SIST ETS 300 941 E1:2003

Digital cellular telecommunications system; Mobile radio interface layer 3; Supplementary services specification; General aspects (GSM 04.10 version 5.0.1)

In this ETS the general aspects of the specification of supplementary services at the layer 3 radio interface are given. GSM 04.8x and 04.9x-series specify the procedures used at the radio interface (reference point Um as defined inGSM 04.02) for normal operation, registration, erasure, activation, deactivation, invocation and interrogation of supplementary services. Provision and withdrawal of supplementary services is an administrative matter between the mobile subscriber and the service provider and cause no signalling on the radio interface. GSM 04.08 and GSM 04.80 specifies the formats and coding for the supplementary services. Definitions and descriptions of supplementary services are given in GSM 02.04 and GSM 02.8x and 02.9x-series. Technical realization of supplementary services is described in GSM 03.11 and GSM 03.8x and 03.9x-series. The procedures for Call Control, Mobility Management and Radio Resource management at the layer 3 radio interface are defined in GSM 04.07 and GSM 04.08.

Digitalni celični telekomunikacijski sistem – Tretja plast vmesnika za mobilni radio – Specifikacija dopolnilnih storitev – Splošni vidiki (GSM 04.10, različica 5.0.1)

General Information

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.070.50 - Global System for Mobile Communication (GSM)
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI ETS 300 941 ed.1 (1997-05) - Digital cellular telecommunications system; Mobile radio interface layer 3; Supplementary services specification; General aspects (GSM 04.10 version 5.0.1)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST ETS 300 941 E1:2003
01-december-2003
'LJLWDOQLFHOLþQLWHOHNRPXQLNDFLMVNLVLVWHP±7UHWMDSODVWYPHVQLND]DPRELOQLUDGLR
±6SHFLILNDFLMDGRSROQLOQLKVWRULWHY±6SORãQLYLGLNL*60UD]OLþLFD
Digital cellular telecommunications system; Mobile radio interface layer 3;
Supplementary services specification; General aspects (GSM 04.10 version 5.0.1)
Ta slovenski standard je istoveten z: ETS 300 941 Edition 1
ICS:
33.070.50 Globalni sistem za mobilno Global System for Mobile
telekomunikacijo (GSM) Communication (GSM)
SIST ETS 300 941 E1:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 941 E1:2003

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SIST ETS 300 941 E1:2003
EUROPEAN ETS 300 941
TELECOMMUNICATION May 1997
STANDARD
Source: ETSI TC-SMG Reference: DE/SMG-030410Q
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;
Mobile radio interface layer 3
Supplementary services specification;
General aspects
(GSM 04.10 version 5.0.1)
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: [e-mail]
Tel.: [phone] - Fax: [phone]
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright
and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1997. All rights reserved.

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ETS 300 941 (GSM 04.10 version 5.0.1): May 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 300 941 (GSM 04.10 version 5.0.1): May 1997
Contents
Foreword .5
1 Scope .7
1.1 Normative references .7
1.2 Abbreviations .10
2 Generic procedures for the control of supplementary services.11
2.1 Overview of the generic protocol and its scope .11
2.2 Functional procedures for the control of supplementary services .11
2.2.1 General.11
2.2.2 Separate Messages Category.12
2.2.3 Common Information Element Category.12
2.2.4 Call related supplementary service procedures .12
2.2.4.1 Supplementary service procedures at call establishment
or call clearing.12
2.2.4.2 Supplementary service procedures during the call.12
2.2.4.3 Handling of protocol errors in call related SS procedures .13
2.2.4.4 Handling of other errors in call related SS procedures.13
2.2.5 Call independent supplementary service procedures .14
2.2.5.1 Introduction.14
2.2.5.2 Handling of protocol errors in call independent SS
procedures.14
2.2.5.3 Handling of other errors in call independent SS
procedures.14
2.2.6 Multiple supplementary service invocations .15
2.2.6.1 Call related supplementary service procedures .15
2.2.6.2 Call independent supplementary service procedures.15
2.2.7 Recovery procedures .15
2.2.7.1 Call related supplementary service recovery procedures.15
2.2.7.2 Call independent supplementary service recovery
procedures.15
2.2.8 Generic protocol error handling for the component part of supplementary
services operations .16
2.2.8.1 Call related component errors .16
2.2.8.2 Call independent component errors .16
2.2.8.2.1 Single component errors.16
2.2.8.2.2 Multiple component errors .16
3 Supplementary service support procedures.17
3.1 General .17
3.2 Supplementary service support establishment .17
3.2.1 Supplementary service support establishment at the originating side .17
3.2.2 Supplementary service support establishment at the terminating side .17
3.3 Supplementary service support information transfer phase .17
3.4 Supplementary service support release.17
3.5 Recovery procedures.17
3.6 Message flow (single operation example) .18
3.6.1 Mobile station initiated supplementary service transaction .18
3.6.2 Network initiated supplementary service transaction .19
3.7 Handling of unknown, unforeseen, and erroneous protocol data .20
3.7.1 General.20
3.7.2 Message too short.20
3.7.3 Unknown or unforeseen transaction identifier.20
3.7.4 Unknown or unforeseen message type.21
3.7.5 Non-semantical mandatory Information Element Error.21
3.7.6 Unknown and Unforeseen IEs in the non-imperative part.21
3.7.6.1 IEIs unknown in the message.21

