What s going on with the fiber optic light on the fiber optic cat is red

Fiber optic pigtail and fiber coupler.

If the connection is disconnected, that is, the optical modem.

There is a problem with the fiber connection, although the staff still checks the connection at the time of installation, but after a long time of use or human factors will cause the coupler to be disconnected from the pigtail. Solution: Try to reconnect the pigtail, do not use too much force, it is easy to cause the fiber to bend and break.

Excessive bending of the optical fiber in the room: Excessive bending of the optical fiber will affect the total reflection of the optical signal in the optical fiber.

Transmission, as long as the fiber is straight. It is also possible that the optical fiber of the outdoor part is broken or the optical port of the equipment in the operator's equipment room is faulty, and you need to find the operator to deal with it.

Precautions for using routers and optical modems.

All the lights of the cat are not lit when surfing the Internet, please make sure that the power plug is plugged in and the light modem switch has been turned on.

The blue light of network G or fiber G of the optical modem is always on, indicating that the telecom network is normal. Still can't get online, please check your router and computer.

Please use the original power adapter.

Do not replace the modem when connected to the modem, otherwise it may cause you to lose access to the Internet or damage your device.

For the above content, please refer to Encyclopedia-Routing Optical Modem.

The optical signal light of the optical modem indicates the working status of the optical signal on the optical modem. Its work is related to the three parts of the machine room--- optical cable--- optical modem.

The flashing of light signal lights mainly has the following aspects:

1. The light port of the computer room emits low or no light, causing the user's optical modem to work abnormally, and the optical signal light cannot receive the optical signal sent from the optical cable or the power of the optical signal is too low, which will cause the optical modem to shake hands with the computer room abnormally, and the optical signal will flash or alarm with a red light.

2. Optical cable failure (including broken optical splitter) will also cause the optical modem to not receive light or the light collection is too low, and the optical signal light will also flash or alarm with red light.

3. The failure of the optical modem itself and the partial damage of the receiver will also cause this phenomenon.

No matter which of the above three situations occurs, users basically can't solve it, and they can only report the fault.

The optical signal on the modem displays a red light, indicating that there is a problem with the optical fiber. Causing the network to slow down or not be able to access the internet at all.

Check whether the optical fiber cable (usually a yellow soft wire) behind the fiber modem is folded or squeezed, and straighten the cable slightly to see if the red light situation returns to normal.

The LOS light signal indicator flashes red: The device does not receive the light signal.

Suggestions: 1. Restart the optical modem;

2. Check whether the bending angle of the line is too large and the phenomenon of extrusion;

3. Check whether the optical fiber interface is loose and plug in the joint;

If the above methods still do not solve the problem, you can call the local 10086 to report the broadband fault.

If the optical signal light of the optical modem turns red, it means that the optical modem has received no optical alarm, and there is a problem with the optical fiber line.

Check whether the fiber plug behind the modem is loose or whether the fiber is bent too much.

If there is no problem, take it for repair.

The optical signal of the optical modem keeps flashing red, and the optical path connecting to the optical modem is broken.

Check that the plugs of the pigtail and the optical cat are plugged securely.

If there is no problem, check whether the joints of the indoor smooth leather cable and pigtail are disconnected and virtually connected.

If there is no problem in the room, you can contact the outside line maintenance personnel of Telecom. Generally, if the optical path is broken or falsely connected, it is difficult for the user to solve it.

Because the splicing of optical fibers requires specialized tools or materials (such as fusion splicers or cold splicers).

In addition, if it is a fault in other parts of the optical path, such as the splitter connector and the optical box, the user cannot deal with it by himself.

Optical fiber is an abbreviation for optical fiber, which is a fiber made of glass or plastic that acts as a light conduction tool. The principle of transmission is 'total reflection of light'. Former President of the Chinese University of Hong Kong, Charles Kao and George A

Hockham was the first to propose the idea that optical fiber could be used for communication transmission, for which Charles Kao was awarded the Nobel Prize in Physics in 2009.

The light modem is red, and when it is on, it means that the optical fiber is broken, and it must not be able to go to the network. Normally, the optical signal and the network g will only light up one. There is a cat light signal that is green (the indicator is the same as the network gpon epon gpon).

If the red light is on, the red light can still be accessed, but the simple light modem indicator is broken, and it does not affect the Internet. If you can access the Internet, don't care, it's the cat's indicator light is broken, if you can't access the Internet, you can replace the light cat.

Optical modem, also known as single-port optical transceiver, is a product designed for special user environments, which uses a pair of optical fibers to carry out single E1 or single or single 10BaseT point-to-point optical transmission terminal equipment.

