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TS 100 549 V6.0.0 (1999-01)Technical Specification
Digital cellular telecommunications system (Phase 2+);Unstructured Supplementary Service Data (USSD) - Stage 2
(GSM 03.90 version 6.0.0 Release 1997)
GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS
R
ETSI
TS 100 549 V6.0.0 (1999-01)2(GSM 03.90 version 6.0.0 Release 1997)
ReferenceDTS/SMG-030390Q6 (53003003.PDF)
KeywordsDigital cellular telecommunications system,
Global System for Mobile communications (GSM)
ETSI
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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 1999.All rights reserved.
ETSI
TS 100 549 V6.0.0 (1999-01)3(GSM 03.90 version 6.0.0 Release 1997)
Contents
Intellectual Property Rights................................................................................................................................4
Foreword ............................................................................................................................................................4
1 Scope........................................................................................................................................................5
2 References................................................................................................................................................5
3 Abbreviations ...........................................................................................................................................6
4 Cross phase compatibility ........................................................................................................................6
5 Network initiated unstructured supplementary service............................................................................65.1 Handling of network initiated USSD ................................................................................................................. 65.2 Functions and information flows........................................................................................................................ 65.2.1 Invoking unstructured SS operation from the HLR...................................................................................... 65.2.2 Invoking unstructured SS operation from the VLR...................................................................................... 75.2.3 Invoking unstructured SS operation from the MSC ..................................................................................... 75.2.4 Forwarding USSD operations ...................................................................................................................... 75.2.5 Handling of unstructured SS operation at the MS........................................................................................ 85.3 Information stored in the HLR......................................................................................................................... 155.4 Information stored in the VLR......................................................................................................................... 155.5 Handover ......................................................................................................................................................... 155.6 Cross-phase compatibility................................................................................................................................ 16
6 Mobile initiated unstructured supplementary service data ....................................................................166.1 Handling of mobile initiated USSD ................................................................................................................. 166.2 Functions and information flows...................................................................................................................... 166.2.1 Handling of USSD request at MS .............................................................................................................. 166.2.2 Handling of USSD request at MSC............................................................................................................ 176.2.3 Handling of USSD request at VLR ............................................................................................................ 176.2.4 Handling of USSD request at HLR ............................................................................................................ 176.2.5 Processing the USSD request ..................................................................................................................... 176.3 Information stored in the HLR......................................................................................................................... 306.4 Information stored in the VLR......................................................................................................................... 306.5 Handover ......................................................................................................................................................... 316.6 Cross-phase compatibility................................................................................................................................ 31
Annex A (informative): Change Request History ...............................................................................32
History..............................................................................................................................................................33
ETSI
TS 100 549 V6.0.0 (1999-01)4(GSM 03.90 version 6.0.0 Release 1997)
Intellectual Property RightsIPRs essential or potentially essential to the present document may have been declared to ETSI. The informationpertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be foundin SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respectof ETSI standards", which is available free of charge from the ETSI Secretariat. Latest updates are available on theETSI Web server (http://www.etsi.org/ipr).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guaranteecan be given as to the existence of other IPRs not referenced in SR 000 314 (or the updates on the ETSI Web server)which are, or may be, or may become, essential to the present document.
ForewordThis Technical Specification (TS) has been produced by the Special Mobile Group (SMG).
The present document defines the stage 2 description of Unstructured Supplementary Service Data (USSD) within thedigital cellular telecommunications system.
The contents of the present document is subject to continuing work within SMG and may change following formal SMGapproval. Should SMG modify the contents of the present document it will be re-released with an identifying change ofrelease date and an increase in version number as follows:
Version 6.x.y
where:
6 indicates Release 1997 of GSM Phase 2+
x the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates,etc.
y the third digit is incremented when editorial only changes have been incorporated in the specification.
ETSI
TS 100 549 V6.0.0 (1999-01)5(GSM 03.90 version 6.0.0 Release 1997)
1 ScopeThe present document gives the stage 2 description of Unstructured Supplementary Service Data (USSD).
The unstructured supplementary service data (USSD) mechanism allows the Mobile Station (MS) user and a PLMNoperator defined application to communicate in a way which is transparent to the MS and to intermediate networkentities. The mechanism allows development of PLMN specific supplementary services. The following diagram showshow handling of USSD is carried out, independently of the applications.
86(586(5
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Figure 1.1: Handling of USSD
The present document defines the requirements for handling USSD at the MS and network entities. It does not includespecification of particular applications, nor does it specify how a particular application is selected. Where more than oneapplication exists at a network entity, routing of messages to the correct application is carried out by the USSD handler.The MMI for USSD is specified in GSM 02.30 and GSM 02.90. The alphabet indicator and the data coding scheme aredefined in GSM 03.38.
USSD may be initiated by the MS user, or by the network in the following ways:
- Network initiated USSD(clause 1);
- Mobile initiated USSD (clause 2).
2 ReferencesThe following documents contain provisions which, through reference in this text, constitute provisions of the presentdocument.
• References are either specific (identified by date of publication, edition number, version number, etc.) ornon-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies.
• A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the samenumber.
