In the past two years, single-port PON chips from Realtek, ZTE, and Poncan have started to enter the commercial market, which has restructured the cost system of Mini OLT. The cost-performance advantages of these products are gradually becoming evident. Dramatic cost reduction has greatly lowered the entry cost of adopting this product for networks in hotels, small enterprises and small parks with around a hundred users.
However, at the same time, a cognitive bias for these products has emerged in the market. Many users have begun to form fixed wrong impressions, thinking that Mini OLT should be very cheap, but neglecting hardware reliability, complete software functionalities, and long-term network stability. Currently, the majority of cheap no-brand products on the market generally have issues such as simplified hardware and software, which may lead to faults like abnormal ONU registration or system crash.In this case, it will instead increase the subsequent operation and maintenance costs.
This article will introduce the design points of these products from the perspective of hardware disassembly, objectively outlining the key points in the design of such products, and providing small and medium-sized users with practical criteria to judge product quality.
1. Mini OLT’s Power Supply Design
Due to the low power consumption of Mini OLT GPON devices including Mini OLT 1 Port and Mini GPON OLT 32 ONU, most devices have total power consumption below 24W, so the built-in switching power supplies typically output around 12V/2A. This type of power supply features low design difficulty and high versatility, leading to fierce price competition. A large number of low-cost power supplies have emerged in the market. To cut costs, some cheap manufacturers adopt cheap built-in power supplies, lacking comprehensive overcurrent, overvoltage, surge, and protection circuits, and also downgrade the specifications of core components such as capacitors and transformers. Since these Mini GPON OLT products are required to operate continuously for 7×24 hours, such cheap built-in power supplies may become highly unreliable.
However, when talking about mini gpon olt price and related resources including mini gpon olt files and mini gpon olt software download, Rayin Technology's product initially chose a full-capacity industrial-grade built-in power supply, which features multiple protection circuits and ensures sufficient component margins.The specific design can be shown as below:
2. Heat Dissipation Design
Although the overall power consumption of multi-port OLT devices such as the C300 Mini OLT is higher, their heat dissipation structure is systematically planned during the R&D phase, and the cost of heat dissipation materials in the entire machine is very low. Unlike entry-level 1 PON GPON Mini OLT models, most high-spec devices will be equipped with fans. Moreover, professional Mini GPON OLT products will undergo rigorous reliability testing according to telecom-grade standards, including high and low temperatures, aging, and long-term full-load conditions, running continuously for 7×24 hours to ensure product stability.
In general, OLT devices with more than 4 ports such as Mini OLT GPON 32 ONU, Mini OLT VSOL and Nokia Mini OLT consume higher overall power consumption. During the R&D phase, engineers will systematically design the heat dissipation structure. Furthermore, to guarantee product stability, on one side, fans are generally equipped on the devices since thermal components just account for a very small portion of the total material cost; on the other side, the products will undergo rigorous reliability tests in compliance with telecom-grade standards, including high-low temperature cycling, aging and long-term full-load operation, as well as continuous 7×24-hour full-load running.
In contrast, the Mini OLT, including popular models like mini olt gpon 32 client, was designed for cost saving initially and not designed to comply with telecom-grade standards. Many buyers who focus on mini olt price in bangladesh also notice that its heat dissipation structure has been greatly simplified. Some manufacturers adopt fanless passive cooling and come without reliable testing processes, while relevant mini gpon olt software also lacks complete stability optimization.
Unlike these manufacturers,Rayin Technology completed thermal design simulations of the entire machine by thermal simulation software during the product development phase. We found OLT chip and the management chip only consume low power. But for the PON module, there is a different performance: if no special heat dissipation measures are taken, the internal temperature of the PON module may exceed 85°C when the ambient temperature reaches 40°C, leading to packet loss and frequent ONU disconnections during laboratory testing. Finally Rayin Technology has addressed the issue through repeated validation testing using the following two methods:
a. A small cooling fan is added, and adopt SFP transceivers with heat sinks. For products ranging from mini gpon olt 1 port to mini gpon olt access of 32 onu, combining the convection from the fan with the passive cooling from the heat sinks on the SFP reduces the core temperature of the optical module and balances cost and heat dissipation performance. All related documentation is available via mini gpon olt files download. Rayin Technology adopts a design with an on-board dedicated temperature detection chip. It collects real-time temperature data of the entire device and also is equipped with adjustable-speed fans. The equipment can automatically adjust the fan speed based on the real-time data provided by the temperature chip: it operates quietly at low speeds under low temperature and light load, and increases speed to enhance cooling under full load and high temperature, effectively reducing wear and significantly extending the overall lifespan of the fan, while ensuring quiet operation and long-term reliability.
b. If a fanless design is absolutely necessary, it have obvious defects that some manufacturers’ designs relying solely on silicone thermal pads at the bottom of the SFP. Experimental data shows that when ambient temperatures exceed 40°C, the PON module will experiences packet loss due to ineffective heat dissipation. Rayin Technology utilizes a dual-layer thermal structure to do the optimization: replacing thermal silicone with an aluminum thermal block at the bottom of the SFP to quickly transfer heat to the equipment’s house; simultaneously, large heat sinks are added to the surface of the PON module to conduct heat to the top house. This dual cooling mechanism can greatly reduces localized high temperatures. Please refer to the figure below for the detailed design of Rayin Technology.
3. Conclusion
There are many similar Mini OLTs on the market, including the Single Port Mini OLT, but their internal designs can differ greatly.The analysis of the above two details in this article clearly demonstrates Rayin Technology's solid design capabilities. Firstly, By extensive validation and testing in product heat dissipation to ensure long-term reliable operation of the equipment. Secondly, the built-in power supply adopted the same design standard with the hardware, designed with industrial-grade standards and verified against telecommunication-grade high and low temperature aging standards. Therefore, although some mini OLTs may appear similar, cheap products will be likely to disconnect under full-load operation. In contrast, Rayin Technology’s design balances cost and reliability, suitable for long-term stable operation in environments such as hotels and industrial parks with mixed networks.
If you are unsure about the reliability of your existing purchased product, Rayin Technology engineers can provide you with free technical support services. You also disassemble the device by yourself to verify against the above two points.
For complete product solutions and technical white papers, please visit Rayin Technology’s official website: www.szrayin.com.
