ISO/IEC 21990:2002

INTERNATIONAL ISO/IEC
STANDARD 21990
First edition
2002-07-15

Information technology —
Telecommunications and information
exchange between systems — Private
Integrated Services Network —
Inter-exchange signalling protocol —
Short message service
Technologies de l'information — Télécommunications et échange
d'information entre systèmes — Réseaux privés avec intégration de
services — Protocole de signalisation entre commutateurs — Service de
message court




Reference number
ISO/IEC 21990:2002(E)
©
ISO/IEC 2002

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ISO/IEC 21990:2002(E)
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©  ISO/IEC 2002
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ISO/IEC 21990:2002(E)
Contents

Foreword v
Introduction vi
1 Scope 1
2 Conformance 1
3 Normative references 1
4 Definitions 2
4.1 External definitions 2
4.2 Other definitions 3
4.2.1 Receiving User Case 3
4.2.2 Receiving User PINX 3
4.2.3 Sending User PINX 3
4.2.4 Sending User Message Centre 3
4.2.5 Short Message Entity 3
4.2.6 Receiving User Message Centre 3
5 Acronyms 3
6 Signalling Protocol for the support of SMS 3
6.1 SMS description 3
6.2 SMS operational requirements 4
6.2.1 Provision/Withdrawal 4
6.2.2 Requirements on a Sending User PINX 4
6.2.3 Requirements on a Sending User Message Centre 4
6.2.4 Requirements on a Service Centre 4
6.2.5 Requirements on a Receiving User PINX 4
6.2.6 Requirements on a Receiving User Message Centre 4
6.3 SMS coding requirements 5
6.3.1 Operations 5
6.3.2 Information Elements 11
6.3.3 Messages 11
6.4 SMS State definitions 11
6.4.1 States at the Sending User PINX and at the Sending User Message Centre 11
6.4.2 States at a Service Centre 12
6.4.3 States at a Receiving User PINX 12
6.4.4 States at a Receiving User Message Centre 12
6.5 SMS signalling procedures 13
6.5.1 Actions at a Sending User PINX/ Sending User Message Centre 13
6.5.2 Actions at a Sending User Message Centre 15
6.5.3 Actions at a Service Centre 15
6.5.4 Actions at a Receiving User PINX 18
6.5.5 Actions at a Receiving User Message Centre 19
6.6 SMS impact on interworking with public ISDNs 21
6.7 SMS impact on interworking with non-ISDNs 21
6.8 Protocol Interactions between SMS and supplementary services and ANFs 21
6.8.1 Calling Line Identification Presentation (SS-CLIP) 21
6.8.2 Connected Line Identification Presentation (SS-COLP) 21
6.8.3 Calling/ Connected Line Identification Restriction (SS-CLIR) 21
6.8.4 Calling Name Identification Presentation (SS-CNIP) 21
6.8.5 Calling/ Connected Name Identification Restriction (SS-CNIR) 21
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ISO/IEC 21990:2002(E)
6.8.6 Connected Name Identification Presentation (SS-CONP) 21
6.8.7 Completion of Calls to Busy Subscriber (SS-CCBS) 21
6.8.8 Completion of Calls on No Reply (SS-CCNR) 21
6.8.9 Call Transfer (CT) 21
6.8.10 Call Forwarding Unconditional (SS-CFU) 22
6.8.11 Call Forwarding Busy (SS-CFB) 22
6.8.12 Call Forwarding No Reply (SS-CFNR) 22
6.8.13 Call Deflection (SS-CD) 22
6.8.14 Path Replacement (ANF-PR) 22
6.8.15 Call Offer (SS-CO) 22
6.8.16 Call Intrusion (SS-CI) 22
6.8.17 Do Not Disturb (SS-DND) 22
6.8.18 Do Not Disturb Override (SS-DNDO) 22
6.8.19 Advice of charge (SS-AOC) 22
6.8.20 Recall (SS-RE) 22
6.8.21 Call Interception (ANF-CINT) 22
6.8.22 Transit Counter (ANF-TC) 22
6.8.23 Route Restriction Class (ANF-RRC) 22
