非结构化补充业务数据中心的设计与实现

Design and Implementation of Unstructured Supplementary Service Data Center

该文首先介绍GSM非结构化补充业务数据(USSD)的原理,然后介绍了非结构化补充业务数据中心(USSDC)的组网方式及对外接口,最后通过介绍USSDC的物理结构和逻辑结构,提出了USSDC的设计思路和实现方案。

Principle of Unstructured Supplementary Service Data(USSD)over GSM is briefly introduced,the position of USSD Center(USSDC)in the telecommunication networks is introduced in the second together with the protocols used by USSDC when transmitting packets between telecommunication networks and TCP/IP network.At the end by introducing physical and logical structure,the scheme of the design and implementation of USSDC is explained