1. Router software failure. It is possible that there is an error in the router's internal program, causing the system to crash, which requires you to power off the router first, and then wait about 5 minutes to restart the router.
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2. The optical connector of the indoor pigtail connection is loose or in poor contact. In this case, you need to remove the interface and clean it up and plug it back in again.
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3. Some indoor optical fibers are bent too much. Excessive bending of the optical fiber will affect the full-reflection transmission of the optical signal in the optical fiber, so long as the optical fiber is straight.
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Four, the router is broken. The probability of router hardware damage is not large, but it is still possible that the hardware is faulty, which requires you to warranty to the carrier and replace a new router.
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Five, the regional broadband failure, may be the entire region of the broadband is being overhauled or out of the fault in maintenance, in this case you can call the customer service phone to understand the situation, waiting for the maintenance personnel to repair the broadband.
Solution :1. Check whether the optical fiber port on the optical transceiver is loose. If yes, reinsert it.
2. Restart the optical cat and power off the optical cat. Wait a few minutes, and then power on the optical cat.
3. The optical cat is faulty. The optical cat needs to be replaced.
4. Broadband arrears. Now broadband is basically a postpaid model, because the time is too long, the operator directly turned off the user's broadband, in this case need to pay the arrears in order to restore.
5, after the completion of the previous method, if the light cat is still flashing red, then it is recommended to call the customer service phone of the broadband operator company, declare the fault, and let the operator company send someone to overhaul the broadband.
If the light cat is red, there are two possible situations: 1. The light cat indicator is abnormal (the light cat is red\/the PON indicator is blinking\/The indicator is abnormal)
; 2, the line is broken, can not use the Internet.