ONU (Optical Network Unit) Optical network unit, ONU imagawidwa kukhala yogwira ntchito yamagetsi yamagetsi ndi gawo lopanda mawonekedwe.Nthawi zambiri, zida zokhala ndi zolandila zowonera, ma transmitters owoneka bwino a uplink, ndi ma amplifiers angapo a mlatho wowunikira maukonde amatchedwa optical node.PON imagwiritsa ntchito chingwe chimodzi cholumikizira ku OLT, kenako OLT imalumikizidwa ndi ONU.ONU imapereka ntchito monga data, IPTV (Interactive Internet TV), mawu (pogwiritsa ntchito IAD, Integrated Access Device), ndikuzindikiradi mapulogalamu a "play-triple".
Ponseponse, zida za ONU zitha kugawidwa molingana ndi zochitika zosiyanasiyana zogwiritsira ntchito monga SFU, HGU, SBU, MDU, ndi MTU.
1. SFU lembani ONU kutumiza
Ubwino wa njira yotumizirayi ndikuti zida zapaintaneti ndizochulukirapo, ndipo ndizoyenera mabanja odziyimira pawokha muzochitika za FTTH.Ikhoza kuonetsetsa kuti mapeto a wosuta ali ndi ntchito zopezera burodibandi, koma samaphatikizapo ntchito zovuta pakhomo pakhomo.SFU m'derali ili ndi mitundu iwiri yofanana: kupereka madoko onse a Ethernet ndi ma POTS;ndikupereka madoko a Ethernet okha.Tiyenera kuzindikira kuti SFU mumitundu yonseyi imatha kupereka ntchito za chingwe cha coaxial kuti zithandizire kukwaniritsidwa kwa ntchito za CATV, komanso zitha kugwiritsidwa ntchito ndi zipata zapakhomo kuti zithandizire kupereka ntchito zowonjezera.Izi zikugwiranso ntchito kwa mabizinesi omwe safunikira kusinthanitsa deta ya TDM
2. HGU mtundu wa ONU kutumiza
Njira yotumizira ya HGU mtundu wa ONU terminal ndi yofanana ndi ya SFU, kupatula kuti ntchito za ONU ndi RG zikuphatikizidwa mu hardware.Poyerekeza ndi SFU, imatha kuzindikira zovuta zowongolera ndi kasamalidwe.Muzochitika zotumizira izi, mawonekedwe opangidwa ndi U amamangidwa mu chipangizo chakuthupi ndipo samapereka mawonekedwe.Ngati zida za xDSLRG zikufunika, mitundu ingapo yolumikizira imatha kulumikizidwa mwachindunji ndi netiweki yakunyumba, yomwe ili yofanana ndi chipata chapakhomo chokhala ndi mawonekedwe a EPON uplink.Imagwiritsidwa ntchito ku zochitika za FTTH.
3. SBU lembani ONU kutumiza
Yankho lotumizirali ndiloyenera kwambiri pakumanga maukonde a ogwiritsa ntchito odziyimira pawokha mumayendedwe a FTTO, ndipo ndikusintha kwabizinesi kutengera zochitika za SFU ndi HGU zotumizira.Maukonde omwe ali pansi pa malo otumizirawa amatha kuthandizira ntchito yolumikizira burodi ndikupatsa ogwiritsa ntchito njira zosiyanasiyana zolumikizirana ndi ma data kuphatikiza mawonekedwe a El, mawonekedwe a Ethernet, ndi mawonekedwe a POTS, omwe amatha kukwaniritsa zosowa zamabizinesi mukulankhulana kwa data, kuyankhulana kwamawu, ndi chinsinsi cha TDM. ntchito za mzere.Zofuna kugwiritsa ntchito.Mawonekedwe owoneka ngati U m'chilengedwe amatha kupatsa mabizinesi mawonekedwe opangidwa ndi mawonekedwe osiyanasiyana, ndipo ntchitoyi ndi yamphamvu.
4. MDU mtundu ONU kutumizidwa
Yankho lotumizirali ndiloyenera kumanga maukonde pansi pamitundu yamapulogalamu ambiri monga FTTC, FTTN, FTTCab, ndi FTTZ.Ngati ogwiritsa ntchito pamakampani safuna ntchito za TDM, yankholi litha kugwiritsidwanso ntchito potumiza netiweki ya EPON.Dongosolo lotumizirali limatha kupatsa ogwiritsa ntchito ambiri mautumiki olumikizana ndi ma data a Broadband kuphatikiza mautumiki a Efaneti/IP, mautumiki a VoIP, ndi mautumiki a CATV ndi mitundu ina yamitundu yosiyanasiyana, ndipo ali ndi mphamvu zotumizira ma data.Iliyonse mwa madoko ake olankhulirana imatha kufanana ndi wogwiritsa ntchito maukonde, kotero poyerekeza, kuchuluka kwake kogwiritsa ntchito maukonde ndikwambiri.
5. Kutumiza kwa MTU mtundu wa ONU
Njira yotumizirayi ndikusintha kwamalonda kutengera njira yotumizira MDU.Itha kupatsa ogwiritsa ntchito mabizinesi ambiri mautumiki osiyanasiyana ophatikizirapo ma Ethernet ndi ma POTS, ndipo imatha kukumana ndi mautumiki osiyanasiyana monga mawu, deta, ndi mautumiki obwereketsa a TDM amakampani.chosowa.Ngati mawonekedwe amtundu wa slot agwiritsidwa ntchito mophatikizana, ntchito zolemera komanso zamphamvu zamabizinesi zitha kuchitika.
Nthawi yotumiza: Jul-20-2023