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3.7.6.2 Out of sequence IEs . 21
3.7.6.3 Repeated IEs . 22
3.7.7 Non-imperative message part errors. 22
3.7.7.1 Syntactically incorrect optional IEs (other than Facility). 22
3.7.7.2 Conditional IE errors . 22
4 Password management. 23
4.1 Password check . 23
4.1.1 Successful procedure . 23
4.1.2 Error cases . 23
4.2 Password registration.24
4.2.1 Successful procedure . 24
4.2.2 Error cases . 24
4.3 Cross phase compatibility . 25
5 Supplementary service cross phase compatibility. 26
5.1 Cross phase, or cross protocol version, interworking . 26
5.2 Objectives. 26
5.3 Supplementary service compatibility philosophy. 26
5.4 Compatibility mechanisms . 27
5.4.1 SS screening indicator. 27
5.4.2 SS version indicator. 27
5.4.3 Protocol extension mechanism. 27
5.5 SS compatibility procedures. 28
5.5.1 Screening indicator procedures. 28
5.5.1.1 MS procedure. 28
5.5.1.2 Network procedure. 28
5.5.2 SS version indicator procedures. 28
5.5.2.1 MS procedure. 28
5.5.2.2 Network procedure. 29
5.5.2.2.1 Call independent SS activity. 29
5.5.2.2.2 Call related SS activity. 29
5.5.3 Extension mechanism procedures . 29
5.5.4 SS version indicator - MAP context interworking. 30
5.5.4.1 Call independent interworking. 30
5.5.4.2 Call related interworking. 30
5.6 Development of future protocol versions. 30
6 Forward Check SS Indication . 31
Annex A (normative): Notation used for stage 3 description of supplementary services . 32
A.1 General structure of the SS stage 3 diagrams .32
A.1.1 Exceptional release procedures. 32
A.2 Messages used to transport operations . 33
A.3 Contents of messages. 33
Annex B (informative): Status of Technical Specification GSM 04.10. 34
History. 35

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ETS 300 941 (GSM 04.10 version 5.0.1): May 1997
Foreword
This European Telecommunication Standard (ETS) has been produced by the Special Mobile Group
(SMG) Technical Committee (TC) of the European Telecommunications Standards Institute (ETSI).
This ETS defines the general aspects of the " of supplementary services at the layer 3 radio interface
within the digital cellular telecommunications system.
This ETS is a GSM Technical Specification version 5.
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 rules.
Transposition dates
Date of adoption: 18 April 1997
Date of latest announcement of this ETS (doa): 31 August 1997
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 28 February 1998
Date of withdrawal of any conflicting National Standard (dow): 28 February 1998

