ISDN代表综合服务数字网络,是一种电信技术。它允许通过基于铜线对的数字线路传输语音和数字数据。同时,ISDN在一条电话线上进行所有类型的通信。它提供了一套协议来建立、维护和完成通话。它在公共交换电话网络(PSTN)的传统电路上工作。基本上ISDN是一个电路交换的电话网络系统,但它也允许访问分组交换的电话网络。
This terms are usually used in wireless network. As we know wireless network is composed of two main parts viz. network side and mobile or fixed subscriber side. Network side houses network equipments such as base station (BTS) or Node-B or eNB. Network part also interfaces with PSTN, ISD...