Embedded public emergency telephone - 0 views
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psstwater on 14 Aug 18Embedded public emergency telephones are intended for use in areas where direct assistance or hands-free communication is required and provide a two-way link to assistance through full-duplex phone transmission, at the press of emergency call button, the device speed dial a primary telephone number, if the number is busy or does not answer, the emergency call box will hang up and dial the next number