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1 概述 综合业务数字网(ISDN),简单地说就是要将各种电信业务综合在一个通信网中进行传输和交换,以克服目前网路种类多,功能差异大,网间不互通等给网路的经营、管理、维护、建设带来的极大困难和网路不能充分发挥作用等问题,以使用户更方便地使用各种电信业务。 终端适配器(TA)的作用就是要把现已存在的各种通信网中的用户终端分别进行适配,
1 Overview Integrated Services Digital Network (ISDN), simply put is to integrate a variety of telecommunications services in a communications network for transmission and exchange, in order to overcome the current variety of networks, large differences in functionality, network interoperability, etc. to the network Road management, management, maintenance, construction and the enormous difficulties caused by the network can not give full play to the role and so on, to enable users to more easily use a variety of telecommunications services. The role of the terminal adapter (TA) is to fit the existing user terminals in various communication networks respectively,