本TS的目的是定义一组建议的电信业务和承载业务的补充业务，这些业务将由GSM PLMN与其他网络一起支持，作为定义所需网络能力的基础。GSM 02.80系列规范中包含了对不同补充业务的描述。GSM 02.04或GSM 02.80系列中未涵盖的补充业务如果需要修改GSM信令规范，则不能单方面引入任何GSM PLMN。规范GSM 03.11和04.10中描述了补充业务的技术实现。

The purpose of this TS is to define a recommended set of supplementary services to the Teleservices and Bearer services which will be supported by a GSM PLMN in connection with other networks as a basis for the definition of the network capabilities required. The descriptions of the different supplementary services are contained in specifications GSM 02.80 series. Supplementary services not covered in GSM 02.04 or GSM 02.80 series cannot be introduced unilaterally in any GSM PLMN if they require modification of the GSM signalling Specifications. Technical realization of supplementary services is described in Specifications GSM 03.11 and 04.10.