SIST ETS 300 906 E2:2003
(Main)Digital cellular telecommunications system (Phase 2+) (GSM); Mobile Station (MS) features (GSM 02.07 version 5.3.2)
- Abstract
This ETS is to defines mobile station features and classifies them according to their type and whether they are mandatory or optional. The MS features detailed in this Specification do not represent an exhaustive list. Those MS features which are subject to Type Approval are described in GSM 11.10.
- Status
- Published
- Publication Date
- 30-Nov-2003
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Dec-2003
- Due Date
- 01-Dec-2003
- Completion Date
- 01-Dec-2003
SIST ETS 300 906 E2:2003 is the Slovenian adoption of ETS 300 906 Edition 2, an ETSI European Telecommunications Standard for Digital cellular telecommunications system (Phase 2+) (GSM) mobile station features. It defines which Mobile Station (MS) features are covered, how they are grouped, and whether they are mandatory or optional for manufacturers, operators and type-approval use.
What does SIST ETS 300 906 E2:2003 specify?
SIST ETS 300 906 E2:2003 specifies MS features for GSM Phase 2+ and classifies them by feature type and by implementation status. The document also points readers to GSM 11.10 for features that are subject to Type Approval.
The document is organized into a short front section, clause 1 with scope, normative references, definitions and abbreviations, clause 2 with implementation requirements, and four annexes.
| Annex | What it covers |
|---|---|
| Annex A | Automatic calling repeat call attempt restrictions |
| Annex B | Descriptions of Mobile Station features |
| Annex C | GSM-MoU ID1 SIM layout |
| Annex D | Change history |
Annex B is the main technical reference for the feature descriptions used in Tables 1, 2 and 3.
What are the key requirements of SIST ETS 300 906 E2:2003?
SIST ETS 300 906 E2:2003 requires manufacturers to classify MS features as mandatory or optional, and to implement them in line with the relevant GSM specifications. In practice, this means the feature set has to follow the GSM architecture, not just the product design chosen by the manufacturer.
Classification and implementation rules
Clause 2 divides MS features into basic, supplementary and additional features, and marks them in the tables as mandatory (M) or optional (O). Features marked M* are mandatory when a human interface is provided, which matters for equipment driven by external equipment rather than a user keypad or display.
The same clause says the listed features are not an exhaustive list. Additional MS features are permitted if they do not affect the mandatory air interface requirements, so product designers can add functions without changing the core GSM behavior.
Clause 2 also states that, unless otherwise stated, a feature supported by the Subscriber Identity Module (SIM) takes priority over the same feature supported by the Mobile Equipment (ME). This is important when the same control or numbering information exists in both places.
Core basic features
Table 1 lists the basic MS features, including display of called number, indication of call progress signals, country/PLMN indication, country/PLMN selection, IMEI, short message support, short message overflow indication, emergency calls, DTMF, subscription identity management, support of encryption A5/1 and A5/2, Short Message Service Cell Broadcast, ciphering indicator, and several interface or access functions.
For users and testers, the practical point is that these items define the baseline behavior of a GSM MS. For example, the MS must be able to present a called number before setup, indicate call progress, and support emergency calling where telephony is supported.
Supplementary services and additional features
Table 2 makes support of supplementary services mandatory only for Call Barring and Call Forwarding, while other supplementary services are optional. It also allows Unstructured SS Data support as an option, with functional signalling required where a supplementary service defines it.
Table 3 lists additional features such as abbreviated dialling, fixed number dialling, barring of dialled numbers, DTMF control digits separator, selection of directory number in messages, Last Numbers Dialled, ME-SIM lock, and Service Dialling Numbers. These are user-control features that affect how numbers are stored, selected or restricted in the SIM and the MS.
Autocalling, ciphering and SIM-related controls
Annex A gives the repeat-call restriction rules for automatic calling or repeated call attempts from peripheral equipment or the MT itself. It groups call failures into busy, temporary unobtainable and permanent or long-term unobtainable categories, then sets the repeat-call behavior, blacklisting logic, timing between retries and minimum blacklist size. In practice, this limits automated redial patterns and makes the MS reject too-frequent retries.
Annex B describes features such as the IMEI, short message indication and acknowledgement, Service Provider Indication, Network Identity and Timezone, and Ciphering Indicator. The ciphering indicator feature is especially relevant because it tells the user when a connection is not enciphered, while leaving ciphering itself unchanged.
Annex C gives the GSM-MoU ID1 SIM layout, including the physical orientation marking. That matters for SIM card handling and product design.
What terms does SIST ETS 300 906 E2:2003 define?
