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3GPP协议的发展是以GSMMAP为基础,而核心网则沿用了GSM/GPRS的定义,可以实现网络的平滑过渡,有利于迅速而便捷地引入新的无线技术。第三代移动通信系统的核心网必须同时具备电路交换和分组交换的功能。
The development of 3GPP agreement is based on GSMMAP, and the core network follows the definition of GSM / GPRS, can realize the smooth transition of the network, help to introduce the new wireless technology rapidly and conveniently. The core network of the third generation of mobile communication system must have the function of circuit exchange and packet exchange at the same time.