基于Si32261的FXS接口设计与应用  

Design and Application of FXS Interface Based on Si32261

作　　者：周胡净 罗明阳 杨敏 Zhou Hujing Luo Mingyang Yang Min(Chongq ing Jinmei Communication Co. ,Ltd., Chongq ing 400030, Chin)

机构地区：[1]重庆金美通信有限责任公司,重庆400030

出　　处：《微处理机》2017年第3期79-82,共4页Microprocessors

摘　　要：FXS(外部交换站)通常由变压器、运算放大器、编解码器、馈电馈铃电路和接口保护电路等部分组成,接口电路复杂,不易调试。针对上述原因,提出了一种基于Si32261芯片的FXS接口模块化设计方案,并开展了基础的应用设计,包括完成FXS接口模块的初始化,实现基本呼叫处理流程等。调试和测试结果表明该方案合理可行。FXS （Foreign Exchange Station） usually consists of transformer,amplifier,codec, line feed and protection circuits. In view of the disadvantages such as complicated circuits and difficult debugging,a modular design of FXS interface based on Si32261 is proposed and a basic application design is carried out,including FXS initialization and basic call processing procedure. Debugging and test results indicate that the design is reasonable and practicable.

关 键 词：外部交换站 用户线接口电路 VOIP网关 BORSCHT功能 模块化设计 呼叫处理流程 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构] TB516[自动化与计算机技术—计算机科学与技术]