6.8.24 Message Waiting Indication (SS-MWI) 22
6.8.25 Cordless Terminal Location Registration (SS-CTLR) 22
6.8.26 Cordless Terminal Mobility Incoming Call (SS-CTMI) 22
6.8.27 Cordless Terminal Mobility Outgoing Call (SS-CTMO) 22
6.8.28 Authentication of a CTM user (SS-CTAT) 22
6.8.29 Authentication of the PISN (SS-CTAN) 22
6.8.30 Private User Mobility Incoming Call (ANF-PUMI) 22
6.8.31 Private User Mobility Outgoing Call (ANF-PUMO) 23
6.8.32 Private User Mobility Registration (SS-PUMR) 23
6.8.33 Common Information (ANF-CMN) 23
6.8.34 Call Priority Interruption (Protection) (SS-CPI(P)) 23
6.8.35 Single Step Call Transfer (SS-SSCT) 23
6.8.36 Simple Dialog (SS-SD) 23
6.8.37 Call Identification and Call Linkage (ANF-CIDL) 23
6.9 SS-SMS Parameter values (Timers) 23
6.9.1 Timer T1 23
6.9.2 Timer T2 23
6.9.3 Timer T3 23
6.9.4 Timer T4 23
6.9.5 Timer T5 23
6.9.6 Timer T6 23
6.9.7 Timer T7 23
Annexes
A - Protocol Implementation Conformance Statement (PICS) Proforma 24
B - Examples of message sequences 30
C - Specification and Description Language (SDL) representation of procedures 39
D - Mapping of QSIG-PDUs on GSM-PDUs 56
E - Description of APDU elements 60
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ISO/IEC 21990:2002(E)
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the
specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the
development of International Standards through technical committees established by the respective organization to deal with
particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other
international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In the
field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
The main task of the joint technical committee is to prepare International Standards. Draft International Standards adopted by
the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires
approval by at least 75 % of the national bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights.
ISO and IEC shall not be held responsible for identifying any or all such patent rights.
ISO/IEC 21990 was prepared by ECMA (as ECMA-325) and was adopted, under a special “fast-track procedure”, by Joint
Technical Committee ISO/IEC JTC 1, Information technology, in parallel with its approval by national bodies of ISO and IEC.
Annexes A and E form a normative part of this International Standard. Annexes B, C and D are for information only.
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ISO/IEC 21990:2002(E)
Introduction
This International Standard is one of a series of Standards defining services and signalling protocols applicable to Private
Integrated Services Digital Networks (PISNs). The series uses ISDN concepts as developed by ITU-T and conforms to the
framework of International Standards on Open Systems Interconnection as defined by ISO/IEC.
This International Standard specifies the signalling protocol for use at the Q reference point in support of the Short Message
Service. The protocol defined in this Standard forms part of the PSS1 protocol (informally known as QSIG).
This International Standard is based upon the practical experience of ECMA member companies and the results of their active
and continuous participation in the work of ISO/IEC JTC 1, ITU-T, ETSI and other international and national standardization
bodies. It represents a pragmatic and widely based consensus.

