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1.Deploy the OLT in the central machine room, and each optical fiber enters different buildings after fiber separation through backbone optical cables. Level2 of optical splitting can be performed on different floors to complete optical fiber connection to each home, and each home uses ONU as PON access terminal. The terminal provides multiple Ethernet ports to provide independent service transmission for different devices.
2.OLT provides high-speed Internet services, IPTV, and voice services by accessing the operator's backbone network through the convergence switch. Moreover, OLT provides multicast function to realize fast carrier-grade IPTV service.
3.Deploy a network management server in the central computer room or the operator's network management center to implement unified configuration and management of the OLT and user ONUs. And the NMS server software provides northbound interfaces to integrate with carrier operation support systems.

Network topology


Solution Features

Provide Gigabit high-speed connection services to achieve high-speed bandwidth and high-definition services. High-speed bandwidth can support the simultaneous realization of multiple high-quality services;
ONU interface supports the access of multiple devices. ONU supports the provision of WiFi AP access to achieve network expansion and extension;
Flexible ONU configurations support the working modes of home gateway and enterprise gateway, providing maximum compatibility for different services in different scenarios;;
Compared with traditional access, passive optical network has the advantages of low cost, fast deployment, saving transceiver devices, low requirements for building pipelines, free maintenance, flexible control of optical splitting ratio, etc.

Network construction

1.Set multiple unit buildings as a distribution area, and the number of households covered by each distribution area is controlled within the capacity of the cross connecting cabinet. Multiple distribution areas can be set for large-scale residential areas, and only one distribution area can be set for small-scale residential areas.
2.The cross connecting cabinet shall be set at the center of each distribution area, and the cabinet capacity shall be greater than "the number of households + the number of cable cores connected to the cross connecting cabinet". An optical splitter is placed in the transfer box, and a first-level centralized splitter is adopted (The optical splitters in exclusive communities are configured to meet 100% of the number of households, and the optical splitters in non-exclusive communities are configured to meet 30% of the number of users).
3.Lay one incoming optical cable from the optical cross connecting cabinet in the distribution area to each unit building, and set up the optical DP on the middle floor of the building. It is recommended to install one optical DP in each unit building to minimize the number of optical cables or cable connections entering the building. (The number of optical fiber cores in exclusive communities shall be 100% of the number of households, while the number of optical fiber cores in non-exclusive communities shall be 50% of the number of households)
4.At least one core sheathed fiber optic cable shall be configured from the floor optical DP to the user end, and the integrated wiring shall be designed with 100% coverage.
5.When dividing multiple distribution areas, set up a centralized distribution point at the center of the community. From the centralized distribution point to each distribution area, lay the fiber optic cables (the number of cores is more than twice the number of long-term optical splitters). Centralized distribution points are equipped with optical cable branch joint boxes or cross connecting cabinet according to the size of the community.
6.The external optical cable should be connected from the nearest optical node (or machine room). The number of fiber cores should not only meet the service capacity of the existing residential area, but also consider whether the residential area has future expansion requirements or room division requirements. The number of incoming optical cable cores should be more than twice the total number of long-term optical splitters in the community.

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