Building multi-site mobile radio communication systems with a centralised switchboard (CUKiU) and geographically dispersed stationary dispatch consoles (ARM-D); round-the-clock operation; selection of the best received radio signal source for retransmission; operation modes: trunked digital, conventional digital and conventional analogue (independent mode selection for each channel); radio interface of APCO Project 25 phase 1 standard according to TIA-102.BAAA; indication of radio channel status (busy/free); possibility of using the control channel as a traffic channel; control of at least 6 multichannel BSs in any operating mode; connection of at least 16 ARM-D in any operating mode; automatic registration of trunking radio subscribers in the BS coverage area; automatic communication of trunking radio subscribers in the coverage area of one BS with radio subscribers in the coverage area of any other BS of the radio network; automatic re-registration of trunking radio subscribers when moving from the coverage area of one BS to the coverage area of any other BS of the radio network; individual, group and circular calls of radio subscribers in any digital mode; reception and confirmation of receipt of emergency message according to TIA-102 standard; identification of the active radio subscriber's number on the ARM-D console; possibility of remote blocking and unblocking of any radio station; possibility of remote listening and remote checking of radio stations; possibility of organising groups consisting of trunking and conventional radio subscribers; access of trunking radio subscribers to the ATC databases; interaction of radio subscribers with PBX subscribers; possibility of remote diagnostics of the radio subscriber's number; possibility of remote diagnostics of the radio subscriber's number.
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