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INTERNATIONAL STANDARD ISO/IEC 21990:2002(E)

Information technology — Telecommunications and information
exchange between systems — Private Integrated Services Network —
Inter-exchange signalling protocol — Short message service
1 Scope
This International Standard specifies the signalling protocol for the support of the Short Message Service (SMS) at the Q
reference point between Private Integrated services Network eXchanges (PINXs) connected together within a Private
Integrated Services Network (PISN).
This service is based on GSM 03.40. The Service Centre functionality described in this International Standard is equal to the
functionality of a Service Centre in GSM 03.40. Thus, for interoperability with a GSM network, it is only necessary to
implement a QSIG interface.
NOTE 1 - The interworking with other air interfaces is not precluded, but is outside the scope of this International Standard.
NOTE 2 - The Short Message Service is a special type of basic service but is described in the present document as a supplementary service.
The Short Message Service is a service which permits a served user to send a message of limited size to another user in the
same PISN or another network.
The Q reference point is defined in ISO/IEC 11579-1.
Service specifications are produced in three stages and according to the method specified in ETS 300 387. This International
Standard contains the stage 3 specification for the Q reference point and satisfies the requirements identified by the stage 1 and
stage 2 specifications in ISO/IEC 21989.
The signalling protocol for SMS operates on top of the signalling protocol for the connection oriented call independent APDU
transport mechanism and uses certain further aspects of the generic procedures for the control of supplementary services
specified in ISO/IEC 11582.
This International Standard also specifies additional signalling protocol requirements for the support of interactions at the Q
reference point between SMS and supplementary services and ANFs.
This International Standard is applicable to PINXs which can be interconnected to form a PISN.
2 Conformance
In order to conform to this International Standard, a PINX shall satisfy the requirements identified in the Protocol
Implementation Conformance Statement (PICS) proforma in annex A.
3 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this
International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not
apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of
applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the
normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards.
ISO 8601:2000, Data elements and interchange formats - Information interchange - Representation of dates and times
ISO/IEC 10646-1:2000, Information technology - Universal Multiple-Octet Coded Character Set (UCS) - Part 1: Architecture
and Basic Multilingual Plane
ISO/IEC 11572:2000, Information technology - Telecommunications and information exchange between systems - Private
Integrated Services Network - Circuit mode bearer services - Inter-exchange signalling procedures and protocol
ISO/IEC 11579-1:1994, Information technology - Telecommunications and information exchange between systems - Private
Integrated Services Network - Part 1: Reference configuration for PISN exchanges (PINX)
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ISO/IEC 21990:2002(E)
ISO/IEC 11582:1995, Information technology - Telecommunications and information exchange between systems - Private
Integrated Services Network - Generic functional protocol for the support of supplementary services - Inter-exchange
signalling procedures and protocol
ISO/IEC 13868:1995, Information technology - Telecommunications and information exchange between systems - Private
Integrated Services Network - Inter-exchange signalling protocol - Name identification supplementary services
ISO/IEC 15506:2000, Information technology - Telecommunications and information exchange between systems - Private
Integrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Message Waiting Indication Supplementary
Service
ISO/IEC 21989:2002, Information technology - Telecommunications and information exchange between systems - Private
Integrated Services Network - Specification, functional model and information flows - Short message service
ETSI GTS GSM 03.38, Digital cellular telecommunications systems (Phase 2+) (GSM); Alphabets and language-specific
information
ETSI TS 100 901, Digital cellular telecommunications systems (Phase 2+); Technical realization of the Short Message Service
(SMS) (GSM 03.40)
ETSI TS 100 942, Digital cellular telecommunications systems (Phase 2+) (GSM); Point-to-Point (PP) Short Message Service
(SMS) support on mobile radio interface (GSM 04.11)
ETSI TS 101 032, Digital cellular telecommunications systems (Phase 2+) (GSM); Compression algorithm for text messaging
services (GSM 03.42)
ETSI ETS 300 387, Private Telecommunication Network (PTN); Method for the specification of basic and supplementary
