Mangaki ama-ONU eyodwa i-OLT engaxhumeka kuwo?

64, ngokuvamile ngaphansi kuka-10.

1. Ngokombono, i-64 ingaxhunywa, kodwa uma kucatshangelwa ukuncishiswa kokukhanya kanye nokuzwela kwe-onu ekukhanyeni, ngokujwayelekile izinhlelo zokusebenza, inani lokuxhuma ngembobo ngayinye lingaphansi kuka-10. Inombolo enkulu yabasebenzisi abafinyelelwe yi-olt ikakhulukazi. kunqunyelwe izimo ezintathu, okungukuthi, inombolo yomkhawulokudonsa wesevisi namakheli e-MAC abasebenzisi abangawathola.

I-2.olt (itheminali yomugqa obonakalayo) itheminali yomugqa wokubona.Ekusetshenzisweni kobuchwepheshe be-pon, imishini ye-olt iyithuluzi elibalulekile lehhovisi elimaphakathi.Umsebenzi ewuqaphelayo uwukuxhuma iswishi engaphambili ngentambo yenethiwekhi, iyiguqule ibe isignali yokubona, futhi isebenzise i-optical fibre ukuze ixhumane nesihlukanisi sokubona ekugcineni komsebenzisi.Qaphela ukulawula, ukuphatha kanye nemisebenzi ehlukahlukene ye-onu yemishini yetheminali yomsebenzisi.Njengedivayisi ye-onu, idivayisi ye-olt nayo iyithuluzi elihlanganisiwe le-optoelectronic.

I-3.onu (iyunithi yenethiwekhi yokubona) inodi yokubona.i-onu ihlukaniswe yaba iyunithi yenethiwekhi ye-optical esebenzayo kanye neyunithi yenethiwekhi ye-passive optical.Ngokuvamile, okokusebenza okufakwe ukuqapha kwenethiwekhi okuhlanganisa isitholi sokubonwayo, i-uplink optical transmitter, nama-amplifiers amaningi amabhuloho kubizwa ngokuthi i-optical node.