[1] GSM 01.04: "Digital cellular telecommunications system (Phase 2+); Abbreviations andacronyms".
[2] GSM 02.30: "Digital cellular telecommunications system (Phase 2+); Man-Machine Interface(MMI) of the Mobile Station (MS)".
[3] GSM 02.90: "Digital cellular telecommunications system (Phase 2+); Unstructured SupplementaryService Data (USSD) - Stage 1".
[4] GSM 03.38: "Digital cellular telecommunications system (Phase 2+); Alphabets andlanguage-specific information".
ETSI
TS 100 549 V6.0.0 (1999-01)6(GSM 03.90 version 6.0.0 Release 1997)
3 AbbreviationsIn addition to those below, abbreviations used in the present document are listed in GSM 01.04 [1].
AI Application InitiatedMI Mobile InitiatedUSSD Unstructured Supplementary Service Data
4 Cross phase compatibilityThe Phase 1 series of GSM specifications defined the signalling protocol which may be used, but they did not specifythe operation of USSD as a service.
The main body of the present document assumes that the MS and all network entities comply with this phase of USSD.In order to minimize any possible problems between a Phase 1 implementation of USSD and this phase, subclauses 5.6and 6.6 define the additional requirements for when one or more entity complies with the Phase 1 USSD specificationfor network initiated and mobile initiated USSD respectively.
5 Network initiated unstructured supplementary service
5.1 Handling of network initiated USSDThe network (MSC, VLR or HLR) can at any time send a USSD operation towards an MS. This operation may be eithera request (asking the MS to provide information) or a notification (requiring no information in the response from theMS). No prior provision of USSD is required, although provision of services which make use of USSD may be required.All USSD requests, notifications and responses (except responses to notifications) contain the USSD string, an alphabetindicator and language indicator.
5.2 Functions and information flowsThe following text describes the handling of network initiated USSD. Diagrammatic representations are as follows:
Figure 5.1 SDL for USSD invocation (HLR, VLR, MSC);
Figure 5.2 SDL for forwarding of USSD operations (VLR, MSC);
Figure 5.3 SDL for MS;
Figure 5.4 Information flow for successful single USSD request;
Figure 5.5 Information flow for successful single USSD notification;
Figure 5.6 Information flow for successful multiple USSD requests;
Figure 5.7 Information flow for failed USSD request.
5.2.1 Invoking unstructured SS operation from the HLR
When an application in the HLR is to send a USSD request or notification to an MS, it shall set up a transaction to theVLR where the subscriber is currently registered and send the operation to the VLR. It shall then await a response. TheHLR is responsible for controlling the transaction, and shall therefore normally release the transaction when it receives aresponse from the VLR. The HLR may also release the transaction before receiving a response if necessary (e.g. if anapplication timer expires).
ETSI
TS 100 549 V6.0.0 (1999-01)7(GSM 03.90 version 6.0.0 Release 1997)
If an application in the HLR needs to send further operations to the same MS as part of the same application, it maycontinue to use the same transaction until all operations are completed (see figure 5.6). If a different transaction is to beused for a subsequent operation, the HLR shall release the first transaction before starting the next.
If the VLR releases the transaction at any time (e.g. due to user clearing), the HLR shall inform the application andterminate the USSD operation.
See subclause 5.2.4 for forwarding of an HLR invoked operation by the VLR and MSC.
5.2.2 Invoking unstructured SS operation from the VLR
When an application in the VLR is to send a USSD request or notification to an MS, it shall set up a transaction to theMSC where the subscriber is currently registered and send the operation to the MSC. It shall then await a response. TheVLR is responsible for controlling the transaction, and shall therefore normally release the transaction when it receives aresponse from the MSC. The VLR may also release the transaction before receiving a response if necessary (e.g. if anapplication timer expires).
If an application in the VLR needs to send further operations to the same MS as part of the same application, it maycontinue to use the same transaction until all operations are completed. If a different transaction is to be used for asubsequent operation, the VLR shall release the first transaction before starting the next.
See subclause 5.2.4 for forwarding of a VLR invoked operation by the MSC.
If the MSC releases the transaction at any time (e.g. due to the user clearing), the VLR shall inform the application andterminate the USSD operation.
5.2.3 Invoking unstructured SS operation from the MSC
When an application in the MSC is to send a USSD request or notification to an MS, it shall set up a transaction to theMS where the subscriber is currently registered and send the operation to the MS. It shall then await a response. TheMSC is responsible for controlling the transaction, and shall therefore normally release the transaction when it receives aresponse from the MS. The MSC may also release the transaction before receiving a response if necessary (e.g. if anapplication timer expires).
If an application in the MSC needs to send further operations to the same MS as part of the same application, it maycontinue to use the same transaction until all operations are completed. If a different transaction is to be used for asubsequent operation, the VLR shall release the first transaction before starting the next.
If the MS releases the transaction at any time (e.g. due to the user clearing), the MSC shall inform the application andterminate the USSD operation.
NOTE: MSC invoked USSD is only likely to be used for call related operations, where the application iscontrolling a call to or from the MS.
