CWDM single device 1×2(3 ports) can effectively save fiber resources and networking costs. It solves the two problems of fiber shortage and transparent transmission of multiple services. It is
mainly used in the convergence and access layer of the metropolitan area network. It can be used in a short time. Build a network and start business. Because CWDM has many advantages such as low
cost, low power consumption, small size, etc., it is a low-cost, high-performance transmission solution, and has been widely used in metropolitan area network transmission.重试 错误原因