services
ETSI ETS 300 599, Digital cellular telecommunications systems (Phase 2) (GSM); Mobile Application Part (MAP)
specification (GSM 09.02)
ITU-T Rec. I.112:1993, Vocabulary of terms for ISDNs
ITU-T Rec. I.210:1993, Principles of telecommunication services supported by an ISDN and the means to describe them
ITU-T Rec. Z.100:1999, Specification and description language (SDL)
4 Definitions
For the purposes of this International Standard, the following definitions apply.
4.1 External definitions
This International Standard uses the following terms defined in other documents:
– Application Protocol Data Unit (APDU) (ISO/IEC 11582)
– Call, Basic Call (ISO/IEC 11582)
– Call Independent Signalling Connection (ISO/IEC 11582)
– Command (ISO/IEC 21989)
– End PINX (ISO/IEC 11582)
– Message Centre (ISO/IEC 21989)
– Message Centre Case (ISO/IEC 21989)
– Private Integrated services Network eXchange (PINX) (ISO/IEC 11579-1)
– Private Integrated Services Network (PISN) (ISO/IEC 11579-1)
– Receiving User (ISO/IEC 21989)
– Sending User (ISO/IEC 21989)
– Service Centre (ISO/IEC 21989)
– Short Message (ISO/IEC 21989)
– Short Message Waiting Data (ISO/IEC 21989)
– Status Report (ISO/IEC 21989)
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ISO/IEC 21990:2002(E)
– Signalling (ITU-T Rec. I.112)
– Supplementary Service (ITU-T Rec. I.210)
– Terminal Case (ISO/IEC 21989)
4.2 Other definitions
4.2.1 Receiving User Case
The configuration when the Terminal Case is provided for the Receiving User, i.e. no Receiving User Message Centre is
involved in the SMS procedures.
4.2.2 Receiving User PINX
The Receiving User PINX is the PINX serving the Receiving User.
4.2.3 Sending User PINX
The Sending User PINX is the PINX serving the Sending User.
4.2.4 Sending User Message Centre
The Message Centre serving the Sending User.
4.2.5 Short Message Entity
A generic term for an entity that is capable of handling one or more SMS specific procedures. This can be either the Sending
Users terminal, the Sending User PINX, the Sending User Message Centre, the Service Centre, the Receiving User Message
Centre, the Receiving User PINX or the Receiving Users terminal.
4.2.6 Receiving User Message Centre
The Message Centre serving the Receiving User.
5 Acronyms
APDU Application Protocol Data Unit
ASN.1 Abstract Syntax Notation One
GSM Global System for Mobile communication
ISDN Integrated Services Digital Network
PICS Protocol Implementation Conformance Statement
PINX Private Integrated services Network eXchange
PISN Private Integrated Services Network
SDL Specification and Description Language
SIM Subscriber Identity Module
SM Short Message
SMS Short Message Service
SMSC Short Message Service Centre
SMWD Short Message Waiting Data
SS Supplementary Service
TE Terminal Equipment
UDH User Data Header
6 Signalling Protocol for the support of SMS
6.1 SMS description
Short Message Service is a service which is offered to a user in a PISN and which enables the user to send and receive Short
Messages to and from another user in a PISN or in another (e.g. GSM) network.
The PISN transfers the Short Message from the Sending User to an SC and from the SC to the Receiving User.
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ISO/IEC 21990:2002(E)
6.2 SMS operational requirements
6.2.1 Provision/Withdrawal
Provision and withdrawal shall be in accordance with 6.2.1 of ISO/IEC 21989.
6.2.2 Requirements on a Sending User PINX
Generic procedures for the call independent control (connection oriented) of supplementary services, as specified in
ISO/IEC 11582 for an Originating-PINX and for a Terminating-PINX, shall apply.
6.2.3 Requirements on a Sending User Message Centre
Generic procedures for the call independent control (connection oriented) of supplementary services, as specified in
ISO/IEC 11582 for an Originating-PINX and for a Terminating-PINX, shall apply.
6.2.4 Requirements on a Service Centre
Generic procedures for the call independent control (connection oriented) of supplementary services, as specified in
ISO/IEC 11582 for an Originating-PINX and for a Terminating-PINX, shall apply.
6.2.5 Requirements on a Receiving User PINX
Generic procedures for the call independent control (connection oriented) of supplementary services, as specified in
ISO/IEC 11582 for an Originating-PINX and for a Terminating-PINX , shall apply.
6.2.6 Requirements on a Receiving User Message Centre
Generic procedures for the call independent control (connection oriented) of supplementary services, as specified in
ISO/IEC 11582 for an Originating-PINX and for a Terminating-PINX, shall apply.
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ISO/IEC 21990:2002(E)
6.3 SMS coding requirements
6.3.1 Operations
The following operations defined in Abstract Syntax Notation One (ASN.1) in table 1 shall apply.
Table 1 - Operations in Support of SMS
Short-Message-Service-Operations-asn1-97
{iso(1) identified-organization(3) icd-ecma(12) standard(0) qsig-short-message-service(325) short-message-service-
operations-asn1-97(1)}