SIST ETS 300 906 E2:2003 defines several core GSM terms that are used throughout the feature tables and annexes.
- Mobile Station (MS) - The mobile terminal whose features are being specified.
- Mobile Equipment (ME) - The equipment side of the MS, distinct from the SIM, used for functions such as display, keypad and call handling.
- Subscriber Identity Module (SIM) - The module that contains subscriber identity and related data, and can control features such as dialing restrictions and roaming information.
- Public Land Mobile Network (PLMN) - The GSM network that the MS registers on and uses for service.
- International Mobile Station Equipment Identity (IMEI) - The unique equipment identity transmitted on request from the PLMN.
- Dual Tone Multi Frequency (DTMF) - The tone signaling method used during speech or speech-phase calls.
- Fixed Dialling Numbers (FDN) - SIM-stored numbers that are allowed when fixed dialling mode is enabled.
Who uses SIST ETS 300 906 E2:2003?
SIST ETS 300 906 E2:2003 is used by MS and ME manufacturers, SIM and terminal designers, network operators, and type-approval teams. Manufacturers use it to decide which features must be built in, how the SIM and ME are expected to interact, and which behaviors are mandatory.
Network operators use it when they control SIM-based functions such as Service Provider Indication, ME-SIM lock, barring of dialled numbers, and fixed dialling. Conformity and approval teams use it to check whether an MS feature follows the GSM specifications and the Type Approval path referenced in GSM 11.10. Buyers and technical evaluators can also use it to compare devices by feature class, especially for dialing control, messaging, roaming support and emergency call behavior.
What changed in SIST ETS 300 906 E2:2003 from the previous edition?
Annex D records two changes for this second edition: support for wild cards in fixed dialling was addressed, and mandatory ciphering indication was introduced. The history section also identifies this document as the second edition of the ETS.
Which standards are used with SIST ETS 300 906 E2:2003?
SIST ETS 300 906 E2:2003 relies on several GSM specifications that supply definitions, procedures and interfaces.
- GSM 01.04 - Provides abbreviations and acronyms used in the ETS.
- GSM 02.03 - Covers teleservices supported by a GSM PLMN and is used for short messages, emergency calls and DTMF-related behavior.
- GSM 02.11 - Provides service accessibility procedures, including PLMN selection.
- GSM 02.17 - Gives functional characteristics for SIMs and is used for SIM handling and stored data.
- GSM 02.30 - Covers the MMI of the MS and supports several user-interface features.
- GSM 02.40 - Describes call progress indications.
- GSM 03.03 - Covers numbering, addressing and identification, including IMEI-related context.
- GSM 03.14 - Covers DTMF signaling over the GSM system.
- GSM 04.08 - Provides layer 3 procedures used for call setup and retry timing.
- GSM 11.10 - Gives the MS conformity specification and Type Approval link.
- GSM 11.11 - Defines the SIM-ME interface and SIM data handling.
- GSM 02.42 - Supports the Network Identity and Timezone feature.
What does the SIST ETS 300 906 E2:2003 document contain?
SIST ETS 300 906 E2:2003 contains three feature tables, feature descriptions in Annex B, a repeat-call restriction procedure in Annex A, a SIM layout figure in Annex C, and a change history in Annex D. The tables separate basic, supplementary and additional MS features and mark each one as mandatory or optional.
Annex B explains how the listed features behave in practice, including dialing, short messages, roaming indications, encryption indication, barred and fixed numbers, and service dialling numbers. Annex A provides the decision logic for automatic redial attempts, including category-based retry limits and blacklist handling.
The document also includes a keypad illustration in the description of keypad use, and references to message, dialing and SIM procedures that are used for implementation, testing and approval.
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Frequently Asked Questions
SIST ETS 300 906 E2:2003 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Digital cellular telecommunications system (Phase 2+) (GSM); Mobile Station (MS) features (GSM 02.07 version 5.3.2)". This standard covers: This ETS is to defines mobile station features and classifies them according to their type and whether they are mandatory or optional. The MS features detailed in this Specification do not represent an exhaustive list. Those MS features which are subject to Type Approval are described in GSM 11.10.
This ETS is to defines mobile station features and classifies them according to their type and whether they are mandatory or optional. The MS features detailed in this Specification do not represent an exhaustive list. Those MS features which are subject to Type Approval are described in GSM 11.10.
