摘要
介绍了具有Ping功能的基于AVR单片机的E1接口测试仪的实现,目的是为了实现对E1线路的测试,包括对物理层(E1)、链路层(PPP)以及网络层(IP)的测试。首先介绍了E1基础知识,测试仪所采用的DS21554芯片以及PPP协议,测试仪的基本结构和具体工作方式,包括硬件连接图和软件流程图。然后给出了测试仪的测试结果列表。最后简单介绍了测试仪的优点。
This paper describes the design and realization of E1 interface test instrument based on AVR. This instrument is used to test the E1 line, including the Physical Layer (El), Data Link Layer (PPP) and the Network Layer (IP). It tells of the basic knowledge the El, the chip DS21554, and the PPP protocol adopted in the instrument, and then discusses the basic construction and function of instrument, including the experimental test results. And finally it briefs the advantages of this instrument.
出处
《通信技术》
2009年第1期84-86,共3页
Communications Technology