The LAN cable from the modem to the set-top box is a standard Ethernet cat-5 cable and can be at least 50 meters (maybe 100). We had a 20 meter cable made-up locally for this. Another good option for large compounds are the power-line extenders such as TP-LINK 600Mbps Gigabit Powerline Homeplug Extender TL-PA6010KIT | Lazada Malaysia - they work anywhere if the wiring is on the same meter I believe. In my experience, they set themselves up and work really well.