SIST ETS 300 906 E2:2003 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 ETS 300 906 E2:2003 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
01-december-2003
'LJLWDOQLFHOLþQLWHOHNRPXQLNDFLMVNLVLVWHPID]D±/DVWQRVWLPRELOQLKSRVWDM
06*60UD]OLþLFD
Digital cellular telecommunications system (Phase 2+) (GSM); Mobile Station (MS)
features (GSM 02.07 version 5.3.2)
Ta slovenski standard je istoveten z: ETS 300 906 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 300 906
TELECOMMUNICATION December 1997
STANDARD Second Edition
Source: SMG Reference: RE/SMG-010207QR2
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+);
Mobile Stations (MS) features
(GSM 02.07 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: 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.
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ETS 300 906 (GSM 02.07 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 300 906 (GSM 02.07 version 5.3.2): December 1997
Contents
Foreword .5
1 Scope .7
1.1 Normative references .7
1.2 Definitions and abbreviations.8
2 Requirements for implementing MS features.8
Annex A (normative): Automatic calling repeat call attempt restrictions .11
Annex B (normative): Description of Mobile Station features.13
B.1.1 Display of called number.13
B.1.2 Indication of call progress signals.13
B.1.3 Country/PLMN indication .13
B.1.4 Country/PLMN selection .13
B.1.5 Keypad.13
B.1.6 IMEI.14
B.1.7 Short message indication and acknowledgement .14
B.1.8 Short message overflow indication .14
B.1.9 DTE/DCE interface .14
B.1.10 ISDN "S" terminal interface.14
B.1.11 International access function .14
B.1.12 Service Indicator (SI) .14
B.1.13 Autocalling restriction capabilities.14
B.1.14 Emergency Calls capabilities.14
B.1.15 Dual Tone Multi Frequency (DTMF) .15
B.1.16 Subscription identity management.15
B.1.17 On/Off switch .15
B.1.18 Sub-Address .15
B.1.19 Support of encryption A5/1 and A5/2 .15
B.1.20 Short Message Service Cell Broadcast .15
B.1.21 Short Message Service Cell Broadcast DRX.15
B.1.22 Service Provider Indication .15
B.1.23 Support of the extended Short message cell broadcast channel .16
B.1.24 Support of Additional Call Set-up MMI Procedures .16
B.1.25 Network Identity and Timezone .16
B.1.26 Ciphering Indicator.16
B.2.1 Support of supplementary services .16
B.3.1 Abbreviated dialling.16
B.3.2 Fixed number dialling.17
B.3.3 Barring of Dialled Numbers.17
B.3.4 DTMF control digits separator .18
B.3.5 Selection of directory number in messages.19
B.3.6 Last Numbers Dialled (LND).19
B.3.7 ME-SIM lock.19
B.3.8 Service Dialling Numbers.19
Annex C (normative): GSM-MoU ID1 SIM layout .20
Annex D (informative): Change history .21
History.22
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ETS 300 906 (GSM 02.07 version 5.3.2): December 1997
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ETS 300 906 (GSM 02.07 version 5.3.2): December 1997
Foreword
This second edition European Telecommunications Standard (ETS) has been produced by the Special
Mobile Group (SMG) of the European Telecommunications Standards Institute (ETSI).
This ETS specifies Mobile Station features within the digital cellular telecommunications system
(Phase 2+).
This ETS is a GSM technical specification version 5, which contains GSM Phase 2+
enhancements/features to the version 4 GSM technical specification.
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 300 906 (GSM 02.07 version 5.3.2): December 1997
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ETS 300 906 (GSM 02.07 version 5.3.2): December 1997
1 Scope
This ETS defines Mobile Station (MS) features and to classifies them according to their type and whether
they are mandatory or optional. The MS features detailed in this ETS do not represent an exhaustive list.
Those MS features which are subject to Type Approval are described in GSM 11.10 [13].
1.1 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 02.03 (ETS 300 905): "Digital cellular telecommunications system
(Phase 2+); Teleservices 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 02.11 (ETS 300 921): "Digital cellular telecommunications system; Service
accessibility".
[5] GSM 02.16: "Digital cellular telecommunications system; International Mobile
station Equipment Identities (IMEI)".
[6] GSM 02.17 (ETS 300 922): "Digital cellular telecommunications system;
Subscriber identity modules; Functional characteristics".
[7] GSM 02.30 (ETS 300 907): "Digital cellular telecommunications system
(Phase 2+); Man-Machine Interface (MMI) of the Mobile Station (MS)".
[8] GSM 02.40: "Digital cellular telecommunications system; Procedures for call
progress indications".
[9] GSM 02.90: "Digital cellular telecommunications system (Phase 2+); Stage 1
description of Unstructured Supplementary Service Data (USSD)".
[10] GSM 03.03 (ETS 300 927): "Digital cellular telecommunications system
(Phase 2+); Numbering, addressing and identification".