5.2.4 Forwarding USSD operations
The VLR may any time receive a USSD operation from the HLR. If the subscriber can be contacted, the VLR shall setup a transaction to the MSC and forward the operation unchanged. Any further information exchange between the HLRand MSC shall be transparent to the VLR. When one transaction is released, the VLR shall release the other.
The MSC may at any time receive an USSD operation from the VLR. If the subscriber can be contacted, the MSC shallset up a transaction to the MS and forward the operation unchanged. Any further information exchange between theVLR and MS shall be transparent to the MSC. When one transaction is released, the MSC shall release the other.
ETSI
TS 100 549 V6.0.0 (1999-01)8(GSM 03.90 version 6.0.0 Release 1997)
5.2.5 Handling of unstructured SS operation at the MS
The MS may at any time receive a USSD operation (request or notification) from the MSC.
If the MS receives a USSD transaction while another USSD transaction (network or mobile initiated) or a non-callrelated supplementary service transaction is in progress, the MS shall reject the new transaction.
If the MS receives a USSD operation when it is in a state where the MMI required is not possible (e.g. during dialling) itshall reject the operation.
If the MS does not support the alphabet indicated in the USSD operation, it shall inform the network.
If the MS is in a state where it can handle the operation, it shall process the operation as follows:
- For a USSD request, the MS shall display the text provided and await user input. If the user enters a response, theMS shall return the response to the MSC, maintaining the transaction. If the user requests release of thetransaction, the MS shall release the transaction. See GSM 02.30 for details of the MMI.
- For a USSD notification, the MS shall display the text provided and send back a response.
After sending the response to a USSD operation, the MS shall wait for the network to release the transaction. If, whileawaiting this release, the MS receives any further USSD operations, it shall process them in the normal way.
ETSI
TS 100 549 V6.0.0 (1999-01)9(GSM 03.90 version 6.0.0 Release 1997)
Process USSD_NI1 390_51(1)
Figure 5.1INPUTS AND OUTPUTS
Source/destination of messagesshown to/from the right isthe application.
Source/destination of messagesshown to/from the left dependson the entity being described,as follows:
Entity To/From
HLR VLR VLR MSC MSC MS
idle
USSDrequest
MSreachable
RELEASE (error)
idle
USSDrequest
NWwait userresponse
error
error
waitfor
application
release
release
idle
release
release
USSD request
USSDrequest
NWwait userresponse
USSD notify
USSDnotify
release
release
idle
release
release
USSD response
USSD response
USSD notify
MSreachable
RELEASE (error)
idle
USSDnotify
no
yes
no
yes
Figure 5.1: Network initiated USSD invoked at HLR, VLR or MSC
ETSI
TS 100 549 V6.0.0 (1999-01)10(GSM 03.90 version 6.0.0 Release 1997)
Process USSD_NI2 390_52(1)
Figure 5.2
INPUTS AND OUTPUTS
Source/destination of messagesdepends on the entity beingdescribed, as follows:
Entity Left Right
VLR MSC HLR MSC MS VLR
idle
USSDrequest
MSreachable
RELEASE (error)
idle
USSDrequest
forwardingwait user
error
error
forwardingwait application
release
release
idle
release
release
USSD request
USSDrequest
forwardingwait user
USSD notify
USSDnotify
release
release
idle
release
release
USSD response
USSD response
USSD notify
MSreachable
RELEASE (error)
idle
USSDnotify
no
yes
no
yes
Figure 5.2: Network initiated USSD forwarding at VLR or MSC
ETSI
TS 100 549 V6.0.0 (1999-01)11(GSM 03.90 version 6.0.0 Release 1997)
Process USSD_NI3 390_53(1)
Figure 5.3
INPUTS AND OUTPUTS
Source/destination of messagesshown to/from the left isthe MS MMI.
Source/destination of messagesshown to/from the right isthe network.
