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1. 发明申请

WO1993010621A1 METHOD AND APPARATUS FOR ADDING VOICE COMMUNICATIONS TO TELEPHONE ALARM SYSTEM 审中-公开
标题翻译：用于向电话报警系统添加语音通信的方法和装置
公开(公告)号：WO1993010621A1
公开(公告)日：1993-05-27
申请号：PCT/US1991008784
申请日：1991-11-22
申请人： DIGITAL DESIGNS, INC. , BOWMAN, Richard, J.
发明人： DIGITAL DESIGNS, INC.
IPC分类号： H04M11/04
CPC分类号： H04M11/04
摘要： The alarm panel module (30) distinguishes activation of the telephone system by the alarm panel (13) from routine activation by the subscriber's telephones, detects the alarm panel's termination of the telephone link and transfers the link to a voice communication control (38) which sends an identifier code to the monitoring station (20) indicating two-way voice communication capability, and uses DTMF tones from the emergency operator's set to switch between listen and speak functions of the speaker/microphones (32). The voice line receiver (34) detects the monitoring station (20) terminates the link to the subscriber and captures the link for a brief period to detect a signal indicating that the subscriber is equipped for two-way voice communication, and if so, transfers the link to the emergency operator's telephone communication set.
摘要翻译：报警面板模块（30）通过报警面板（13）将电话系统的激活与用户电话的常规激活区分开来，检测报警面板的电话链路终止，并将链路传送到语音通信控制（38）向监视台（20）发送指示双向语音通信能力的识别码，并使用来自紧急操作员的DTMF音来切换扬声器/麦克风（32）的听和说话功能。语音线路接收器（34）检测到监视站（20）终止与用户的链接，并且短暂地捕获链路以检测指示用户被配置用于双向语音通信的信号，如果是，则传送连接到紧急操作员的电话通信集。

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