[11] GSM 03.14: "Digital cellular telecommunications system; Support of Dual Tone
Multi-Frequency signalling (DTMF) via the GSM system".
[12] GSM 04.08 (ETS 300 940): "Digital cellular telecommunications system
(Phase 2+); Mobile radio interface layer 3 specification".
[13] GSM 11.10 (ETS 300 607): "Digital cellular telecommunications system
(Phase 2+); Mobile Station (MS) conformity specification".
[14] GSM 11.11 (ETS 300 977): "Digital cellular telecommunications system
(Phase 2+); Specification of the Subscriber Identity Module - Mobile Equipment
(SIM - ME) interface".
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ETS 300 906 (GSM 02.07 version 5.3.2): December 1997
1.2 Definitions and abbreviations
For the purposes of this ETS, the following definitions apply:
An MS feature is defined as a piece of equipment of function which directly relates to the operation of the
MS. On the basis of this, three categories of features can be distinguished: basic, supplementary and
additional features.
Basic MS features: A basic MS feature is directly related to the operation of basic telecommunication
services (e.g. key-pad function).
Supplementary MS features: A supplementary MS feature is directly related to the operation of
supplementary services (e.g. display of calling line number).
Additional MS features: An additional MS feature is a feature which is neither a basic nor a
supplementary feature (e.g. abbreviated dialling).
Additional MS features and supplementary services may be used independently according to the choice of
subscribers/users (e.g. barring of outgoing calls). Features not directly relevant to the use as a Mobile
Station are permitted, provided they do not interfere with the performance of the MS (e.g. a clock).
Abbreviations used in this ETS are listed in GSM 01.04 [1].
2 Requirements for implementing MS features
MS features are qualified as mandatory or optional. Mandatory features have to be implemented as long
as they are relevant to the MS type, and will be subject to Type Approval when applied according to
GSM 11.10 [13]. Whether or not an optional feature is implemented is left to the manufacturers' discretion.
The method of implementation of all MS features must be done in accordance with the appropriate
GSM specifications. For all present and future MS features, manufacturers have the responsibility to
ensure that the MS features will neither conflict with the air interface nor cause any interference to the
network or any other MS or its own MS, and these requirements shall be recognized during the Type
Approval process.
In the following tables 1, 2 and 3 the basic, supplementary and additional MS features are listed.
Mandatory features are marked by "M". Optional features are marked by "0".
Additional MS features not listed in table 3 are permitted without the requirement for this table to be
amended, provided that these new features do not affect the mandatory air interface requirements.
Unless otherwise stated for a particular feature, the feature supported by the Subscriber Identity Module
(SIM) takes priority over the same feature supported by the Mobile Equipment (ME).
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ETS 300 906 (GSM 02.07 version 5.3.2): December 1997
Table 1: Basic MS features
Name Mandatory (M)
Optional (O)
1.1 Display of Called Number M*
1.2 Indication of Call Progress Signals M*
1.3 Country/PLMN Indication M*
1.4 Country/PLMN Selection M
1.5 Keypad O (note 1)
1.6 IMEI M
1.7 Short Message M (note 4)
1.8 Short Message Overflow Indication M
1.9 DTE/DCE Interface O
1.10 ISDN "S" Interface O
1.11 International Access Function ("+" key) O (note 1)
1.12 Service Indicator M*
1.13 Autocalling restriction capabilities (note 2)
1.14 Emergency Calls capabilities M (note 3)
1.15 Dual Tone Multi Frequency function (DTMF) M (note 5)
1.16 Subscription Identity Management M
1.17 On/Off switch O
1.18 Subaddress O
1.19 Support of Encryption A5/1 and A5/2 M
1.20 Short Message Service Cell Broadcast M
1.21 Short Message Service Cell Broadcast DRX O
1.22 Service Provider Indication O
1.23 Support of the extended SMS CB channel O
1.24 Support of Additional Call Set-up MMI Procedures O
1.25 Network Identity and Timezone O
1.26 Ciphering Indicator M*
Descriptions are given in annex B.
* Mandatory where a human interface is provided, i.e. may be in-appropriate for MS driven by
external equipment.
NOTE 1: The physical means of entering the characters 0-9, +, * and # may be keypad, voice
input device, DTE or others, but it is mandatory that there shall be the means to enter
this information.
NOTE 2: MTs with capabilities for Autocalling, or to which call initiating equipment can be
connected via the "R" or "S" interface, shall restrict repeated call attempts according to
the procedures described in annex A.
NOTE 3: Emergency calls shall be possible according to Teleservice 12 (see GSM 02.03 [2] and
GSM 02.30 [7]). This feature is only required to be provided by ME supporting
Telephony.
