DT Etherlink IV User Manual- 14 -3.2.1 Remote Power Supply and Wetting CurrentEtherlink_IV NTU devices do not support the wetting current termination like the LTU device. Tohave wetting current means to remote power the NTU device. The remote power supply modes canbe changed by jumpers and the LP/DP switch (LP means local powering; DP meansdistance/remote powering). Despite the safe voltage on each DSL copper wire with respect to theground (<120 Volts according to EN 60950), the use of the remote power supply has to be donestrictly according to the following rules: When working with DSL copper lines make sure that the remote power is switched off. The insulation of cable pairs, junctions (junction boxes, distribution frames, etc.) should bechecked against the remote power voltage (norms and standards of the network)3.2.1.1 Compatibility of Remote Power and Wetting Current Supply ModesDevices operating in pairs should be configured for mutual operation! The mode «» meansrecommended and possible.The use of the mode «-» is not recommended because it may cause high power consumption,degradation of communication (communication stability), and additional safety measures.The mode «inc» (incompatible) will not allow the devices to establish communication (because inthis case one or both devices will be de-energized).
