ISO/IEC 21989:2002 PDF

Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Specification, functional model and information flows — Short message service

First page of standard ISO/IEC 21989:2002

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Title (English):

ISO/IEC 21989:2002

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 39
Publication date:: July 11, 2002
Edition:: ISO/IEC IS 21989 edition 1 version 1
ICS:: 33.040.35

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Description (English):

ISO/IEC 21989:2002 specifies the Short Message Service (SMS). SMS enables a user to send and receive Short Messages (SMs) to and from another user. This service is based on GSM 03.40. The Service Centre functionality described in ISO/IEC 21989:2002 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 kind of basic service but is described in this document in the style of a supplementary service. Supplementary service specifications are produced in three stages, according to the method described in ETS 300 387. ISO/IEC 21989:2002 contains the stage 1 and stage 2 specifications of SMS. The stage 1 specification specifies the service as seen by users of PISNs. The stage 2 specification identifies the functional entities involved in the service and the information flows between them.

Technical details

Technical committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
SKU: ISO/IEC 21989:2002

Abstract

Overview

ISO/IEC 21989:2002 specifies the Short Message Service (SMS) for Private Integrated Services Networks (PISNs). It defines both the user-visible service (stage 1) and the functional model with information flows (stage 2). The standard bases Service Centre functionality on GSM 03.40, so interoperability with a GSM network requires implementing a QSIG interface. Interworking with other air interfaces is outside the scope.

Key topics

Service definition (Stage 1): SMS behaviour as seen by PISN users - sending/receiving Short Messages (SMs), Validity Period, Status Reports and Commands.
Functional model (Stage 2): Identification of functional entities (Service Centre / SC, Message Centre, terminals), allocation to physical equipment and detailed information flows between entities.
Service Centre (SMSC) functionality: store-and-forward delivery, retry logic, responsibility until delivery or expiration, generation of Status Reports, handling of Commands.
Short Message Waiting Data (SMWD) and ScAlert: mechanisms to notify SCs when a previously unreachable receiving user becomes reachable or has memory again.
Operational cases: Terminal Case vs Message Centre Case (who handles SMS procedures) and interactions with other supplementary services.
Conformance guidance: Stage 3 (not included) must define signalling protocols and equipment behaviour adequate to support stage 1 and 2 aspects relevant to the interface or equipment.

Practical applications

Implementing SMS functionality in enterprise PBXs and PISNs for internal and inter-network messaging.
Designing or deploying Service Centre (SMSC) solutions that mirror GSM 03.40 behaviour for private networks.
Enabling interworking between PISN SMS and public mobile networks using a QSIG interface for interoperability with GSM SMSCs.
Implementing message waiting indicators and store-and-forward message handling for users and mobile/desktop terminals.
Using the stage 2 information flows and functional model as the basis for developing stage 3 protocol specifications, testing plans, and conformance testing.

Who should use this standard

Telecom equipment vendors and PBX manufacturers implementing SMS in PISNs
Network architects and system integrators planning SMS interworking with mobile networks
Test labs and standards bodies developing stage 3 protocol specifications
Service providers deploying enterprise messaging and message-centre features

Related standards

GSM 03.40 / ETSI TS 100 901 (GSM SMS technical realization)
GSM 03.38 (alphabets and encoding)
ISO/IEC 11574, ISO/IEC 11579‑1 (PISN addressing and PINX)
ETSI ETS 300 387 (method for supplementary services)

Keywords: ISO/IEC 21989:2002, Short Message Service, SMS, PISN, Service Centre, QSIG, GSM 03.40, SMSC, Short Message Waiting Data.

Related standards

Mentioned in the description and other ISO standards

Abstract

Overview

Key topics

Service definition (Stage 1): SMS behaviour as seen by PISN users - sending/receiving Short Messages (SMs), Validity Period, Status Reports and Commands.
Functional model (Stage 2): Identification of functional entities (Service Centre / SC, Message Centre, terminals), allocation to physical equipment and detailed information flows between entities.
Service Centre (SMSC) functionality: store-and-forward delivery, retry logic, responsibility until delivery or expiration, generation of Status Reports, handling of Commands.
Short Message Waiting Data (SMWD) and ScAlert: mechanisms to notify SCs when a previously unreachable receiving user becomes reachable or has memory again.
Operational cases: Terminal Case vs Message Centre Case (who handles SMS procedures) and interactions with other supplementary services.
Conformance guidance: Stage 3 (not included) must define signalling protocols and equipment behaviour adequate to support stage 1 and 2 aspects relevant to the interface or equipment.

Practical applications

Implementing SMS functionality in enterprise PBXs and PISNs for internal and inter-network messaging.
Designing or deploying Service Centre (SMSC) solutions that mirror GSM 03.40 behaviour for private networks.
Enabling interworking between PISN SMS and public mobile networks using a QSIG interface for interoperability with GSM SMSCs.
Implementing message waiting indicators and store-and-forward message handling for users and mobile/desktop terminals.
Using the stage 2 information flows and functional model as the basis for developing stage 3 protocol specifications, testing plans, and conformance testing.

Who should use this standard

Telecom equipment vendors and PBX manufacturers implementing SMS in PISNs
Network architects and system integrators planning SMS interworking with mobile networks
Test labs and standards bodies developing stage 3 protocol specifications
Service providers deploying enterprise messaging and message-centre features

Related standards

GSM 03.40 / ETSI TS 100 901 (GSM SMS technical realization)
GSM 03.38 (alphabets and encoding)
ISO/IEC 11574, ISO/IEC 11579‑1 (PISN addressing and PINX)
ETSI ETS 300 387 (method for supplementary services)

Keywords: ISO/IEC 21989:2002, Short Message Service, SMS, PISN, Service Centre, QSIG, GSM 03.40, SMSC, Short Message Waiting Data.

ISO/IEC 21989:2002 PDF

Technical details

Abstract

Overview

Key topics

Practical applications

Who should use this standard

Related standards

Related standards

Abstract

Overview

Key topics

Practical applications

Who should use this standard

Related standards

Related standards

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