ETSI ETS 300 957 ed.1 (1997-05)

Digital cellular telecommunications system; Unstructured Supplementary Service Data (USSD); Stage 3 (GSM 04.90 version 5.0.1)

DE/SMG-030490Q

Digitalni celični telekomunikacijski sistem – Nestrukturirani podatki dopolnilne storitve (USSD) – Stopnja 3 (GSM 04.90, različica 5.0.1)

General Information

• Status: Published
• Publication Date: 02-Jun-1997
• Technical Committee: SMG 3 - Network Aspects
• Current Stage: 12 - Completion
• Due Date: 09-May-1997
• Completion Date: 03-Jun-1997
• Ref Project: SIST ETS 300 957 E1:2003 - Digital cellular telecommunications system; Unstructured Supplementary Service Data (USSD); Stage 3 (GSM 04.90 version 5.0.1)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST ETS 300 957 E1:2003
01-december-2003
'LJLWDOQLFHOLþQLWHOHNRPXQLNDFLMVNLVLVWHP±1HVWUXNWXULUDQLSRGDWNLGRSROQLOQH
VWRULWYH866'±6WRSQMD*60UD]OLþLFD
Digital cellular telecommunications system; Unstructured Supplementary Service Data
(USSD); Stage 3 (GSM 04.90 version 5.0.1)
Ta slovenski standard je istoveten z: ETS 300 957 Edition 1
ICS:
33.070.50 Globalni sistem za mobilno Global System for Mobile
telekomunikacijo (GSM) Communication (GSM)
SIST ETS 300 957 E1:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 957 E1:2003

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SIST ETS 300 957 E1:2003
EUROPEAN ETS 300 957
TELECOMMUNICATION May 1997
STANDARD
Source: ETSI TC-SMG Reference: DE/SMG-030490Q
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;
Unstructured Supplementary Service Data (USSD) - Stage 3
(GSM 04.90 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 300 957 (GSM 04.90 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 300 957 (GSM 04.90 version 5.0.1): May 1997
Contents
Foreword .5
1 Scope .7
2 Normative references.7
3 Abbreviations.7
4 Cross phase compatibility .7
5 Network initiated unstructured supplementary service data operations.8
5.1 Unstructured supplementary service data request .8
5.1.1 Normal operation.8
5.2 Unstructured supplementary service data notification .10
5.2.1 Normal operation.10
6 Mobile initiated unstructured supplementary service data operations.12
6.1 Normal operation .12
6.2 Cross phase compatibility.14
6.2.1 Network only supports protocol version 1 of unstructured supplementary
service data operations .14
6.2.2 Mobile station only supports protocol version 1 of unstructured
supplementary service data operations.14
Annex A (informative): Status of GSM 04.90 .15
History.16

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ETS 300 957 (GSM 04.90 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 specifies the stage 3 description of the Unstructured Supplementary Service Data (USSD)
operations within the digital cellular telecommunications system.
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/PNE 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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ETS 300 957 (GSM 04.90 version 5.0.1): May 1997
1 Scope
This European Telecommunication Standard (ETS) gives the stage 3 description of the Unstructured
Supplementary Service Data (USSD) operations.
The group of unstructured supplementary service data operations is divided into two different classes:
- Network initiated unstructured supplementary service data operations (clause 5);
- Mobile initiated unstructured supplementary service data operations (clause 6).
2 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 04.08 (ETS 300 940): "Digital cellular telecommunications system
(Phase 2+); Mobile radio interface layer 3 specification".
[3] GSM 04.80 (ETS 300 950): "Digital cellular telecommunications system
(Phase 2+); Mobile radio interface layer 3 supplementary services specification;
Formats and coding".
3 Abbreviations
Abbreviations used in this ETS are listed in GSM 01.04.
4 Cross phase compatibility
For the mobile initiated USSD operations, a number of changes exist between this ETS and the protocol
version 1 specification. For these operations the main body of this ETS assumes that all network entities
comply with this version of the service. In this case an additional subclause defines the additional
requirements for when one or more network entities or the Mobile Station (MS) complies with the protocol
version 1 specifications for the USSD operations.

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ETS 300 957 (GSM 04.90 version 5.0.1): May 1997
5 Network initiated unstructured supplementary service data operations
5.1 Unstructured supplementary service data request
5.1.1 Normal operation
The network invokes an USSD request by sending a REGISTER message containing a
UnstructuredSS-Request invoke component to the MS.
The MS shall respond to the request by sending a FACILITY message containing the user's mobile
subscriber's response in a return result component. The network shall pass the data received in the
response to the application handling USSD operations and shall wait for the response of the application.
The application may either continue or terminate the dialogue.
When the application continues the dialogue, it may initiate another USSD operation by sending a
FACILITY message (see figure 5.2). The operation may either be an USSD request or notification (see
subclause 5.1.2).
When the application terminates the dialogue, the network shall clear the transaction by sending a
RELEASE COMPLETE message. The MS may also clear the transaction at any time by sending a
RELEASE COMPLETE message upon the request of the user.
If the MS is unable to process the request received from the network, it shall return an error indication by
sending a FACILITY message containing a return error component. Error values are specified in
GSM 04.80.
When the MS receives an USSD operation in parallel to any call independent supplementary service
transaction, it shall respond with a return error component in a RELEASE COMPLETE message,
containing the 'USSD-Busy' error as specified in GSM 04.80, to indicate the failure in handling a parallel
USSD operation. However, the network is allowed to initiate USSD operations in parallel to call related
transactions.
  MS Network
REGISTER
<------------------------------------------------------------------------------------------------------------------------
Facility (Invoke = UnstructuredSS-Request (ussd-DataCodingScheme, ussd-String))
FACILITY
------------------------------------------------------------------------------------------------------------------------>
Facility (Return result = UnstructuredSS-Request (ussd-DataCodingScheme, ussd-String))
FACILITY
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ->
Facility (Return error (Error))
FACILITY
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ->
Facility (Reject (Invoke_problem))
RELEASE COMPLETE
<------------------------------------------------------------------------------------------------------------------------
NOTE: The MS may clear the transaction at any time by sending a RELEASE COMPLETE upon
request of the user.
Figure 5.1: Single network initiated USSD request

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ETS 300 957 (GSM 04.90 version 5.0.1): May 1997
  MS Network
REGISTER
<------------------------------------------------------------------------------------------------------------------------
Facility (Invoke = UnstructuredSS-Request (ussd-DataCodingScheme, ussd-String))
FACILITY
------------------------------------------------------------------------------------------------------------------------>
Facility (Return result = UnstructuredSS-Request (ussd-DataCodingScheme, ussd-String))
FACILITY
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ->
Facility (Return error (Error))
FACILITY
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ->
Facility (Reject (Invoke_problem))
FACILITY
<------------------------------------------------------------------------------------------------------------------------
Facility (Invoke = UnstructuredSS-Request (ussd-DataCodingScheme, ussd-String))
FACILITY
------------------------------------------------------------------------------------------------------------------------>
Facility (Return result = UnstructuredSS-Request (ussd-DataCodingScheme, ussd-String))
FACILITY
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ->
Facility (Return error (Error))
FACILITY
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ->
Facility (Reject (Invoke_problem))
.
.
.
RELEASE COMPLETE
<------------------------------------------------------------------------------------------------------------------------
NOTE 1: The MS may clear the transaction at any time by sending a RELEASE COMPLE
...