China Unicom optical modem normally lights up three lights, namely power light, pon light, lan1 light or lan2 light; the optical modem signal light mainly consists of "POWER-power indicator light" and "SYSTEM-system status indicator light" , "LAN-Local Area Network Status Indicator", "WAN-Wide Area Network Status Indicator" and "WLAN-Wireless Status Indicator".
#The operating environment of this tutorial: Windows 10 system, Dell G3 computer.
How many lights does Unicom’s light modem normally turn on?
Normally, China Unicom Fiber Modem has three green lights that are always on, namely the power light, pon light, lan1 light or lan2 light. If you have problems with your broadband, you can call 10010 to report for repair directly.
The optical modem signal light is mainly composed of the following: POWER-power indicator light (normal state is always on), SYSTEM-system status indicator light (normal state is flashing), LAN-local area network status indicator light (normal state It is always on, and it flashes when there is data transmission), WAN-Wide Area Network status indicator (the normal state is always on), WLAN-wireless status indicator (constantly on means that the wireless function has been enabled).
Related introduction:
Optical modem, also known as single-port optical transceiver or optical modem, is a three-piece set of optical fiber transmission equipment developed for special user environments. The device uses large-scale integrated chips with simple circuit, low power consumption, high reliability, complete alarm status indication and complete network management functions.
Optical fiber communication has rapidly developed into the main form of information transmission due to its advantages such as bandwidth and large capacity. To achieve optical communication, optical modulation and demodulation must be carried out. Therefore, as a key component of the optical fiber communication system, Optical modems are receiving more and more attention. There are two types of optical modulators: direct modulators and external modulators. Optical demodulators are divided into two types: with and without built-in preamplifier. Direct modulation has the advantages of simplicity, economy and easy implementation, while the demodulator with built-in preamplifier has the characteristics of high integration and small size.
The purpose of modulation is to convert the information to be transmitted into a form that can be transmitted through the wireless channel, that is, to transform the signal to a frequency suitable for transmission. Generally speaking, modulation converts a baseband signal into a higher frequency bandpass signal. Modulation is a process that uses baseband signals to change the amplitude, phase or frequency of high-frequency carriers according to certain rules.
Optical modem, also known as single-port optical transceiver, is a product designed for special user environments. It uses a pair of optical fibers to carry out single E1 or single V.35 or single 10BaseT point-to-point optical transmission terminal equipment. . As the relay transmission equipment of the local network, this equipment is suitable for the optical fiber terminal transmission equipment of the base station and the leased line equipment. Multi-port optical transceivers are generally called "optical transceivers". Single-port optical transceivers are generally used at the user end and work similarly to the baseband MODEM commonly used for WAN dedicated line (circuit) networking. Optical Modem".
There are E1 optical modems, Ethernet optical modes, and V35 optical transceivers, which are configured with corresponding business interfaces according to customer needs. E1 optical modems transmit E1 signals through optical fibers, and Ethernet optical modes transmit through optical fibers. 2M Ethernet signal, V35 optical modem transmits V35 signal through optical fiber. Optical modem is a device similar to a baseband MODEM (digital modem). The difference from the baseband MODEM is that it is connected to an optical fiber dedicated line and is an optical signal. It is connected to the router after converting the photoelectric signal and the interface protocol. It is a type of wide area network access, which is often referred to as optical fiber access. As long as there is an optical fiber, an optical modem is required to convert the optical signal.
For more related knowledge, please visit theFAQcolumn!
The above is the detailed content of How many lights are on when China Unicom OptoMode normally lights up?. For more information, please follow other related articles on the PHP Chinese website!