System for communication over a multiphase medium voltage line by means of broadband over power lines, a medium voltage cable (11, 11', 11") being provided for each phase of the medium voltage line, which system comprises: a plurality of BPL modems (12, 12', 12", 13, 13', 13"), the BPL modems (12, 12', 12", 13, 13', 13") each being connected to one of the medium voltage cables (11, 11', 11") and designed to transmit and receive data packets via the relevant connected medium voltage cable (11, 11', 11") to and/or from a remote BPL modem, characterised by a control unit (14, 15) which is communicatively connected to at least two of the BPL modems (12, 12', 12", 13, 13', 13") at one side of the medium voltage line, the control unit (14, 15) having an uplink interface (16, 17), and the control unit (14, 15) being designed to forward, on the basis of a ruleset, a data packet received via the uplink interface (16, 17) to at least one of the connected BPL modems (12, 12', 12", 13, 13', 13") in order to transmit the data packet via the medium voltage line, the control unit (14, 15) being designed, when forwarding a data packet received by the control unit (14, 15) via the uplink interface (16, 17), so as to carry out load balancing by means of all of the BPL modems (12, 12', 12", 13, 13', 13") connected to the control unit (14, 15), and it being possible to establish a point-to-point connection via the medium voltage line, the BPL modems (12, 12', 12", 13, 13', 13") establishing in pairs a communication channel via one of the medium voltage cables (11, 11', 11") at each end of the point-to-point connection and a control unit (14, 15) being arranged at each end of the point-to-point connection. a plurality of BPL modems (12, 12', 12", 13, 13', 13"), the BPL modems (12, 12', 12", 13, 13', 13") each being connected to one of the medium voltage cables (11, 11', 11") and designed to transmit and receive data packets via the relevant connected medium voltage cable (11, 11', 11") to and/or from a remote BPL modem, characterised by a control unit (14, 15) which is communicatively connected to at least two of the BPL modems (12, 12', 12", 13, 13', 13") at one side of the medium voltage line, the control unit (14, 15) having an uplink interface (16, 17), and the control unit (14, 15) being designed to forward, on the basis of a ruleset, a data packet received via the uplink interface (16, 17) to at least one of the connected BPL modems (12, 12', 12", 13, 13', 13") in order to transmit the data packet via the medium voltage line, the control unit (14, 15) being designed, when forwarding a data packet received by the control unit (14, 15) via the uplink interface (16, 17), so as to carry out load balancing by means of all of the BPL modems (12, 12', 12", 13, 13', 13") connected to the control unit (14, 15), and it being possible to establish a point-to-point connection via the medium voltage line, the BPL modems (12, 12', 12", 13, 13', 13") establishing in pairs a communication channel via one of the medium voltage cables (11, 11', 11") at each end of the point-to-point connection and a control unit (14, 15) being arranged at each end of the point-to-point connection.