At present, the advantages of EPON technology are gradually reflected. Especially in video surveillance applications, EPON is applied to the non-monitoring networking mode. At the same time, the basic video data transmission can be solved at low cost, and the high bandwidth can be fully utilized. The advantages, simple and flexible features can also greatly reduce the overall network cost and maintenance costs.
The working principle of EPON: The whole network includes OLT, ONU. In general, the OLT is placed in the engine room and the ONU is placed close to the client. In monitoring systems, EPON networks have the following advantages.
1, high reliability, EPON is a splitter and optical fiber, long life, no active equipment, to avoid power failure, lightning, over-current and over-voltage damage and other failures, high network reliability, reduce maintenance costs.
2, The cost is low, EPON technology is suitable for single-core optical fiber transmission, half the optical fiber than ordinary optical fiber transmission. In addition, EPON does not need external power supply during transmission, it is easy to lay and basically does not require maintenance, which can save operating costs and management costs.
3, High bandwidth, 1Gmps symmetric transmission rate, can easily meet the video surveillance service bearer requirements. The bandwidth of each ONU can be dynamically adjusted between 2M-1Gmps. The average upstream bandwidth of each ONU's OLT port is about 30M, which fully satisfies IPTV requirements.
4, EPON cost-effective, EPON rate up to 1.25Gb / s equal to the high bandwidth of the uplink and downlink, the maximum rate of up to 10Gb / s, the maximum transmission distance of up to 20km, very suitable for metropolitan area network coverage, basically covering the medium-sized area The range.
5, The networking is flexible, and the highest optical split ratio is 1:64. The tree-shaped network structure is used to establish a point-to-multipoint user network topology through the combination of different optical splitters. Through reasonable network planning and design, optical fiber can be saved to the maximum extent. Resources, to solve the problem of scattered image collection.
In view of the above advantages, Feng Runda has introduced a PoE switch with PON function. This equipment has both PON function and PoE function. In the monitoring network, the advantages of the two technologies are maximized.
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