DEFINITIONS::=
BEGIN
IMPORTS
OPERATION,
ERROR
FROM Remote-Operations-Information-Objects
{joint-iso-itu-t (2) remote-operations(4) informationObjects(5) version1(0)}
EXTENSION, Extension{}
FROM Manufacturer-specific-service-extension-class-asn1-97
{iso(1) standard(0) pss1-generic-procedures(11582) msi-class-asn1-97(11)}
Name
FROM Name-Operations-asn1-97
{iso(1) standard(0) pss1-name(13868) name-operations-asn1-97(1)}
supplementaryServiceInteractionNotAllowed
FROM General-Error-List
{ccitt recommendation q 950 general-error-list(1)}
PartyNumber
FROM Addressing-Data-Elements-asn1-97
{iso(1) standard(0) pss1-generic-procedures(11582) addressing-data-elements-asn1-97(20)};

--TYPE DEFINITIONS FOR SMS OPERATIONS FOLLOW

Sms-Operations OPERATION ::={

 smsSubmit | smsDeliver | smsStatusReport | smsCommand | scAlert}

smsSubmit OPERATION ::= {
 -- sent from the Sending User PINX/ Sending User Message Centre to the Service Centre
  ARGUMENT SmsSubmitArg
  RESULT SmsSubmitRes
  ERRORS {smsSubmitError |
   unspecified}
  CODE local:107}

smsDeliver OPERATION ::= {
 -- sent from the Service Centre to the Receiving User PINX or to the Receiving User Message Centre
  ARGUMENT SmsDeliverArg
  RESULT SmsDeliverRes
  ERRORS {smsDeliverError |
   unspecified}
  CODE local:108}

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ISO/IEC 21990:2002(E)
Table 1 - Operations in Support of SMS (continued)
smsStatusReport OPERATION ::= {
 -- sent from the Service Centre to the Sending User PINX or to the Sending User Message Centre
  ARGUMENT SmsStatusReportArg
  RESULT SmsStatusReportRes
  ERRORS {smsStatusReportError |
   unspecified}
  CODE local:109}

smsCommand OPERATION ::= {
 -- sent from the Sending User PINX or the Sending User Message Centre to the Service Centre
  ARGUMENT SmsCommandArg
  RESULT SmsCommandRes
  ERRORS {smsCommandError |
   unspecified}
  CODE local:110}

scAlert OPERATION ::= {
 -- sent from the Receiving User PINX or the Receiving User Message Centre to the Service Centre
  ARGUMENT ScAlertArg
  RESULT DummyRes
  ERRORS {unspecified}
  CODE local:111}

--TYPE DEFINITIONS FOR SMS DATA TYPES FOLLOW

SmsSubmitArg ::= SEQUENCE {
 destinationAddress PartyNumber,
 originatingAddress PartyNumber,
 messageReference MessageReference,
 smSubmitParameter SmSubmitParameter,
 userData  UserData,
 smsExtension SmsExtension   OPTIONAL}

SmsSubmitRes ::= SEQUENCE {
 serviceCentreTimeStamp ServiceCentreTimeStamp,
 protocolIdentifier [3] IMPLICIT ProtocolIdentifier  OPTIONAL,
 userData  [4] IMPLICIT UserData  OPTIONAL,
 smsExtension SmsExtension   OPTIONAL}

SmsDeliverArg ::= SEQUENCE {
 originatingAddress PartyNumber,
 destinationAddress PartyNumber,
 originatingName Name   OPTIONAL,
 smDeliverParameter SmDeliverParameter,
 userData  UserData,
 smsExtension SmsExtension   OPTIONAL}

SmsDeliverRes ::= SEQUENCE {
 smsDeliverResponseChoice SmsDeliverResChoice,
 smsExtension  SmsExtension  OPTIONAL}