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1 Scope
In this European Telecommunication Standard (ETS) the general aspects of the specification of
supplementary services at the layer 3 radio interface are given.
GSM 04.8x and 04.9x-series specify the procedures used at the radio interface (reference point Um as
defined in GSM 04.02) for normal operation, registration, erasure, activation, deactivation, invocation and
interrogation of supplementary services. Provision and withdrawal of supplementary services is an
administrative matter between the mobile subscriber and the service provider and cause no signalling on
the radio interface.
GSM 04.08 and GSM 04.80 specifies the formats and coding for the supplementary services.
Definitions and descriptions of supplementary services are given in GSM 02.04 and GSM 02.8x and
02.9x-series.
Technical realization of supplementary services is described in GSM 03.11 and GSM 03.8x and
03.9x-series.
The procedures for Call Control, Mobility Management and Radio Resource management at the layer 3
radio interface are defined in GSM 04.07 and GSM 04.08.
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 02.04 (ETS 300 918): "Digital cellular telecommunications system
(Phase 2+); General on Supplementary Services".
[3] GSM 02.81: "Digital cellular telecommunications system; Line identification
supplementary services - Stage 1".
[4] GSM 02.82: "Digital cellular telecommunications system (Phase 2+); Call
Forwarding (CF) supplementary services - Stage 1".
[5] GSM 02.83: "Digital cellular telecommunications system; Call Waiting (CW) and
Call Hold (HOLD) Supplementary Services - Stage 1".
[6] GSM 02.84: "Digital cellular telecommunications system; MultiParty (MPTY)
Supplementary Services - Stage 1".
[7] GSM 02.85: "Digital cellular telecommunications system; Closed User Group
(CUG) Supplementary Services - Stage 1".
[8] GSM 02.86: "Digital cellular telecommunications system; Advice of charge
(AoC) Supplementary Services - Stage 1".

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[9] GSM 02.88: "Digital cellular telecommunications system; Call Barring (CB)
Supplementary Services - Stage 1".
[10] GSM 02.90: "Digital cellular telecommunications system; Unstructured
Supplementary Service Data (USSD) - Stage 1".
[11] GSM 02.91: "Digital cellular telecommunications system (Phase 2+); Explicit
Call Transfer (ECT)".
[12] GSM 03.11 (ETS 300 928): "Digital cellular telecommunications system;
Technical realization of supplementary services".
[13] GSM 03.81: "Digital cellular telecommunications system; Line identification
supplementary services - Stage 2".
[14] GSM 03.82: "Digital cellular telecommunications system; Call Forwarding (CF)
supplementary services - Stage 2".
[15] GSM 03.83: "Digital cellular telecommunications system; Call Waiting (CW) and
Call Hold (HOLD) supplementary services - Stage 2".
[16] GSM 03.84: "Digital cellular telecommunications system; MultiParty (MPTY)
supplementary services - Stage 2".
[17] GSM 03.85: "Digital cellular telecommunications system; Closed User Group
(CUG) supplementary services - Stage 2".
[18] GSM 03.86 (ETS 300 935): "Digital cellular telecommunications system; Advice
of Charge (AoC) supplementary services - Stage 2".
[19] GSM 03.88: "Digital cellular telecommunications system; Call Barring (CB)
supplementary services - Stage 2".
[20] GSM 03.90: "Digital cellular telecommunications system; Unstructured
Supplementary Service Data (UUSD) - Stage 2".
[21] GSM 03.91: "Digital cellular telecommunications system (Phase 2+); Explicit
Call Transfer (ECT) supplementary service - Stage 2".
[22] GSM 04.02: "Digital cellular telecommunications system (Phase 2+); GSM
Public Land Mobile Network (PLMN) access reference configuration".
[23] GSM 04.03: "Digital cellular telecommunications system (Phase 2+); Mobile
Station - Base Stations system (MS - BSS) interface; Channel structures and
access capabilities".
[24] GSM 04.04 (ETS 300 936): "Digital cellular telecommunications system;
Layer 1; General requirements".
[25] GSM 04.05 (ETS 300 937): "Digital cellular telecommunications system; Data
Link (DL) layer; General aspects".
[26] GSM 04.06 (ETS 300 938): "Digital cellular telecommunications system
(Phase 2+); Mobile Station - Base Station System (MS - BSS) interface; Data
Link (DL) layer specification".

