I-ONU(iyunithi yenethiwekhi yokubona) inodi yokubona.I-ONU ihlukaniswe yaba iyunithi yenethiwekhi yokubona esebenzayo kanye neyunithi yenethiwekhi yelabhulali ye-passive optical network.Ngokujwayelekile, okokusebenza okufakwe ukuqapha kwenethiwekhi okuhlanganisa isitholi esibonakalayo, i-uplink optical transmitter kanye nama-multiple bridge amplifiers kuthiwa yi-optical node.
Umsebenzi we-ONU
- Khetha ukuthola idatha yokusakaza ethunyelwe yi-OLT;
- Phendula emiyalweni esukela kanye neyokulawula amandla ekhishwe i-OLT;futhi wenze izinguquko ezihambisanayo;
- Gcina idatha ye-Ethernet yomsebenzisi bese uyithumela phezulu kuwindi lokuthumela elinikezwe i-OLT.
Imishini ye-ONU
Landela ngokugcwele i-IEEE 802.3/802.3ah
·Ithola ukuzwela kufika ku -25.5dBm
·Dlulisa amandla aze afike ku- -1 ukuya ku-+4dBm
·I-PON isebenzisa i-fiber optical eyodwa ukuze ixhume ku-OLT, bese i-OLTixhuma ku-ONU.I-ONU ihlinzeka ngezinsizakalo ezifana nedatha, i-IPTV (okungukuthi ithelevishini yenethiwekhi esebenzisanayo), izwi (lisebenzisa i-IAD, okungukuthi i-Integrated Access Device) nezinye izinsiza, ibona ngempela izinhlelo zokusebenza "zokudlala kathathu"
·Izinga eliphakeme kakhulu le-PON: i-symmetrical 1Gb/s idatha ekhuphukayo nephansi komfula, izwi le-VoIP nezinsizakalo zevidiyo ye-IP
·I-ONU"Plug futhi Dlala" ngokusekelwe ekutholeni okuzenzakalelayo nokucushwa
·Imisebenzi yekhwalithi ethuthukisiwe yesevisi (i-QoS) esekelwe ekushajweni kweleveli yesevisi (i-SLA).
·Amandla okuphatha akude asekelwa imisebenzi ye-OAM ecebile nenamandla
·Ukuthola ukukhanya okuzwelayo okuphezulu kanye nokusetshenziswa kwamandla okukhanya okokufaka okuphansi
·Sekela umsebenzi we-Diing Gasp