DEVICE FOR TRANSMITTING VOICE INFORMATION OVER DOOR COMMUNICATION NETWORKS Russian patent published in 2016 - IPC H04M11/02 

FIELD: warning systems.

SUBSTANCE: invention relates to systems for alerting public on hazard in case of emergency situations (ES) using door communication network. Said technical result is achieved by fact that in device of voice information over door communication networks interface module of warning systems with door phone is located in door phone circuit between switch and phone call unit panel of intercom system and comprises starter unit, which control input is connected with warning signal transmission device and with unit for disconnection of signals from door phone interface module of warning systems with intercom, unit of disconnection of signals from interface module warning systems intercom system with door phone is connected to switch and power supply units of apartment door phone devices and audio signals modulator. Warning systems with door phone interface module power supply unit is connected with short circuit protection unit, audio signals modulator power supply unit is connected with amplifier and audio signals pulse-width modulator, which through key is connected to lines of apartment talking devices.

EFFECT: higher reliability, broader functional capabilities of intercom system due to process of alerting public in case of emergency situations at door intercom networks in any door phone devices while simultaneously simplifying structure of system of warning and increasing volumes of coverage for preventing occurrence of dangerous situations per unit of time.

1 cl, 3 dwg