... (FTTB), fi ber - to - the - business, fi ber - to - the - cabinet (FTTCab), fi ber - to - the - curb (FTTC), FTTH, fi ber - to - the - node, fi ber - to - the - offi ce, fi ber - to - the - premise, ... located near the subscribers. In the last three cases, there is an additional distribution network from the ONU to the NIUs, and the signal is converted from optical to electrical to feed the users ... more energy. Note that the OLT corresponds to the line termination (LT) in Figure 1.1 , the splitter to the RN in Figure 1.1 , and the ONU to the NIU in Figure 1.1 . The terms ONU and ONT are...