The ekinex® EK-BC1-TP IP router realizes the bidirectional data connection between a PC or a laptop and a KNX bus system through a LAN network. The IP router supports the tunneling protocol and allows the adressing, parameter setting, display, protocol management and diagnosis of KNX bus devices with ETS. The IP router integrates also the line coupling function; through the device telegrams can be exchanged between KNX TP lines on a TCP / IP backbone line. The device integrates a KNX bus communication module and is realized for mounting on a standard 35 mm DIN-rail. The device is powered by the KNX bus and does not require auxiliary power supply.