Ｂ－ＩＳＤＮ：技术发展跃变从现有网络转变到Ｂ－ＩＳＤＮ代表了通信领域的重大技术发展跃变。为保证从现有网络到宽带综合网的成功过渡，就必须认真研究这些跃变。Ｂ．ＩＳＤＮ的目标是将现今各种不同的网络，如电话网（电路交换）、数据网（分组交换）和分配式网络（如... B-ISDN: Technological Evolution The shift from existing networks to B-ISDN represents a major technological shift in communications. To ensure a successful transition from existing networks to broadband integrated networks, these jumps must be carefully studied. B. The goal of ISDN is to combine today’s diverse networks, such as the telephone network (circuit switched), data network (packet switched) and distributed networks (such as ...