模拟传输与数字传输、通信的几个基本概念、传输线、现场总线（含工业以太网）概述、现场总线协议、各种现场总线。
Analog transmission and digital transmission, a few basic concepts of communication, transmission lines, fieldbus (including Industrial Ethernet) overview Fieldbus protocol, a variety of field bus. (2013-07-04, PPT, 579KB, 下载1次)
这是天津大学通信研究生的课程资料——通信网理论基础。包括上课的全部内容和期末复习资料，有需要的学习的童靴自行下载！
This is Tianjin University communications graduate course information- communication network theory. Including the entire contents of class and final review information, there is a need to learn the children' s boots to download! (2013-06-19, PPT, 5053KB, 下载5次)
以太网协议的详细介绍，具体讲解以太网协议的内容和应用，对于初学者很有帮助。
Details of the Ethernet protocol, specifically on the content and application of the Ethernet protocol, very helpful for beginners. (2013-04-05, PPT, 3217KB, 下载4次)
通信工程领域的通信网的相关课件，介绍通信网的原理和相关知识，是通信人员的必备
Communication engineering communication network courseware, introduced the principle of the communication network and knowledge is essential for communications personnel (2012-06-05, PPT, 4225KB, 下载7次)
SONET系列产品主要面向北美、日本等应用SONET体制的国家和地区城域网光网络市场
SONET series products are mainly oriented application SONET system in North America, Japan and other countries and regions in the metro optical networking market (2012-03-25, PPT, 4805KB, 下载6次)
Exact calculation of computer network reliability
Exact calculation of computer network reliability (2012-03-17, PPT, 194KB, 下载2次)
张继荣的现代交换技术PPT课件,该课件详细讲述了通信网中现有的各种技术和未来可能成为标准的多协议标记交换技术MPLS.
Zhang Jirong modern switching technology PPT courseware, the courseware described in detail in the existing communication network technologies and the future may become the standard Multi-Protocol Label Switching MPLS. (2012-01-07, PPT, 12196KB, 下载8次)
中兴内部培训材料，单板原理
1、功能：
作为ＺＸＪ１０机中央控制部分、完成呼叫处理及系统管理功能
控制交换网的接续
提供前台程序运行平台、运行ＤＯＳ、ＩＲＭＸ等软件
提供两个以太网接口
负责前／后台间数据、命令的传送
实现与各子单元ＳＰ的消息通信
控制主／备ＭＰ倒换
ZTE-house training materials, veneer Principle 1, function: As part of the central control ZXJ10 machine to complete the call processing and system management functions control the switching network to provide the follow-up program runs front platform, running DOS, IRMX software offers two Ethernet interface responsible for pre/background data, order transmission to achieve with the sub-unit communication control information SP Master/Preparation MP switching (2008-04-16, PPT, 285KB, 下载16次)