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ＩＳＤＮ与公用分组交换网的互通（下）□张国宏赵慧玲杜森２ＩＳＤＮ与ＰＳＰＤＮ互通的实现方法２．１两种实现方法前面介绍了分组方式终端接入ＩＳＤＮ的两种方式，即方式Ａ和方式Ｂ。对于方式Ｂ，ＰＨ的实现有两种方法：一种方法是ＰＨ模块驻留在ＩＳＤＮ交换机内部，...
ISDN and public packet switching network interworking (below) □ Zhang Guohong Zhao Huilin Du Doong 2ISDN and PSPDN interworking method 2.1 two kinds of implementation methods In front of the packet mode terminal access to ISDN in two ways, the way A and way B. For mode B, there are two ways to implement PH: One way is that the PH module resides inside the ISDN switch, ...