介绍的专用语音信箱由２ 条中继线、７ 台分机、１ 个语音处理单元以及呼叫处理程序和语音信箱管理程序组成。内外线电话能够互相呼叫或拨号访问信箱，并拥有多种程控业务新功能。语音信箱具有查询、留言和播放公众信息等功能，在被叫忙音或无应答时自动进入信箱。呼叫处理程序使用状态迁移法解决呼叫信号采集、处理的多重性问题；使用时间调度技术解决多用户的实时处理问题；使用ＶｉｓｕａｌＢａｓｉｃ的ＭＳＣＯＭＭ 控件实现了串行口交互通信；将多媒体ＭＩＣ控件用于语音信息的记录、储存和重放过程。该语音信箱有明显的实用价值 The introduced dedicated voicemail consists of two trunks, seven extensions, a voice processing unit, and call processing and voicemail management programs. Internal and external calls can call each other or dial-up access mailbox, and has a variety of program-controlled business new features. Voice mail has the function of querying, leaving messages and playing public information, and automatically enters the mailbox when the called busy tone or no answer. The call processing program uses the state transition method to solve the problem of multiple call signal acquisition and processing; the use of time scheduling technology to solve real-time multi-user processing issues; using VisualBasic MSCOMM control serial port to achieve interactive communication; multimedia MIC control for voice Information recording, storage and playback process. The voice mail has obvious practical value