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[27] GSM 04.07 (ETS 300 939): "Digital cellular telecommunications system
(Phase 2+); Mobile radio interface signalling layer 3; General aspects".
[28] GSM 04.08 (ETS 300 940): "Digital cellular telecommunications system
(Phase 2+); Mobile radio interface layer 3 specification".
[27] GSM 04.80 (ETS 300 950): "Digital cellular telecommunications system
(Phase 2+); Mobile radio interface layer 3 supplementary services specification;
Formats and coding".
[28] GSM 04.81 (ETS 300 951): "Digital cellular telecommunications system; Line
identification supplementary services - Stage 3".
[29] GSM 04.82 (ETS 300 952): "Digital cellular telecommunications system; Call
Forwarding (CF) supplementary services - Stage 3".
[30] GSM 04.83 (ETS 300 953): "Digital cellular telecommunications system; Call
Waiting (CW) and Call Hold (HOLD) supplementary services - Stage 3".
[31] GSM 04.84 (ETS 300 954): "Digital cellular telecommunications system;
MultiParty (MPTY) supplementary services - Stage 3".
[32] GSM 04.85: "Digital cellular telecommunications system; Closed User Group
(CUG) supplementary services - Stage 3".
[33] GSM 04.86 (ETS 300 955): "Digital cellular telecommunications system; Advice
of Charge (AoC) supplementary services - Stage 3".
[34] GSM 04.88 (ETS 300 956): "Digital cellular telecommunications system; Call
Barring (CB) supplementary services - Stage 3".
[35] GSM 04.90 (ETS 300 957): "Digital cellular telecommunications system;
Unstructured Supplementary Service Data (USSD) - Stage 3".
[36] GSM 05.01: "Digital cellular telecommunications system (Phase 2+); Physical
layer on the radio path; General description".
[37] GSM 05.02 (ETS 300 908): "Digital cellular telecommunications system
(Phase 2+); Multiplexing and multiple access on the radio path".
[38] GSM 05.03 (ETS 300 909): "Digital cellular telecommunications system
(Phase 2+); Channel coding".
[39] GSM 05.04 (ETS 300 959): "Digital cellular telecommunications system;
Modulation".
[40] GSM 05.05 (ETS 300 910): "Digital cellular telecommunications system
(Phase 2+); Radio transmission and reception".
[41] GSM 05.08 (ETS 300 911): "Digital cellular telecommunications system
(Phase 2+); Radio subsystem link control".

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[42] GSM 05.10 (ETS 300 912): "Digital cellular telecommunications system
(Phase 2+); Radio subsystem synchronization".
[43] GSM 05.90 (ETR 357): "Digital cellular telecommunications system;
GSM Electro Magnetic Compatibility (EMC) considerations".
[44] GSM 09.02 (ETS 300 974): "Digital cellular telecommunications system
(Phase 2+); Mobile Application Part (MAP) specification".
[45] GSM 09.11: "Digital cellular telecommunications system (Phase 2+); Signalling
interworking for supplementary services".
[46] CCITT Recommendation Q.774 (White Book): "Specifications of Signalling
System No.7; Transaction capabilities procedures".
1.2 Abbreviations
Abbreviations used in this ETS are listed in GSM 01.04.

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2 Generic procedures for the control of supplementary services
2.1 Overview of the generic protocol and its scope
One generic protocol is defined for the control of supplementary services at the radio interface. This
protocol operates at layer 3 of the radio interface and assumes the use of layers 1 and 2 conform to
GSM 05-series and GSM 04.04, GSM 04.05 and GSM 04.06. The generic protocol uses the
acknowledged information transfer service available at the layer 2 - layer 3 interface.
The Functional protocol is based on the use of the Facility information element and the FACILITY
message as well as other specific functional messages specified in GSM 04.80.
Standardized services use a functional protocol. A transparent protocol is also provided. The functional
protocol requires the knowledge of the related supplementary service by the mobile equipment supporting
it. This facilitates mobile equipment operation without human intervention by defining semantics for the
protocol elements which the mobile equipment can process on its own.
2.2 Functional procedures for the control of supplementary services
2.2.1 General
This subclause specifies the functional signalling procedures for the control of supplementary services at
the radio interface.
The Functional protocol utilizes functions and services provided by GSM 04.08 basic call control
procedures and the functions of the data link layer as defined in GSM 04.06.
The defined procedures specify the basic methodology for the control (e.g. registration, erasure,
invocation, etc.) of supplementary services.
The first category, called the Separate Message Category utilizes separate message types to indicate a
desired function. The hold and retrieve families of messages are identified for this category.
The second category called the Common Information Element Category utilizes the Facility information
element to transport the protocol defined in GSM 04.80. The use of the Facility information element is
common to many services, and its contents indicates what type of procedure is being requested. This
category can be signalled both in the mobile to network and the network to mobile directions.
The control of supplementary services includes the following cases:
a) the request of supplementary service procedures during the establishment of a call;
b) the request of supplementary service procedures during the clearing of a call;
c) the request of call related supplementary service procedures during the active state of a call;
d) the request of supplementary service procedures independent from an active call;
e) the request of multiple, different supplementary service procedures within a single message;
f) the request of supplementary service procedures related to different calls.
The correlation of a call related supplementary service operation and the call which it modifies is provided
by use of the transaction identifier (cases a, b, c, e and f).
The correlation of supplementary service operations and their responses, is provided by the combination
of the transaction identifier of the messages containing the Facility information element and the Invoke
identifier present within the Facility information element itself (cases a, b, c, d, e and f).

