标准摘要
[中文适用范围]： 本国际标准规定了短消息服务（SMS）。 SMS 使用户能够向另一个用户发送短消息(SM) 或从另一个用户接收短消息(SM)。 该服务基于 GSM 03.40。 本国际标准中描述的服务中心功能等同于 GSM 03.40 中服务中心的功能。 因此，为了与GSM网络互操作，只需要实现QSIG接口。 注 1 – 不排除与其他空中接口的互通，但不属于本国际标准的范围。 注 2 – 短消息服务是一种特殊类型的基本服务，但在本文档中以补充服务的形式进行描述。 根据ETS 300 387中描述的方法，补充服务规范分三个阶段产生。 该国际标准包含SMS的第一阶段和第二阶段规范。 第一阶段规范（第 6 条）指定了 PISN 用户所看到的服务。 第 2 阶段规范（第 7 条）标识了服务中涉及的功能实体以及它们之间的信息流。 [外文原描述]： 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.
英文名称Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Short message service