommunications network.

It also applies to active accessories when they modify terminal performance in a way that affects compliance with essential requirements. That makes it useful for product qualification decisions, test planning, and approval documentation.

Which standards are used with SIST TBR 020:2000?

ReferenceWhat it contributes
Terminal Directive 91/263/EECRegulatory basis for the essential requirements addressed by this TBR
ETS 300 607-1 (GSM 11.10-1)Conformance test suite and the referenced test items for each requirement
TBR 19 Edition 4Attachment requirements for GSM mobile stations, access-related coverage
ETS 300 540 (GSM 03.50)Transmission planning aspects of the speech service
ETS 300 504 Edition 3 (GSM 02.06)Types of Mobile Stations (MS), used in the static requirement table

What does the SIST TBR 020:2000 document contain?

The document contains a requirement table in Clause 4 that pairs each speech-related requirement with an ETS 300 607-1 item number, a short description, a justification linked to the Terminal Directive, and a test category. It also explains which entries are mandatory, conditional, optional, not applicable, or excluded.

Annex A is a proforma-based TBR Requirement Table with static and dynamic parts. It defines how manufacturers record support choices, how conditional logic is applied, and how the correct test cases are selected for a specific mobile station implementation.

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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
...