NOTE 4: Support of reception by the ME and storage of SMS MT in the SIM is mandatory, but
its display is optional. Reception and storage of a message shall be indicated by the
MS.
NOTE 5: The use of DTMF is only mandatory when the speech teleservice is being used or
during the speech phase of alternate speech/data and alternate speech/facsimile
teleservices.
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ETS 300 906 (GSM 02.07 version 5.3.2): December 1997
Table 2: Supplementary MS features
Name Mandatory (M)
Optional (O)
2.1 Control of Supplementary Services (note 1)
NOTE 1: See annex B, subclause B.2.1.
Descriptions are given in annex B to GSM 02.07.
Table 3: Additional MS features
Name Mandatory (M)
Optional (O)
3.1 Abbreviated Dialling O
3.2 Fixed Number Dialling O
3.3 Barring of Dialled Numbers O
3.4 DTMF Control Digits Separator O
3.5 Selection of Directory No in Messages O
3.6 Last Numbers Dialled O
3.7 ME-SIM lock O
3.8 Service Dialling Numbers O
Descriptions are given in the appendix to GSM 02.07.
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ETS 300 906 (GSM 02.07 version 5.3.2): December 1997
Annex A (normative): Automatic calling repeat call attempt restrictions
Call set up attempts referred to in this annex are assumed to be initiated from peripheral equipment or
automatically from the MT itself.
A repeat call attempt may be made when a call attempt is unsuccessful for the reasons listed below (as
defined in GSM 04.08 [12]).
These reasons are classified in three major categories:
1) "Busy destination":
Cause number 17 User busy.
2) "Unobtainable destination - temporary":
Cause number 18 No user responding;
19 User alerting, no answer;
27 Destination out of order;
34 No circuit/channel available;
41 Temporary failure;
42 Switching Equipment congestion;
44 Requested circuit/channel not available;
47 Resources unavailable, unspecified.
3) "Unobtainable destination - permanent/long term":
Cause number 1 Unassigned (unallocated) number;
3 No route to destination;
22 Number changed;
28 Invalid number format (uncompleted number);
38 Network out of order.
NOTE 1: Optionally, it is allowed to implement cause number 27 in Category 3, instead of
Category 2, as this is desirable already in Phase 1.
The table below describes a repeat call restriction pattern to any B number. This pattern defines a
maximum number (n) of call repeat attempts; when this number n is reached, the associated B number
shall be blacklisted by the MT until a manual re-set at the MT is performed in respect of that B number.
When a repeat attempt to anyone B number fails, or is blacklisted, this does not prevent calls being made
to other B numbers.
For the categories 1 and 2 above, n shall be 10; for category 3, n shall be 1.
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ETS 300 906 (GSM 02.07 version 5.3.2): December 1997
call attempts Minimum duration between Call
attempt
Initial call attempt -
1st repeat attempt 5 sec
2nd repeat attempt 1 min
3rd repeat attempt 1 min
4th repeat attempt 1 min
5th repeat attempt 3 min
.
.
nth repeat attempt 3 min
The number of B numbers that can be held in the blacklist is at the manufacturers discretion but there
shall be at least 8. However, when the blacklist is full the MT shall prohibit further automatic call attempts
to any one number until the blacklist is manually cleared at the MT in respect of one or more B numbers.
When automatic calling apparatus is connected to an MT1 or MT2, or where an MTO is capable of auto-
calling, then the MT shall process the call requests in accordance with the sequence of repeat attempts
defined above, i.e. requests for repeat attempts with less than the minimum allowed duration between
them shall be rejected by the MT.
A successful call attempt to a number which has been subject to the call restrictions shown above (i.e. an
unsuccessful call set up attempt has previously occurred) shall reset the "counter" for that number.
The "counter" for an unsuccessfully attempted B number shall be maintained in 24 hours or until the MT is
switched off.
The automatic calling repeat call attempt restrictions apply to speech and data services.
NOTE 2: The restrictions only apply to unsuccessful Call Control activity, not to Radio Resource
Management or to Mobility Management, so multiple attempts at radio channel access
are not limited by this mechanism.
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ETS 300 906 (GSM 02.07 version 5.3.2): December 1997
Annex B (normative): Description of Mobile Station features
The section numbers refer to the items in tables 1, 2 and 3. The implementation (optional or mandatory) is
shown in these tables.
B.1.1 Display of called number
This feature enables the caller to check before call setup whether the selected number is correct.
B.1.2 Indication of call progress signals
Indications shall be given such as tones, recorded
...



