请英文高手帮我翻译论文摘要,高分

来源：百度知道 编辑：UC知道 时间：2024/05/08 12:11:50
本论文较全面地介绍了交换机呼叫处理模块的硬件和软件。内容包括：概述、呼叫处理软件模块功能与分析和分析交换软件的操作系统三个主要部分。交换机呼叫程序的发展非常迅速。七十年代初期,人们把PCM传输方式引入了交换机,使交换网络发生了一次大的改革,由空分变成了时分,出现了程控交换机。随着计算机技术的迅速发展,集成电路的集成度的不断提高和价格大幅度的下降,使程控交换机的成本大大降低。
在目前人类的一切通信方式中，电话通信是应用最广泛的一种。电话通信的目的是 达成人们在任意两地之间的通话，因此，必须要解决三个问题：第一是语音信号的发 送和接收；第二是语音信号的传输；第三是语音信号的交换。第一个问题由使用者的 终端设备——电话机来解决。第二个问题由各种类型的电话传输设备——从最简单的 音频传输线到多路载波设备，数字微波，卫星通信线路设备等等来解决。第三个问题 则由各种类型的电话交换设备来解决。这三个部分只要有系统地结合起来，就能构成 一个完整的电话通信系统。而程控电话交换机，是整个电话通信网路中的枢纽，有着相 当重要的作用。
关键词：PCM；程控交换机；电话通信

This thesis introduces commutation machine to call the hardware and the software of handling the mold piece more and completely.The contents includes:Say, call processing's software mold's piece's function and analysis and analysis to exchange the operate system of software all three main part.Exchange machine call sign the development of the procedure very quick.In the early part of 70's, people deliver a PCM's method to lead go into exchange machine, made commutation network to take place a great reform, from empty cent become divide, appeared a distance to control commutation machine.Along with the calculator technical quick development, the integration degree of integrated circuit raises continuously to descend with price significantly, making the distance control cost of exchanging the machine to lower consumedly.
In currently the mankind's whole correspondence methods, the telephone correspondence applies the most extensive a kind.The purpose of t