Suggestions: 1. Restart the optical modem;

2. Check whether the bending angle of the line is too large and the phenomenon of extrusion;

3. Check whether the optical fiber interface is loose and plug in the joint; If the above methods still do not solve the problem, you can call the local 10086 to report the broadband fault.

The fiber optic catlight signal light is red light.

It is the optical modem that sends out a no light alarm.

It means that the cat did not receive the fiber signal or there is a problem with the fiber line.

You can check if the plug is loose.

Or whether the fiber optic cable is bent too much and damaged.

If there is no problem indoors, you can contact the external maintenance personnel of the network ** business for external problems.

Users can't solve it on their own.

If the external network is disconnected, you can plug and unplug the optical fiber interface on the modem, and if not, contact the operator directly.

If the optical signal light turns red or flashes, it means that the optical fiber signal cannot be received, which is usually caused by the following conditions:

If there is a problem with the optical interface of the optical modem, you need to replace the optical modem.

The indoor pigtail connection optical modem connector is loose, and the connector can be restored by plugging it in;

The bend of the optical fiber in the indoor part is too large. Excessive bending of the optical fiber will affect the total reflection transmission of the optical signal in the optical fiber, as long as the optical fiber is straightened;

If the outdoor optical fiber is broken or the optical port of the equipment in the equipment room is faulty, you need to contact the staff to report the fault.

There are several lights on the cat.,Which one are you talking about?,Power is the power indicator.,Turn on the switch and it's always on, and the cat will be broken or the switch won't be turned on if it's not powered on.。 lan Your computer is turned on or connected to the route, he will flash, if it doesn't flash, it is not turned on the computer or the cable is not connected. Or your computer's network card is broken.

adsl is your connection to the external network,Flash is not connected to the external network,It may be**The cable is not plugged in or the network communication problem or your cat is over。 Internet: When your ADSL is connected, it will flash. If there is less data transmission, he will flash slowly, and when there is more data transmission, he will flash wildly.

Unplug all the network cables on it, turn it off and turn it on again after a while, wait for the red light to stop flashing, and then plug the network cable back into it without help. If the red light keeps flashing, call the telecom customer service, the fiber is faulty.

1) The fiber is broken.

2) The fiber pigtail is not inserted into the modem.

3) Optical modem failure.

4) Failure of the uplink splitter.

5) The light cat is broken.

Related knowledge extension - the meaning of light cat flashing light.

1) PON-fiber signal is normal, successfully registered on the OLT;

2) The LOS-optical signal is lost, and when the red light is on, the optical path is broken or attenuated too much beyond the working range;

3) LAN-device interface indication.

4) When normal, PON is always on, LOS is off, LAN is on, and it flashes quickly when there is data traffic.

The light signal lights up red, indicating that the optical modem has received no light alarm, and there are the following situations:

1. There is a problem with the optical interface of the optical modem, and the optical modem needs to be replaced. (This is rare).

2. The indoor pigtail connection optical cat connector is loose. Plug the connector in and it can be restored.

3. The bending of the indoor part of the optical fiber is too large. Excessive bending of the optical fiber will affect the total reflection transmission of the optical signal in the optical fiber, as long as the optical fiber is straightened;

4. If the outdoor optical fiber is broken or the optical port of the operator's equipment room is faulty, you need to find the operator to deal with it.

No signal, try another place,

Dude, today I have the same problem as you, I call 10000 and he said to fix it tomorrow! Then I replugged all the wires myself, and it still didn't work! I just turned off the power and had nothing to do at night, so I wanted to try the result on the line

A red fiber optic light on the cat usually indicates a problem with the connection. The fiber optic light is used to indicate the status indicator of the cat's connection to the network, if the color of the light changes to red, then the connection may be interrupted or cannot be used normally due to some reasons.

Need to know more about why the connection is interrupted or not working. Usually, the reason why a cat's fiber optic light turns red can be due to issues such as an optical path break, a line failure, or a malfunctioning device.

First of all, the optical path interruption can be caused by the fiber optic cable being cut or the optical module being damaged. If the optical path is interrupted, the fiber is unable to transmit data, causing the connection to be interrupted and the light to turn red.

Second, line faults may be caused by damaged or loose connections or connectors between optical modules and other devices. If the connector is not plugged in properly or the metal contact points on the connector are contaminated, the signal cannot be transmitted normally, and the light may also turn red.

In short, the red fiber optic light on the cat is usually a problem with the connection. Understanding the cause, we can take some measures to solve the problem, such as checking whether the fiber optic cable is connected normally, whether it is damaged, or replacing the line and equipment, etc., in most cases, as long as the problem is found in time and effectively handled, we can successfully restore the network connection and ensure that the network can be used normally. <>