2
alphabetsupported
error
waitnetwork
action
validstate
USSDrequest
MSwait userresponse
release
release
idle
release
release
USSD response
USSD response
waitnetwork
action
release
release
idle
release
release
USSD request
2
USSD notify
1
1
alphabetsupported
error
waitnetwork
action
validstate
USSDnotify
USSD response
idle
USSD request
USSD notify
no
yes
no
yes
no
yes
no
yes
Figure 5.3: Network initiated USSD at MS
ETSI
TS 100 549 V6.0.0 (1999-01)12(GSM 03.90 version 6.0.0 Release 1997)
06 06& 9/5 +/5¸¶¶¶¶¶¹ ¸¶¶¶¶¶¹ ¸¶¶¶¶¶¹ ¸¶¶¶¶¶¹· · · · · · · ··+/5 LQLWLDWHG · · · · · ·· · · · · · · ·· · · · · ·866' UHTXHVW · ·· · · ·866' UHTXHVW · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ ·· ·866' UHTXHVW · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·· ·866' UHVSRQVH· · · · · ·· ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·866' UHVSRQVH· · · ·· · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·866' UHVSRQVH· ·· · · · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·· · · · · · · ·· · · · · · 5HOHDVH · ·· · · · 5HOHDVH · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ ·· · 5HOHDVH · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·· · · · · · · ··9/5 LQLWLDWHG · · · · · ·· · · · · · · ·· · · ·866' UHTXHVW · · · ·· ·866' UHTXHVW · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·· ·866' UHVSRQVH· · · · · ·· ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·866' UHVSRQVH· · · ·· · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · · ·· · · · · · · ·· · · · 5HOHDVH · · · ·· · 5HOHDVH · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·· · · · · · · ··06& LQLWLDWHG · · · · · ·· · · · · · · ·· ·866' UHTXHVW · · · · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·· ·866' UHVSRQVH· · · · · ·· ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · · · · ·· · · · · · · ·· · 5HOHDVH · · · · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·
Figure 5.4: Information flow for USSD request (Single Operation)
ETSI
TS 100 549 V6.0.0 (1999-01)13(GSM 03.90 version 6.0.0 Release 1997)
06 06& 9/5 +/5¸¶¶¶¶¶¹ ¸¶¶¶¶¶¹ ¸¶¶¶¶¶¹ ¸¶¶¶¶¶¹· · · · · · · ··+/5 LQLWLDWHG · · · · · ·· · · · · · · ·· · · · · ·866' QRWLI\ · ·· · · ·866' QRWLI\ · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ ·· ·866' QRWLI\ · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·· ·866' UHVSRQVH· · · · · ·· ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·866' UHVSRQVH· · · ·· · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·866' UHVSRQVH· ·· · · · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·· · · · · · · ·· · · · · · 5HOHDVH · ·· · · · 5HOHDVH · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ ·· · 5HOHDVH · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·· · · · · · · ··9/5 LQLWLDWHG · · · · · ·· · · · · · · ·· · · ·866' QRWLI\ · · · ·· ·866' QRWLI\ · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·· ·866' UHVSRQVH· · · · · ·· ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·866' UHVSRQVH· · · ·· · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · · ·· · · · · · · ·· · · · 5HOHDVH · · · ·· · 5HOHDVH · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·· · · · · · · ··06& LQLWLDWHG · · · · · ·· · · · · · · ·· ·866' QRWLI\ · · · · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·· ·866' UHVSRQVH· · · · · ·· ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · · · · ·· · · · · · · ·· · 5HOHDVH · · · · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·
Figure 5.5: Information flow for USSD notification (Single Operation)
ETSI
TS 100 549 V6.0.0 (1999-01)14(GSM 03.90 version 6.0.0 Release 1997)
06 06& 9/5 +/5¸¶¶¶¶¶¹ ¸¶¶¶¶¶¹ ¸¶¶¶¶¶¹ ¸¶¶¶¶¶¹· · · · · · · ·· · · · · ·866' UHTXHVW · ·· · · ·866' UHTXHVW · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ ·· ·866' UHTXHVW · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·· ·866' UHVSRQVH· · · · · ·· ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·866' UHVSRQVH· · · ·· · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·866' UHVSRQVH· ·· · · · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·· · · · · · · ·� � � � � � � �� � � � � � � �� � � � � � � �· · · · · ·866' UHTXHVW · ·· · · ·866' UHTXHVW · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ ·· ·866' UHTXHVW · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·· ·866' UHVSRQVH· · · · · ·· ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·866' UHVSRQVH· · · ·· · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·866' UHVSRQVH· ·· · · · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·· · · · · · · ·· · · · · · 5HOHDVH · ·· · · · 5HOHDVH · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ ·· · 5HOHDVH · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·
Figure 5.6: Information flow for HLR initiated USSD request (Multiple Operation On SameTransaction)
ETSI
TS 100 549 V6.0.0 (1999-01)15(GSM 03.90 version 6.0.0 Release 1997)
06 06& 9/5 +/5¸¶¶¶¶¶¹ ¸¶¶¶¶¶¹ ¸¶¶¶¶¶¹ ¸¶¶¶¶¶¹· · · · · · · ··9/5 FDQQRW FRQWDFW VXEVFULEHU · · · ·· · · · · · · ·· · · · · ·866' UHTXHVW · ·· · · · · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ ·· · · · · · · ·· · · · · · (UURU · ·· · · · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·· · · · · · · ·· · · · · · · ··06& FDQQRW FRQWDFW VXEVFULEHU · · · ·· · · · · · · ·· · · · · ·866' UHTXHVW · ·· · · ·866' UHTXHVW · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ ·· · · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · ·· · · · · · · ·· · · · (UURU · · · ·· · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · (UURU · ·· · · · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·· · · · · · · ·· · · · · · · ··(UURU GHWHFWHG DW 06 · · · · ·· · · · · · · ·· · · · · ·866' UHTXHVW · ·· · · ·866' UHTXHVW · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ ·· ·866' UHTXHVW · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·· · (UURU · · · · · ·· ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · (UURU · · · ·· · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · (UURU · ·· · · · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·· · · · · · · ·· · · · · · · ··06 FOHDUV WUDQVDFWLRQ · · · · ·· · · · · · · ·· · · · · ·866' UHTXHVW · ·· · · ·866' UHTXHVW · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ ·· ·866' UHTXHVW · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·· · 5HOHDVH · · · · · ·· ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · 5HOHDVH · · · ·· · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · 5HOHDVH · ·· · · · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·· · · · · · · ·
Figure 5.7: Information flow for failed USSD request
5.3 Information stored in the HLRThe HLR shall not store any information specific to the use of USSD, although information may be stored for serviceswhich are offered by USSD applications.
