To meet the demands of high-quality broadband network development, most operators currently favor deploying Fiber to the Edge (FTTB/FTTH) networks. However, in actual FTTB/FTTH deployments, the power supply problem for ONU devices in corridors and outdoor scenarios is particularly prominent. In special scenarios such as renovations of older residential areas, weak power supply and backup conditions, and extremely unstable power supply in corridors, not only lead to high ONU device failure rates but also increase subsequent maintenance costs, severely impacting user experience and posing significant challenges to the implementation of PON solutions.

To address these power supply pain points, V-SOL has developed and launched an outdoor reverse PoE ONU product. This product can efficiently solve the power supply problem for outdoor and corridor ONUs by deploying a PSE (Power Source Equipment) in the end user’s home.

Note:

PoE (Power over Ethernet) is a technology that combines data transmission and power supply functions. It can transmit data signals to IP terminals such as VoIP phones, wireless APs, and IP cameras, and also provide them with DC power. It is also known as POL (Power over Local Area Network) or active Ethernet. 1. Why Choose an Outdoor Reverse PoE ONU?

The outdoor reverse PoE ONU (PD mode) primarily addresses the following core issues:

① Completely solves the pain point of difficult power supply for ONUs in corridors and outdoor scenarios;

② Allows users to bear the electricity costs of terminal equipment, significantly reducing the operator’s power supply deployment and maintenance costs.

Applications of Outdoor Reverse PoE ONUs

In a typical PON network architecture, the OLT connects uplink to the core network or aggregation switch and downlink to the optical splitter. As shown in the diagram, the optical splitter branches into three branches, corresponding to three different ONTs/ONUs, deployed in different application scenarios. The OLT, passive optical splitter, and ONU together form a passive optical network (PON) to realize the transmission and distribution of fiber optic signals.

If the optical splitter is directly connected to a general-purpose ONT deployed in the user’s home, under the condition that power supply and fiber optic link conditions are met, it can normally provide users with triple playback services of CATV, VoIP voice, and Internet access. This mode is a typical FTTH (Fiber to the Home) application. 2. If there is no AC power supply in the house or building corridor, a V-SOL outdoor reverse PoE ONU (model: V2810E-4PD/V2810G-4PD) can be deployed in the corridor on the uplink side of the optical splitter to solve the power supply problem through reverse PoE technology.
Similarly, if there is no power supply at the outdoor fiber optic access point (such as on utility poles), an outdoor reverse PoE ONU (model: V2808PD-ZE/V2808PD-ZG) can be deployed, suitable for harsh outdoor deployment environments.
The power supply for both types of ONUs is provided by the PSE (Power Supply Equipment) deployed in the user’s home or building, eliminating the need for additional outdoor power lines.

Features of the V-SOL Outdoor Reverse PoE ONU:

Compatible with various OLT devices based on Broadcom, PMC, and Cortina chipsets, offering wide adaptability;
Press and hold the RST button for 3 seconds or more to automatically restart the device and restore factory settings, facilitating troubleshooting;
Professionally waterproof design, allowing direct installation on outdoor walls, utility poles, and other outdoor locations, adapting to complex outdoor environments;
Convenient installation and maintenance, with a wide applicable temperature range, suitable for different regional climates;
Low-power design, noiseless, highly stable, and environmentally friendly, reducing long-term operating costs;
Supports plug-and-play functionality, enabling automatic detection, configuration, and firmware upgrades, reducing manual maintenance workload.

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