As IP video surveillance has become the object of attention, traditional Ethernet switches can no longer meet the needs of video surveillance access networks due to factors such as optical fiber resources, maintenance, and investment. Moreover, the video surveillance service has a large demand for uplink bandwidth, generally exceeding 0.5-3Mbit/s. The number of terminal devices is large and the distribution in an area is relatively scattered, showing the characteristics of multi-point-to-point, and has high requirements for the scalability of the access network.
The EPON solution does not require additional equipment, the network structure is simple, the implementation is convenient, and its access rate is as high as 1000M, which fully meets the current and future bandwidth requirements of each monitoring point. Using the EPON platform as the basic construction, the transmission distance can reach tens of kilometers. The network uses a passive splitter to realize the sharing of optical fibers at multiple monitoring points, which greatly reduces the cost of optical cable procurement and construction. At the same time, it has the characteristics of high QOS, which meets the requirements of public safety protection and industrial applications. Using the EPON system can easily realize the remote multi-level calling and centralized storage of monitoring image information, and the network and application can be expanded to fully protect the user's investment.
The customer used 4 racks, 4 OLTs, and 100 ONUs. In the central computer room of the commercial building, each OLT is connected to an optical fiber. According to the distribution of monitoring points, the method of cascading optical splitters is used to flexibly form a network to reach each monitoring point. One OLT is connected to 20~27 ONUs. The dense area is connected to the ONU HA7204 with 4 electrical ports, and 4 IP cameras can be connected at the same time.
The unified management of the EPON system in the central computer room can easily realize remote multi-level calling and centralized storage of monitoring image information.