OLT is the management end, ONU is the terminal; ONU's business opening is distributed through OLT, and the two are the master-slave relationship. Under one OLT, multiple onus can be hung through the splitter.
OLT realizes two functions: upstream to complete the uplink access of PON network; downstream to send and distribute the acquired data to all ONU user terminal devices through ODN network.
Different deployment of ONU access methods in FTTx network are different, for example, FTTC (fiber to the curve): ONU is placed in the central machine room of the community; FTTB (fiber to the building): ONU is placed in the junction box of the corridor; FTTH (fiber to the home): ONU is placed in the home user.
Ont is the terminal unit of FTTH, commonly known as "light cat". Ont is the optical network terminal, which is applied to the end-user, and ONU is the optical network unit. There may be other networks between it and the end-user. Ont is an integral part of ONU. OLT is the management end, ONU is the terminal; ONU's business opening is distributed through OLT, and the two are the master-slave relationship. Under one OLT, multiple onus can be hung through the splitter.
ODN is the optical distribution network, optical distribution network, which is the physical channel of optical transmission between OLT and ONU. Its main function is to complete the two-way transmission of optical signals. It is usually composed of fiber optic cable, optical connector, optical splitter and the supporting equipment to install and connect these devices. The most important component is the splitter.
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