【作者】 李威；

【导师】 徐塞虹；

【作者基本信息】 北京邮电大学 ， 计算机科学与技术， 2009， 硕士

【摘要】 本课题提供了一种语音网关的设计方案,可满足家庭用户和对IP电话的需求。通过方案制定,芯片选型,原理图设计,PCB设计等环节,设计并实现通话的基本功能。研发意义在于提供了单芯片实现IP电话的设计方案,本课题研发的产品具有质优、价廉、体积小等优点,可以满足家庭以及SOHO用户。本产品也弥补了北京万林克通信技术有限公司在面向家庭用户的小型语音网关产品方面的空白。本文通过对市场上常见的两种语音网关设计结构的综合比较,完成了以奥科出品的AC494作为核心芯片的IP电话设计方案,包括完整的硬件系统设计。论文大致分为三大部分六个章节,第一部分是第一二两章,为概述部分,介绍了本课题完成的主要工作,课题研究的背景,涉及的相关技术等。第二部分为本课题的详细设计部分,包括三四五章,从视频电话的设计方案选取介绍起,到硬件芯片的参数功能介绍,以及详细硬件设计,包括各个模块和接口的设计。最后一部分介绍了本课题进行中遇到的难点及解决情况。更多还原

【Abstract】 This topic gives a voice gateway project which can feed the needs of family use.The voice gateway is completed by project design, component choose, schematics and PCB design.This project gives a single-chip development solution.This product has the advantages of high quality, low cost, small size. Because of these advantages this product meets the needs of family and SOHO users. The product also makes up Beijing VANLINK Communications Technologies, Co. Ltd. small voice gateway for family users product line in the blank.After compared the two kinds of voice gateway design structures, the project used AC494 from freescale semiconductor as the core chip of the design.The porject includes the whole hardware design.This essay is divided into three sections including six chapters. The first part includes two chapters, mainly introduce the major work on the subject, the background research and related technologies.The second part includes the design selection, chip function introduction and the detailed hardware design of the voice gateway. The last section is a introduction of the problem met in this project.更多还原