How long does it take for the optical fiber los to flash red?

If it is a simple indoor or residential fiber failure, it takes 48 hours at the longest, and the general movement requires treatment within 48 hours. The actual treatment time is generally within 24 hours.

If it is the optical fiber problem from the communication room to the community, it should be handled well within three days, depending on the actual difficulty.

If there is something wrong with the core equipment in the computer room, if there is a replaceable board, it will be ready within a few hours, otherwise the time may be 24 hours to 72 hours.