This article will show you the type of cable and the cable distances required for installing a 2, 3 or 4 main entrance 2Voice 2 wire system and up to 32 blocks with 2 entrances per block.
IMPORTANT NOTE: If installing this type of system you should consider using the 2Voice IPerCom gateway. In this solution a 2 wire IP gateway can be installed making the entrance panels IP allowing for a more flexible installation whilst keeping a simple to install 2 wire riser. Block panels can be 2 wire or IP.
Below you can download the schematic drawing.