METHOD OF DOUBLE-SIDED FLEET COMMUNICATION WITH DIGITAL COMMUTATION Russian patent published in 2010 - IPC H04M9/08 

FIELD: information technologies.

SUBSTANCE: invention is intended for organisation of loudspeaker fleet communication in railway stations, having one or several technological parks, in freight yards, railway stations, depots, industrial enterprises and provides for mutual call and station dispatchers speaking with performers of technological process in fleets and executives speaking between each other.

EFFECT: invention provides for communication in any zone of station due to usage of radio access facilities by executives, provides communication for annunciation and speaking of train dispatcher, passenger traffic dispatchers and civil defence and emergency service dispatcher, increased reliability and reduction of operational expenses as a result of monitoring and administration system application, increased efficiency and quality of communication as a result of combination of loudspeaker facilities and radio communication means.

2 cl, 1 dwg