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2. The optical signal interface of the router is faulty. The connection port may be loose or poor contact. In this case, you need to remove the optical signal crystal connector and reinsert it.
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4, the upper connection splitter failure, generally in this case, the surrounding neighbors can not access the Internet. This can only be reported to the operator and other staff on-site repair
Router flashing red light indicates that there is a problem with the network connection, at this time the home must have been off the network, you need to check whether the router plug is not plugged in, if there is no problem is the network cable problem, need to report repair.