5.4 Information stored in the VLRThe VLR shall not store any information specific to the use of USSD, although information may be stored for serviceswhich are offered by USSD applications.
5.5 HandoverHandover will have no impact on the operation of this service.
ETSI
TS 100 549 V6.0.0 (1999-01)16(GSM 03.90 version 6.0.0 Release 1997)
5.6 Cross-phase compatibilityNetwork initiated USSD shall not be permitted if the MS or any network entity involved in the operation is of Phase 1.If, when setting up a transaction, a network entity discovers that the other end is of Phase 1, it shall reject the request andrelease the transaction being set up.
6 Mobile initiated unstructured supplementary servicedata
6.1 Handling of mobile initiated USSDA MS can at any time initiate a USSD request to the network. No prior provision of the service is required, althoughprovisioning of services which make use of USSD may be required. All USSD messages (requests and responses),contain the USSD string, an alphabet indicator and language indicator.
6.2 Functions and information flowsThe following text describes the handling of mobile network initiated USSD. Diagrammatic representations are asfollows:
Figure 6.1 SDL, request from user at MS;
Figure 6.2 SDL, request from MS at MSC;
Figure 6.3 SDL, request from application at MSC;
Figure 6.4 SDL, request from MSC at VLR;
Figure 6.5 SDL, request from application at VLR;
Figure 6.6 SDL, request from VLR at HLR;
Figure 6.7 Information flow, no further information required;
Figure 6.8 Information flow, further information required;
Figure 6.9 Information flow for failed USSD request.
6.2.1 Handling of USSD request at MS
When the user makes a request which the MS determines is to make use of USSD, the MS shall set up a transaction tothe network, send the request to the MSC and await a response. When the MS receives the response, it shall display theinformation contained to the user.
While awaiting the response, the MS may receive a network initiated USSD request or notification on the sametransaction. If this occurs, the MS shall process that operation (see section 1) and continue to await the response to themobile initiated request.
If, when the MS determines that a user request is to make use of USSD, the MS is already involved in a USSD or a non-call related supplementary service transaction, the MS shall reject the request.
ETSI
TS 100 549 V6.0.0 (1999-01)17(GSM 03.90 version 6.0.0 Release 1997)
6.2.2 Handling of USSD request at MSC
When an MSC receives a USSD request containing an HPLMN service code, it shall set up a transaction to the VLR andforward the request unchanged. If this forwarding fails, an error shall be returned to the MS. The MSC shall betransparent to any further requests or responses (in either direction) for that transaction, passing them between the MSand VLR without taking any action. When one transaction is released (MS-MSC or MSC-VLR), the MSC shall releasethe other.
If an HPLMN service code is not included, the MSC shall process the request locally (see section 6.2.5).
If the MSC does not support the alphabet used in a USSD request, it shall set up a transaction to the VLR and forwardthe request unchanged, in the same way as when a HPLMN service code is received.
6.2.3 Handling of USSD request at VLR
When a VLR receives a USSD request containing an HPLMN service code and the user is not in the HPLMN, it shallset up a transaction to the HLR and forward the request unchanged. If this forwarding fails, an error shall be returned tothe MS. The VLR shall be transparent to any further requests or responses (in either direction) for that transaction,passing them between the MSC and HLR without taking any action. When one transaction is released (MSC-VLR orVLR-HLR), the VLR shall release the other.
If an HPLMN service code is not included, or the user is in the HPLMN, the VLR shall process the request locally (seesubclause 6.2.5).
If the VLR does not support the alphabet used in a USSD request, it shall set up a transaction to the HLR and forwardthe request unchanged, in the same way as when a HPLMN service code is received and the user is not in the HPLMN.
6.2.4 Handling of USSD request at HLR
An HLR shall always process a USSD request locally (see subclause 6.2.5).
If the HLR does not support the alphabet used in a USSD request, it shall inform the MS and release the transaction.
6.2.5 Processing the USSD request
When a network entity is to process a USSD request locally, the request shall be handled by an appropriate application.The location, nature and contents of USSD applications is, by definition, service provider and network operatordependent, but may include:
- Setting up or releasing signalling and/or speech channels;
- Passing the request to another network entity (unchanged or changed);
- Passing a different USSD request to another network entity;
and/or
- Requesting further information from the MS (one or more times).
Upon completion of handling the request, the network entity shall respond to the request and release the transaction.
ETSI
TS 100 549 V6.0.0 (1999-01)18(GSM 03.90 version 6.0.0 Release 1997)
Process USSD_MI1 390_61(1)
INPUTS AND OUTPUTS
Source/destination of messagesshown to/from the left isthe MS MMI.
Source/destination of messagesshown to/from the right isthe MSC.
