organization of duplex and simplex communication between subscribers
multilevel prioritization of calls
the possibility of an individual call to any subscriber or group of subscribers
access to radio stations/fixed telephone devices, etc
mass/zonal/individual notification of subscribers at different sites via loudspeaker communication
online notification in manual mode
automatic voice and local notification systems with broadcast of recorded speech messages and remote access
automatic notification volume control and noise monitoring
management, maintenance and monitoring of the state of systems, with the help of an automated operator's workplace