Standard PVC two-core cable should not be used between Aiphone
video intercom stations, because the PVC insulation interferes with the
transmission of Aiphone's audio-video signals.
Use only PolyEthylene (PE) insulated two-core cable between Aiphone
video-intercom stations.
This PE cable uses PVC on the outer jacket only, as recommended by Aiphone.
Use 2 or 3 runs of two-core PolyEthylene cable when 4 or 6 conductors
are required between Aiphone stations.
The maximum distance between Aiphone video-intercom stations for
different gauge conductors in your PolyEthylene cable is shown in a table in each Aiphone
video-intercom installation manual.