Transcription of ・接続事業者毎に、NTT東・西より8分岐単位(も …
1 8 .. SP.. 4 . SP. ONU. OLT SP. 8 . NTT . 4 . NTT . OLT SP. ONU.. NTT .. OLT(Optical Line Terminal) . ONU(Optical Network Unit) . SP NTT 1-1 NTT . 1.. 8 .. (POI) . SP.. 4 . ONU. OLT. SP. NTT . NTT NTT . SW. ONU.. NTT . SW . SW . NTT . 2.