We have 4 networks between the houses, but only two of them are currently in use, the others are "for future use".

• A full star of multi mode fiber cables from 3Ms Volition-series.
• They are used for 10 and 100 Mbps to the houses in the block (it was about $300 cheaper for those who took 10 Mbps instead of 100 Mbps).
• A full star of single mode fiber cables from 3Ms Volition-series.
• They are for future use. Perhaps TV-via-fiber? The lifespan is about 30 years and we believe they will be needed within 5-10 years.
• A high-performance CATV-network (Cable-TV) with state-of-the-art amplifiers and cables.
• This network is currently in use, but it is not perfectly balanced yet, so a couple of houses receive poor-quality signals. Perhaps the gain is too high on a few amplifiers?
• A full star of ordinary twisted-pair copper cables. 4 pairs per house, but only 2 pairs per house are connected.
• They are not in use. They are intended for house-automation-devices, such as burglar-alarms, water-alarm, remote-steering of the heat etc. It was practically free to install these cables.
• All cables run in PVC-tubes about 50 cm below ground. A few main-tubes are absolutely full with cables, so unfortunately it isn't possible to install more cables in them, but hopefully it won't be necessary.