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ISO/IEC 21990:2002(E)
Table 1 - Operations in Support of SMS (continued)
SmsStatusReportArg ::= SEQUENCE {
 messageReference MessageReference,
 serviceCentreTimeStamp ServiceCentreTimeStamp,
 dischargeTime  DischargeTime,
 recipientAddress PartyNumber,
 recipientName [10] Name   OPTIONAL,
 destinationAddress PartyNumber,
 status  Status,
 priority  [11] IMPLICIT BOOLEAN DEFAULT FALSE,
 moreMessagesToSend   [12] IMPLICIT BOOLEAN DEFAULT FALSE,
 statusReportQualifier    [13] IMPLICIT BOOLEAN DEFAULT FALSE,
 protocolIdentifier ProtocolIdentifier   OPTIONAL,
 userData  UserData   OPTIONAL,
 smsExtension SmsExtension   OPTIONAL}

SmsStatusReportRes ::= SEQUENCE {
 smsStatusReportResponseChoice SmsStatusReportResponseChoice,
 smsExtension  SmsExtension  OPTIONAL}

SmsCommandArg ::= SEQUENCE {
 destinationAddress PartyNumber,
 messageReference  MessageReference,
 messageNumber  MessageReference,
 protocolIdentifier  ProtocolIdentifier,
 commandType  CommandType,
 commandData  CommandData  OPTIONAL,
 statusReportRequest BOOLEAN     OPTIONAL,
 smsExtension  SmsExtension  OPTIONAL}

SmsCommandRes ::= SEQUENCE {
 serviceCentreTimeStamp ServiceCentreTimeStamp,
 protocolIdentifier  ProtocolIdentifier  OPTIONAL,
 userData  UserData  OPTIONAL,
 smsExtension  SmsExtension    OPTIONAL}

ScAlertArg ::= SEQUENCE {
 originatingAddress PartyNumber,
 smsExtension  SmsExtension  OPTIONAL}

DummyRes ::= CHOICE{
 null  NULL,
 smsExtension SmsExtension}

SmSubmitParameter ::= SEQUENCE {
 protocolIdentifier    ProtocolIdentifier,
 validityPeriod      ValidityPeriod   OPTIONAL,
 statusReportRequest [11] IMPLICIT BOOLEAN DEFAULT FALSE,
 replyPath [12] IMPLICIT BOOLEAN DEFAULT FALSE,
 rejectDuplicates [13] IMPLICIT BOOLEAN DEFAULT FALSE}

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ISO/IEC 21990:2002(E)
Table 1 - Operations in Support of SMS (continued)
SmDeliverParameter ::= SEQUENCE {
 protocolIdentifier ProtocolIdentifier,
 serviceCentreTimeStamp ServiceCentreTimeStamp,
 priority  [11] IMPLICIT BOOLEAN DEFAULT FALSE,
 moreMessagesToSend [12] IMPLICIT BOOLEAN DEFAULT FALSE,
 statusReportIndication [13] IMPLICIT BOOLEAN DEFAULT FALSE,
 replyPath [14] IMPLICIT BOOLEAN DEFAULT FALSE}

SmsDeliverResChoice ::= CHOICE {
 null  NULL,
 protocolIdentifier ProtocolIdentifier,
 userData  [0] IMPLICIT UserData,
 resChoiceSeq [1] IMPLICIT ResChoiceSeq}

ResChoiceSeq ::= SEQUENCE {
 protocolIdentifier ProtocolIdentifier,
 userData  UserData}

SmsStatusReportResponseChoice ::= CHOICE {
 null  NULL,
 protocolIdentifier ProtocolIdentifier,
 userData  [0] IMPLICIT UserData,
 resChoiceSeq  [1] IMPLICIT ResChoiceSeq}

MessageReference ::= INTEGER(0.255)

SmsExtension ::= CHOICE{
 single  [1]IMPLICIT Extension{{SmsExtSet}},
 multiple  [2]IMPLICIT SEQUENCE OF
    Extension{{SmsExtSet}}
  }

SmsExtSet EXTENSION ::= {.}

ProtocolIdentifier ::= INTEGER (0.127)
  -- definition of the ProtocolIdentifier values and default value can be found in annex E section
  -- E.1.2.1

ServiceCentreTimeStamp ::= GeneralizedTime(SIZE(12.19))
  -- this date and time representation follows ISO 8601

DischargeTime  ::= GeneralizedTime(SIZE(12.19))
  -- this date and time representation follows ISO 8601

