Briefly describe the advantages and principles of EPON and GPON settings in the FTTH solution and the solution for villages in the city

Now, carriers are all engaged in copper withdrawal. In fact, the main solution is FTTH and fttn. FTTH is an optical fiber entry, that is, directly pulling your home using a fiber trunk cable; fttn is set to the floor by ONU, and then the adsl2 + solution is implemented through ADSL access.

It is because the span, contact, and power-off of the lines have always been a headache for Urban Village users. The span of the main line is high, and the signal is not good, so it is easy to lose the line. There is also an abnormal disconnection caused by long-time contact problems. There is a power failure in the middle, and there is no way to access the Internet in the back ......

In this solution, only Pon devices are used, that is, passive optical networks. This means that the relay and optical splitting devices require electricity, that is, only the OLT and ONU need power, this avoids the problem that users cannot access the Internet due to power outages in the middle.

The Passive Optical Network (PON-Passive Optical Networks) technology is developed to support point-to-point applications.

OLT -- optical line terminal, optical line terminal
ONU -- optical network unit, optical network unit
Ont -- optical network terminal, optical network terminal
Pos -- Passive Optical splitter, Passive Optical Splitter/Coupler
ODN -- optical distribution networks, optical fiber distribution network

Because the optical splitter does not use electricity, it can ensure that the signal can reach all ONU and ont smoothly, without the impact of midway through electricity. (In fact, each Pon switch communicates directly with the OLT, so as long as the line continues, the power failure of The ONU and OLT will affect the connection of the line)

 

Therefore, for large-scale networks that require latency and transmission in cooperation with China Telecom, we recommend that you use a small Pon structure to connect to the backbone network to ensure high speed, stability, and the impact of power failure.