基于VOIP的数字对讲系统设计  

Design of VOIP-based Digital Intercom System

作　　者：王小利[1] 

机构地区：[1]山东大学,山东威海264209

出　　处：《实验室研究与探索》2013年第8期79-81,113,共4页Research and Exploration In Laboratory

摘　　要：为实现四部对讲机在同一电话线路上的时分复用功能,实现话路资源最大化利用。系统分为VOIP模块与主控模块两大模块组成,VOIP(网络电话)模块采用语音专用芯片CS6220进行语音信号的处理,主控模块以STC89LE52为核心处理器,将前置数据采集模块的数据进行分析,并通过与VOIP模块的通信,实现四部对讲机在同一路电话线路上的抬机检测、话路切换、梯口机呼叫优先处理以及频繁抬挂机的黑名单处理等相关功能,实现话路资源的充分利用。测试证明,该方案可行。In order to maximize the use of channel resources for the realization of a time-division multiplexing function, four walkie-talkies aneset on one telephone line. System is divided into two modules： the VOIP. module and main control module. The VOIP module uses a voice dedicated chip CS6220 to process speech signal. STC89LE52 is responsible for front-end data acquisition module data analysis, and communication with VOIP module. Four walkietalkies, in the same telephone line can realize lifting detection, speech path switching, the stairs machine call priority processing and frequent lift-hook blacklist processing. It can be full use of advantage of the telephone channel resources. The test proved the feasible.

关 键 词：一对多对讲系统 VOIP STC89LE52 多机通信 

分 类 号：TN916[电子电信—通信与信息系统]