A sewer inspection and/or maintenance system is provided comprising an inspection and/or maintenance unit and a control and/or display unit, wherein the control and/or display unit is coupled operatively to the inspection and/or maintenance unit via a twisted-pair cable comprising copper. The inspection and/or maintenance unit comprises an imaging unit, which is coupled operatively to a processing unit comprising a digital signal processor (DSP) or an application-specific integrated circuit (ASIC) of the inspection and/or maintenance unit. The processing unit is coupled operatively to the twisted pair cable, and the processing unit is adapted to digitalize and to compress the image data received from the imaging unit to prepare the digitalized and compressed image data for a transmission according to the BroadR-Reach standard, and to transmit the prepared image data according to the BroadR-Reach standard via the twisted pair cable to the control and/or display unit.