帧中继技术是一种成熟的快速分组交换技术，而AT M技术则是宽带网络的重要技术。
Frame Relay is a kind of mature fast switch technology, while ATM technology is one of the important broadband technologies.
软交换技术是一个能够提供下一代分组通信——包括语音、宽带和无线网络的平台。
Softswitch is a technique that can supply next-generation packet communications including speech, wideband and wireless networks.
为了适应网络宽带化、分组化的发展趋势，PSTN中的数字程控交换要逐步演进为包含ATM交换和IP功能的综合业务交换平台。
To adapt to the broadband and packetized network development trend, the digital SPG switching paradigm in PSTN should be gradually evolved to a combined ATM and IP service switching platform.
为了适应网络宽带化、分组化的发展趋势，PSTN中的数字程控交换要逐步演进为包含ATM交换和IP功能的综合业务交换平台。
To adapt to the broadband and packetized network development trend, the digital SPG switching paradigm in PSTN should be gradually evolved to a combined ATM and IP service switching platform.
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