Figure 6.1 idle
USSD request
USSD request
waitnetworkresponse
release
release
idle
USSD notify
USSD notify
USSD response
waitnetworkresponse
error
error
release
release
USSD request
USSD request
MIwait userresponse
error
error
idle
release
release
release
release
USSD response
USSD response
waitnetworkresponse
USSD response
USSD response
idle
Figure 6.1: Mobile initiated USSD at MS
ETSI
TS 100 549 V6.0.0 (1999-01)19(GSM 03.90 version 6.0.0 Release 1997)
Process USSD_MI2 390_621(3)
INPUTS AND OUTPUTS
Source/destination of messagesshown to/from the left is the MS.
Source/destination of messagesshown to/from the right is eitherthe VLR or the application(as indicated).
Figure 6.2 (sheet 1 of 3)
idle
USSD request
alphabetsupported
USSD request (VLR)
MIwait VLRresponse
HPLMNservice
code
USSD request (appl)
MSCapplicationprocessing
no
yes
no
yes
Figure 6.2 (sheet 1 of 3): Mobile initiated USSD at MSC
ETSI
TS 100 549 V6.0.0 (1999-01)20(GSM 03.90 version 6.0.0 Release 1997)
Process USSD_MI2 390_622(3)
Figure 6.2 (sheet 2 of 3)MI
wait VLRresponse
USSD notify (VLR)
USSD notify
MIwait userresponse(for VLR)
error
error (VLR)
MIwait VLRresponse
release (VLR)
release
idle
release
release (VLR)
USSD response
USSD response (VLR)
MIwait VLRresponse
USSD response (VLR)
USSD response
idle
error (VLR)
error
idle
release (VLR)
release
release
release (VLR)
USSD request (VLR)
USSD request
Figure 6.2 (sheet 2 of 3): Mobile initiated USSD at MSC
ETSI
TS 100 549 V6.0.0 (1999-01)21(GSM 03.90 version 6.0.0 Release 1997)
Process USSD_MI2 390_623(3)
Figure 6.2 (sheet 3 of 3)MSC
applicationprocessing
USSD notify (application)
USSD notify
MSCwait userresponse
(for application)
error
error (application)
MSCapplicationprocessing
release (application)
release
idle
release
release (application)
USSD response
USSD response (application)
MSCapplicationprocessing
USSD response (application)
USSD response
idle
error (application)
error
idle
release (application)
release
release
release (application)
USSD request (applIcation)
USSD request
Figure 6.2 (sheet 3 of 3): Mobile initiated USSD at MSC
ETSI
TS 100 549 V6.0.0 (1999-01)22(GSM 03.90 version 6.0.0 Release 1997)
Process USSD_AI1 390_63(1)
INPUTS AND OUTPUTS
For consistency with other SDLdiagrams, all messages areshown to/from the right, foreither the VLR or theapplication (as indicated).
USSD request from applicationis used when an applicationreceives a request from a MS andpasses on the request (changed orunchanged) or generates a newrequest.
Figure 6.3 idle
USSD request (application)
USSD request (VLR)
AIwait VLRresponse
USSD notify (VLR)
USSD notify (application)
AIwait application
response(for VLR)
error (application)
error (VLR)
AIwait VLRresponse
release (VLR)
release (application)
idle
release (application)
release (VLR)
USSD response (application)
USSD response (VLR)
AIwait VLRresponse
release (VLR)
release (application)
idle
error (VLR)
error (application)
release (application)
release (VLR)
USSD request (VLR)
USSD request (application)
USSD response (VLR)
USSD response (application)
idle
Figure 6.3: Application initiated USSD at MSC
ETSI
TS 100 549 V6.0.0 (1999-01)23(GSM 03.90 version 6.0.0 Release 1997)
Process USSD_MI3 390_641(3)
INPUTS AND OUTPUTS
Source/destination of messagesshown to/from the left is the MSC.
Source/destination of messagesshown to/from the right is eitherthe HLR or the application(as indicated).
Figure 6.4 (sheet 1 of 3)
idle
USSD request
alphabetsupported
USSD request (HLR)
MIwait HLRresponse
HPLMNservice
code
USSD request (application)
VLRapplicationprocessing
no
yes
no
yes
Figure 6.4 (sheet 1 of 3): Mobile initiated USSD at VLR
ETSI
TS 100 549 V6.0.0 (1999-01)24(GSM 03.90 version 6.0.0 Release 1997)
Process USSD_MI3 390_642(3)
Figure 6.4 (sheet 2 of 3)MI
wait HLRresponse
USSD notify (HLR)
USSD notify
MIwait userresponse(for HLR)
error
error (HLR)
MIwait HLRresponse
release (HLR)
release
idle
release
release (HLR)
USSD response
USSD response (HLR)
MIwait HLRresponse
USSD response (HLR)
USSD response
idle
error (HLR)
error
idle
release (HLR)
release
release
release (HLR)
USSD request (HLR)
USSD request
Figure 6.4 (sheet 2 of 3): Mobile initiated USSD at VLR
ETSI
TS 100 549 V6.0.0 (1999-01)25(GSM 03.90 version 6.0.0 Release 1997)
Process USSD_MI3 390_643(3)
Figure 6.4 (sheet 3 of 3)VLR
applicationprocessing
USSD notify (application)
USSD notify
VLRwait userresponse
(for application)
error
error (application)
VLRapplicationprocessing
release (application)
release
idle
release
release (application)
USSD response
USSD response (application)
VLRaplicationprocessing
USSD response (application)
USSD response
idle
error (application)
error
idle
release (application)
release
release
release (application)
USSD request (application)
USSD request
Figure 6.4 (sheet 3 of 3): Mobile initiated USSD at VLR
ETSI
TS 100 549 V6.0.0 (1999-01)26(GSM 03.90 version 6.0.0 Release 1997)
Process USSD_AI2 390_65(1)
INPUTS AND OUTPUTS
For consistency with other SDLdiagrams, all messages areshown to/from the right, foreither the HLR or theapplication (as indicated).
