话务员控制台语音通信功能的研究与实现-软件工程专业论文.docxVIP

话务员控制台 话务员控制台 语音通信功能的研究冀实现 摘要 本课题来源于SAC话务员控制台项目，其基本功能悬语音通信，课题的设 计鲤标是实现一套语音通僚系统，用于实瑷SAC项羁中的语音通偿功能。 这套通信系统包括位予局域刚上的计辫机语音终端及语音网关。语音阚关通 过DivaPRl语音卡提供PRI接口，经由ISDN线路连接到EWSD交换机。 这套系统的软件总体上分为语音网关程序和语音终端鼷序两部分。语音网关 程序的任务是：实现ISDN侧和局域网侧呼Hq连接的建立与释放；对语音数据的 接狡、筵璎程发送。语音终溃应焉摆痔装经务是：实臻与落瓷瓣关簿髯连接靛建 立和拆除；实现语音数据的接收、处理和发送；并通过耳机和麦克风对语音进行 实时采集垮矮放。 电话终端与语音终端的语音通信是通过消息交互实现的。在嗣关程序中的消 息处理包括对CAPI消息的处理以及对Socket消息的处理。通过对语音卡支持的 CAPI窥范臻臼迸芎子编程，实现溺关两镶信令帮数攥静交换；Socket潜惠怒鑫定 义的一套简单通信协议；谮音数据的实时处理采用Windows低层齑频函数；语 音数摆的网络传竣采用Windows socket规燕编程实现。 本文介绍了CAP／接r=I规范和语音实时处理等理论以殿课题的需求分析、设 计方案、实现与测试等内容。 [关键字】CAPI，语音通信，低层音频涵数擞据通信 RESEARCH RESEARCH AND IⅣⅢLEⅣ【ENT OF VOICE COMMUNICATION FUNCTIoN OF SIMPLE ATT丑NDANT CONSOLE ABSTRACT This subject comes from SAC(simple attendant console)project whose basic function jS voice communication．The design object of the subject iS to implement a voice communication system including two computers respectively as a voice terminat station and voice gateway at the LAN．Vjice gateway offering PRI interface through Dira PILl voice card connects to EWSD switch via ISDN】ine．This system can perforrn the voice communication fimction of SAC．namely ttle VOiCe communication between telephone and voice terminal． The software of this system iS divided into two parts．which include one application for voice terrainal and蛹e other application for voice gatewaF功e task of the application ofvoice gateway includes Setting—up and release ofcalling from ISDN side and LAN side and Receiving．handling and sending ofthe voice data．The task of the application of voice terminat includes not only Setting—up and release of catling between the voice gateway and voice temfinal but alSO Receiving，handling and sending of the voice data and at the same time voice data requisition and broadcast in real time through a earphone and a microphone． The voice communication between the voice terrainat and telephone implemented through transmitting message．The message handling of the application of voice gateway involves t