Mangaki ama-ONU i-OLT eyodwa engaxhuma kuwo?

64, ngokuvamile ngaphansi kuka-10.

1. Ngokwethiyori, ama-64 angaxhunywa, kodwa uma ucabangela ukuncishiswa kokukhanya kanye nokuzwela kwe-onu ekukhanyeni, ezisetshenzisweni ezivamile ezisebenzayo, inani lokuxhumeka nge-port ngayinye lingaphansi kuka-10. Inani eliphezulu labasebenzisi elifinyelelwe yi-olt linqunyelwe kakhulu yizimo ezintathu, okungukuthi, inani le-bandwidth yesevisi namakheli e-MAC abasebenzisi abangawathola.

I-2.olt (i-optical line terminal) i-optical line terminal. Ekusetshenzisweni kobuchwepheshe be-pon, imishini ye-olt iyimishini ebalulekile yehhovisi eliphakathi. Umsebenzi ewenzayo ukuxhuma iswishi yangaphambili ngekhebula lenethiwekhi, ukuyiguqula ibe isignali ye-optical, nokusebenzisa i-optical fiber ukuze ixhumane ne-optical splitter ekugcineni komsebenzisi. Qaphela imisebenzi yokulawula, yokuphatha kanye neyokuhlukanisa ye-onu yemishini ye-user terminal. Njengedivayisi ye-onu, idivayisi ye-olt nayo iyidivayisi ehlanganisiwe ye-optoelectronic.

I-3.onu (iyunithi yenethiwekhi yokukhanya) i-optical node. I-onu ihlukaniswe yaba iyunithi yenethiwekhi yokukhanya esebenzayo kanye neyunithi yenethiwekhi yokukhanya engasebenzi. Ngokuvamile, imishini ehlonyiswe ngokuqapha inethiwekhi okuhlanganisa i-optical receiver, i-uplink optical transmitter, kanye nama-bridge amplifier amaningi ibizwa ngokuthi i-optical node.