USSD request from applicationis used when an applicationreceives a request from a MS andpasses on the request (changed orunchanged) or generates a newrequest.
Figure 6.5 idle
USSD request (application)
USSD request (HLR)
AIwait HLRresponse
USSD notify (HLR)
USSD notify (application)
AIwait application
response(for HLR)
error (application)
error (HLR)
AIwait HLRresponse
release (HLR)
release (application)
idle
release (application)
release (HLR)
USSD response (application)
USSD response (HLR)
AIwait HLRresponse
release (HLR)
release (application)
idle
error (HLR)
error (application)
release (application)
release (HLR)
USSD request (HLR)
USSD request (application)
USSD response (HLR)
USSD response (application)
idle
Figure 6.5: Application initiated USSD at VLR
ETSI
TS 100 549 V6.0.0 (1999-01)27(GSM 03.90 version 6.0.0 Release 1997)
Process USSD_MI4 390_66(1)
Figure 6.6
INPUTS AND OUTPUTS
Source/destination of messagesshown to/from the left is the VLR.
Source/destination of messagesshown to/from the right is theapplication.
idle
USSD request
alphabetsupported
error
idle
USSD request
HLRapplicationprocessing
USSD notify
USSD notify
HLRwait userresponse
error
error
HLRapplicationprocessing
release
release
idle
release
release
USSD response
USSD response
HLRapplicationprocessing
release
release
idle
error
error
release
release
USSD request
USSD request
USSD response
USSD response
idle
no
yes
Figure 6.6: Mobile initiated USSD at HLR
ETSI
TS 100 549 V6.0.0 (1999-01)28(GSM 03.90 version 6.0.0 Release 1997)
06 06& 9/5 +/5¸¶¶¶¶¶¹ ¸¶¶¶¶¶¹ ¸¶¶¶¶¶¹ ¸¶¶¶¶¶¹· · · · · · · ··5HTXHVW KDQGOHG E\ 06& · · · · ·· · · · · · · ·· ·866' UHTXHVW · · · · · ·· ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · · · · ·· · ·25��1· · · · ·· ·866' UHVSRQVH· · · · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·· · · · · · · ··5HTXHVW KDQGOHG E\ 9/5 · · · · ·· · · · · · · ·· ·866' UHTXHVW · · · · · ·· ¼¶¶¶¶¶¶¶¶¶¶¶¶!·25��<· · · · ·· · · ·866' UHTXHVW · · · ·· · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · · ·· · · · ·25��1· · ·· · · ·866' UHVSRQVH· · · ·· ·866' UHVSRQVH· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·· · · · · · · ··5HTXHVW KDQGOHG E\ +/5 · · · · ·· · · · · · · ·· ·866' UHTXHVW · · · · · ·· ¼¶¶¶¶¶¶¶¶¶¶¶¶!·25��<· · · · ·· · · ·866' UHTXHVW · · · ·· · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!·25��<· · ·· · · · · ·866' UHTXHVW · ·· · · · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·· · · · · · · ·· · · · · ·866' UHVSRQVH· ·· · · ·866' UHVSRQVH· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ ·· ·866' UHVSRQVH· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·
NOTE: OR1: HPLMN service code Y: YesOR2: HPLMN service code and user not in HPLMN N: No
Note that the application at the MSC/VLR may pass the request on to another network entity. This is notshown here.
Figure 6.7: Information flow for mobile initiated USSD Request (No further information requested)
ETSI
TS 100 549 V6.0.0 (1999-01)29(GSM 03.90 version 6.0.0 Release 1997)
06 06& 9/5 +/5¸¶¶¶¶¶¹ ¸¶¶¶¶¶¹ ¸¶¶¶¶¶¹ ¸¶¶¶¶¶¹· · · · · · · ·· ·866' UHTXHVW · · · · · ·· ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · · · · ·· · · ·866' UHTXHVW · · · ·· · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · · ·· · · · · ·866' UHTXHVW · ·· · · · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·· · · · · · · ·· · · · · ·866' UHTXHVW · ·· · · ·866' UHTXHVW · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ ·· ·866' UHTXHVW · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·· ·866' UHVSRQVH· · · · · ·· ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · · · · ·· · · ·866' UHVSRQVH· · · ·· · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · · ·· · · · · ·866' UHVSRQVH· ·· · · · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·· · · · · · · ·� � � � � � � �� � � � � � � �� � � � � � � �· · · · · ·866' UHTXHVW · ·· · · ·866' UHTXHVW · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ ·· ·866' UHTXHVW · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·· ·866' UHVSRQVH· · · · · ·· ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · · · · ·· · · ·866' UHVSRQVH· · · ·· · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · · ·· · · · · ·866' UHVSRQVH· ·· · · · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·· · · · · · · ·· · · · · ·866' UHVSRQVH· ·· · · ·866' UHVSRQVH· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ ·· ·866' UHVSRQVH· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·
NOTE: Note that this call flow only shows one example to illustrate the possible scenarios. See the SDL diagramsfor a complete description.