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The identification of different supplementary service operations within one single message is provided by
the Invoke identifier present within the Facility information element itself (case e).
The identification of supplementary service related operations to different calls is provided by using
different messages with the corresponding transaction identifier of the appropriate call (case f),
i.e. different transaction identifier values are used to identify each call individually.
2.2.2 Separate Messages Category
The messages defined in this clause are specified as separate functional messages for the request,
acknowledgement and rejection of specific procedures. These procedures can only be performed during
the active phase of a call. The functions of these messages are not to be duplicated or overlapped by the
ones of the Common Information Element Category.
The following separate messages are defined:
HOLD RETRIEVE
HOLD ACKNOWLEDGE RETRIEVE ACKNOWLEDGE
HOLD REJECT RETRIEVE REJECT.
For detailed description of the Hold and Retrieve functions see GSM 04.83.
2.2.3 Common Information Element Category
The Common Information Element Category uses operations defined in GSM 04.80 for supplementary
services signalling. Procedures are initiated by sending an operation including an invoke component. The
invoke component may yield a Return Error, Return Result or Reject component (also included in an
operation) depending on the outcome of the procedure.
The operation state machines, and procedures for management of Invoke IDs specified in CCITT
Recommendation Q.774 White Book are used.
A REGISTER message, a FACILITY message or certain existing GSM 04.08 Call Control message is
used to carry the Facility information element which includes these operations. These operations request,
acknowledge or reject the desired supplementary service procedure.
2.2.4 Call related supplementary service procedures
2.2.4.1 Supplementary service procedures at call establishment or call clearing
For call related supplementary service procedures initiated at call establishment or call clearing, the
messages for call control specified in GSM 04.08 are utilized to transport Facility information elements.
This enables, for example the originating mobile user to send a supplementary service invoke component
within a SETUP message and to receive from the network a Return result, Return error, or Reject
component type within the Facility information element in an ALERTING message, CONNECT message,
or any other appropriate message.
2.2.4.2 Supplementary service procedures during the call
For call related supplementary service procedures during the active state of a call, the FACILITY message
is used for the exchange of the Facility information elements.
Note that the FACILITY message can also be used for this purpose in all states after the SETUP message
has been sent.
If the supplementary service procedure is related only to a single call, the FACILITY message will use the
transaction identifier and protocol discriminator of this call.

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If the supplementary service procedure affects more then one call, the FACILITY message may use the
transaction identifier and protocol discriminator of one of these calls.
If a call related FACILITY message is sent using the transaction identifier of a call in progress, and this
call is cleared due to call related causes, then the transaction identifier may not be cleared simultaneously
in all cases. Depending upon the supplementary service invoked, one of the following will occur:
- the network or mobile user may retain both the connection and the transaction identifier association
and may send a response within a Facility information element in a FACILITY message prior to the
initiation of the normal call clearing procedures; or
- the network or mobile user may send a response with a Facility information element in the first
clearing message (i.e. DISCONNECT, RELEASE or RELEASE COMPLETE message).
2.2.4.3 Handling of protocol errors in call related SS procedures
Messages containing a Facility information element shall be checked for protocol errors before the
contents of th
...