If the los light status of your telecom optical cat is: red flashing, it means that the optical cat has not detected the optical signal, and the optical cat cannot communicate with the broadband server of the operator, so the Internet cannot be accessed at this time.
There are many reasons why the optical cat can not detect the optical signal, which may be the problem of the telecommunications optical cat itself, or the damage of the optical fiber in the corridor, the switch\/router placed by the telecommunications company in the corridor\/community is wrong.
We have figured out the reasons, and then talk about the solution, here summarized a few points, can be referred to.
1. Check whether the optical fiber connector on the optical cat is loose. If yes, reinsert it.
2, cut off the light cat power, wait a few minutes, and then power on, observe the LOS indicator color.
3, after the completion of the first two steps, if the light cat los is still flashing red, then it is recommended that you call the customer service phone of the telecom company: 10000, transfer to the manual customer service, fault reporting, and let the telecom company send someone to overhaul the broadband.