Figure 6.8: Information flow for mobile initiated USSD Request Handled by HLR, further informationrequested
ETSI
TS 100 549 V6.0.0 (1999-01)30(GSM 03.90 version 6.0.0 Release 1997)
06 06& 9/5 +/5¸¶¶¶¶¶¹ ¸¶¶¶¶¶¹ ¸¶¶¶¶¶¹ ¸¶¶¶¶¶¹· · · · · · · ··(UURU GHWHFWHG DW 06& · · · · ·· · · · · · · ·· ·866' UHTXHVW · · · · · ·· ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · · · · ·· · · · · · · ·· · (UURU · · · · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·· · · · · · · ··(UURU GHWHFWHG DW 9/5 · · · · ·· · · · · · · ·· ·866' UHTXHVW · · · · · ·· ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · · · · ·· · · ·866' UHTXHVW · · · ·· · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · · ·· · · · · · · ·· · · · (UURU · · · ·· · (UURU · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·· · · · · · · ··(UURU GHWHFWHG DW +/5 · · · · ·· · · · · · · ·· ·866' UHTXHVW · · · · · ·· ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · · · · ·· · · ·866' UHTXHVW · · · ·· · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · · ·· · · · · ·866' UHTXHVW · ·· · · · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·· · · · · · · ·· · · · · · (UURU · ·· · · · (UURU · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ ·· · (UURU · ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · ·· ·�¶¶¶¶¶¶¶¶¶¶¶¶½ · · · · ·· · · · · · · ·· · · · · · · ··06 FOHDUV WUDQVDFWLRQ EHIRUH UHVSRQVH UHFHLYHG · ·· · · · · · · ·· ·866' UHTXHVW · · · · · ·· ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · · · · ·· · · ·866' UHTXHVW · · · ·· · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · · ·· · · · · ·866' UHTXHVW · ·· · · · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·· · 5HOHDVH · · · · · ·· ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · · · · ·· · · · 5HOHDVH · · · ·· · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· · · ·· · · · · · 5HOHDVH · ·· · · · · ¼¶¶¶¶¶¶¶¶¶¶¶¶!· ·· · · · · · · ·
NOTE: This call flow only shows a limited number of examples to illustrate the possible scenarios. See the SDLdiagrams for a complete description.
Figure 6.9: Information flow for mobile initiated failed USSD Request
6.3 Information stored in the HLRThe HLR shall not store any information specific to the use of USSD, although information may be stored for serviceswhich are offered by USSD applications.
6.4 Information stored in the VLRThe VLR shall not store any information specific to the use of USSD, although information may be stored for serviceswhich are offered by USSD applications.
ETSI
TS 100 549 V6.0.0 (1999-01)31(GSM 03.90 version 6.0.0 Release 1997)
6.5 HandoverHandover will have no impact on the operation of this service.
6.6 Cross-phase compatibilityIf, when a Phase 2 MS sends a mobile initiated USSD request, any network entity is of Phase 1, the request will berejected. If it is possible to encode the content of the USSD request using the Phase 1 protocol, the MS shall repeat therequest, using the Phase 1 protocol.
A Mobile initiated USSD request from a Phase 1 MS uses the Phase 1 protocol. On receipt of such a request, theapplication shall also use the Phase 1 protocol when sending the response.
A Phase 2 network shall not send network initiated requests or notifications during a mobile initiated USSD request ifthe MS or any network entity involved in the operation is of Phase 1.
ETSI
TS 100 549 V6.0.0 (1999-01)32(GSM 03.90 version 6.0.0 Release 1997)
Annex A (informative):Change Request History
Statusof
Technical Specification GSM 03.90
Date Version Remarks
No Phase 1 version
October 1993 version 4.0.0 TS approved by SMG#08
January 1994 version 4.0.1 TS frozen for Phase 2 by SMG#09TS changed to draft prETS 300 549
October 1994 version 4.0.2 TS changed to final draft prETS 300 549
January 1995 version 4.0.3 TS changed to ETS 300 549 First edition
July 1995 version 4.1.0 CR 03.90-A002 (category 2) approved by SMG#15
August 1996 version 4.1.1 TS changed to ETS 300 549 Second edition
December 1996 version 5.0.0 ETS changed to GTS for release '96
SMG#27 version 6.0.0 Release 1997 version
Text and flows: WinWord6Stylesheet: etsiw_70.dot
ETSI
TS 100 549 V6.0.0 (1999-01)33(GSM 03.90 version 6.0.0 Release 1997)
History
Document history
V6.0.0 January 1999 Publication
ISBN 2-7437-2781-0Dépôt légal : Janvier 1999
