ONU (Optical Network Unit) Optical network unit, ONU yakakamurwa kuita active optical network unit uye passive optical network unit. Kazhinji, michina ine optical receivers, uplink optical transmitters, uye multiple bridge amplifiers yekutarisa network inonzi optical node. PON inoshandisa single optical fiber kubatanidza kuOLT, uye OLT yakabatana neONU. ONU inopa masevhisi akadai sedata, IPTV (Interactive Internet TV), izwi (ichishandisa IAD, Integrated Access Device), uye inoita kuti zvikwanisike "kutamba katatu".
Kazhinji, zvishandiso zveONU zvinogona kupatsanurwa zvichienderana nemamiriro akasiyana-siyana ekushandisa akadai seSFU, HGU, SBU, MDU, uye MTU.
1. Kuendeswa kweSUU rudzi rweSFU
Chinhu chakanaka chekushandisa nzira iyi ndechekuti network ine zviwanikwa zvakawanda, uye yakakodzera mhuri dzakazvimiririra muFTTH. Inogona kuve nechokwadi chekuti mushandisi ane mabasa ekuwana broadband, asi haabatanidzi mabasa akaomarara ehome gateway. SFU munzvimbo iyi ine mafomu maviri akafanana: inopa maEthernet ports nemaPOTS ports; uye inopa maEthernet ports chete. Zvinofanira kucherechedzwa kuti SFU mumafomu ese ari maviri inogona kupa mabasa ecoaxial cable kuti iite kuti CATV services ibudirire, uye inogona kushandiswawo nemahome gateways kuti iite kuti pave nemabasa akawedzerwa kukosha. Izvi zvinoshandawo kumabhizinesi asingade kuchinjana data reTDM.
2. Kuendeswa kwemhando yeHGU ONU
Maitiro ekushandisa HGU type ONU terminal akafanana neeSFU type, kunze kwekuti mabasa eONU neRG akabatanidzwa muhardware. Kana tichienzanisa neSFU, inogona kuita mabasa akaomarara ekudzora nekutarisira. Muchiitiko ichi chekuisa, interface yakaita seU yakavakirwa mumudziyo chaiwo uye haipe interface. Kana michina ye xDSLRG ichidikanwa, marudzi akawanda einterfaces anogona kubatanidzwa zvakananga kune network yepamba, iyo yakafanana negateway yepamba ine EPON uplink interface. Inoshandiswa kune zviitiko zveFTTH.
3. Kuendeswa kwemhando yeSBU ONU
Mhinduro iyi yekuiswa kwedata yakakodzera zvikuru pakuvaka network yevashandisi vemabhizinesi vakazvimiririra muFTTO application mode, uye ishanduko yebhizinesi yakavakirwa paSFU neHGU deployment scenarios. Network iri pasi penzvimbo iyi yekuiswa inogona kutsigira basa reBroadband access terminal uye kupa vashandisi akasiyana-siyana data interfaces anosanganisira El interface, Ethernet interface, uye POTS interface, izvo zvinogona kusangana nezvinodiwa nemabhizinesi mukutaurirana kwedata, kutaurirana nezwi, uye TDM private line services. Zvinodiwa pakushandisa. Iyo U-shaped interface iri munzvimbo inogona kupa mabhizinesi chimiro chefuremu chine hunhu hwakasiyana, uye basa racho rine simba rakati wandei.
4. Kushandiswa kweMONU yerudzi rweMDU
Mhinduro iyi yekuiswa kwedata yakakodzera kugadzirwa kwenetwork pasi pema "multi-application modes" akadai se "multi-user FTTC", "FTTN", "FTTCab", uye "FTTZ". Kana vashandisi vepadanho rebhizinesi vasingade masevhisi eTDM, mhinduro iyi inogona kushandiswawo pakuiswa kwenetwork yeEPON. Iyi nzira yekuiswa kwedata inogona kupa vashandisi vakawanda masevhisi ekutaurirana nedata reBroadband anosanganisira masevhisi eEthernet/IP, masevhisi eVoIP, uye masevhisi eCATV nedzimwe nzira dze "multi-service", uye ine kugona kwakasimba kwekutumira data. Imwe neimwe yenzvimbo dzayo dzekutaurirana inogona kuenderana nemushandisi wenetwork, saka kana tichienzanisa, mwero wekushandiswa kwenetwork wakakwira.
5. Kushandiswa kweMTU type ONU
Iyi mhinduro yekuendesa zvinhu ishanduko yekutengeserana yakavakirwa pamhinduro yekuendesa zvinhu yeMDU. Inogona kupa vashandisi vemabhizinesi akawanda masevhisi akasiyana-siyana ekubatanidza zvinhu kusanganisira Ethernet interfaces uye POTS interfaces, uye inogona kusangana nemasevhisi akasiyana-siyana akadai sezwi, data, uye TDM lean line services yemakambani. Kana chimiro chekushandisa slot-type chikashandiswa pamwe chete, mabasa ebhizinesi akapfuma uye ane simba anogona kuzadzikiswa.
Nguva yekutumira: Chikunguru-20-2023