ValidityPeriod ::= CHOICE{
 validityPeriodRel [0] IMPLICIT ValidityPeriodRel,
 validityPeriodAbs [1] IMPLICIT ValidityPeriodAbs,
 validityPeriodEnh [2] IMPLICIT ValidityPeriodEnh}

ValidityPeriodAbs ::= GeneralizedTime(SIZE(12.19))
  -- this date and time representation follows ISO 8601

ValidityPeriodRel ::= INTEGER(0.255)
  -- the rules for the encoding of ValidityPeriodRel are shown in annex E section E.1.2.2
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ISO/IEC 21990:2002(E)
Table 1 - Operations in Support of SMS (continued)
ValidityPeriodEnh ::= SEQUENCE{
 singleShotSM BOOLEAN DEFAULT FALSE,
 enhancedVP EnhancedVP   OPTIONAL}

EnhancedVP ::= CHOICE{
 validityPeriodRel [0] IMPLICIT ValidityPeriodRel,
 validityPeriodSec [1] IMPLICIT INTEGER(0.255),
 validityPeriodSemi [2] IMPLICIT ValidityPeriodSemi}

ValidityPeriodSemi ::= OCTET STRING (SIZE(3))
  -- Validity Period is relative in semi-octet representation, see ETSI TS 100 901, section 9.1.2.3
  -- and section 9.2.3.12.3

UserData ::= SEQUENCE{
userDataHeader  [0] IMPLICIT UserDataHeader  OPTIONAL,
class  [1] IMPLICIT INTEGER (0.3)  OPTIONAL,
compressed  [2] IMPLICIT BOOLEAN DEFAULT FALSE,
shortMessageText ShortMessageText}

ShortMessageText ::= SEQUENCE{
shortMessageTextType ShortMessageTextType,
shortMessageTextData ShortMessageTextData}

ShortMessageTextType ::= INTEGER{
  iA5Coded (0), -- ShortMessageTextData shall contain data according to
  octetCoded (1), -- the type given in ShortMessageTextType, for further
  uniCoded (2), -- details see annex E. 1.3.4.
  compressedCoded (3)} (0.8)

ShortMessageTextData ::= OCTET STRING (SIZE(0.140))

Status ::=  INTEGER (0.255)
  -- definition of status values can be found in section E.7.6 in annex E

CommandType ::= INTEGER{
 enquiry   (0),
 cancelSRR   (1),
 deletePreviouslySubmittedSM  (2),
 enableSRRrelatingToPreviouslySubmittedSM (3)} (0.255)

CommandData ::= OCTET STRING (SIZE(0.157))

FailureCause ::= INTEGER (0.255)
 -- definition for failureCause values can be found in section E.3.1 in annex E

UserDataHeader ::= SEQUENCE OF UserDataHeaderChoice

© ISO/IEC 2002 – All rights reserved 9

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ISO/IEC 21990:2002(E)
Table 1 - Operations in Support of SMS (continued)
UserDataHeaderChoice ::= CHOICE{
smscControlParameterHeader [0] IMPLICIT SmscControlParameterHeader,
concatenated8BitSMHeader [1] IMPLICIT Concatenated8BitSMHeader,
concatenated16BitSMHeader [2] IMPLICIT Concatenated16BitSMHeader,
applicationPort8BitHeader  [3] IMPLICIT ApplicationPort8BitHeader,
applicationPort16BitHeader [4] IMPLICIT ApplicationPort16BitHeader,
dataHeaderSourceIndicator [5] IMPLICIT DataHeaderSourceIndicator,
wirelessControlHeader  [6] IMPLICIT WirelessControlHeader,
genericUserValue  [99] IMPLICIT GenericUserValue}

SmscControlParameterHeader ::= BIT STRING {
 sRforTransactionCompleted (0),
 sRforPermanentError  (1),
 sRforTempErrorSCnotTrying (2),
 sRforTempErrorSCstillTrying (3),
 cancelSRRforConcatenatedSM (6),
 includeOrigUDHintoSR  (7)} (SIZE(8))

Concatenated8BitSMHeader ::= SEQU
...