The Optical Network Unit (ONU) is an Optical Terminal connected by optical fibers. It should be used in conjunction with the Optical Line Terminal (OLT), which is the central equipment room of an ISP.

The optical network unit (OLT) at the local end and the optical network unit (ONU) at the user end are the key parts of EPON, and the switching chip and its driver are the core of the whole system. Their design quality and operation performance are good or bad.

Optical Network Unit (ONU) Optical node. The ONU (Optical network Unit) is the user side device of the GEPON (Gigabit Passive optical Network) system. It is used to terminate the service transmitted from the OLT (optical line terminal) through the PON (passive optical fiber network). In conjunction with OLT, the ONU can provide a variety of broadband services to connected users. For example, Internet surfing, VoIP, HDTV, VideoConference and other services. As a user-side device for FTTx applications, ONU is a necessary terminal device with high bandwidth and high cost performance for the transition from the "copper cable era" to the "fiber optic era". GEPON ONU, as the best solution for wired user access, plays a pivotal role in the overall network construction of NGN (Next generation Network) in the future.

Onus are divided into active optical network units and passive optical network units. A device equipped with an optical receiver, an uplink optical transmitter, and a network monitor of multiple bridge amplifiers is called an optical node.

The ONU device is composed of common units such as core function circuit, power supply and management, and communication interfaces. The core function block includes user and service reuse functions, transmission reuse functions, and ODN interface functions.

The user and service reuse functions include assembling the information from each user, distributing the information to be transmitted to each user, and connecting a single service interface. The transmission multiplexing function includes analyzing the signal coming from the ODN and taking out the part belonging to the ONU and arranging the information to be sent to the ODN reasonably; The ODN interface function provides a series of opto-physical interface functions, including optical/electrical and electrical/optical conversion.

If each ONU uses more than one optical fiber to connect to the ODN, then there is more than one physical interface. The ONU service function block provides user functions, including providing user service interface and adapting user information to 64kbit/s or n×64kbit/s. This function block can serve one or more users and can provide signaling conversion function according to its physical interface. The ONU general function block provides power supply functions and system operation, management, and maintenance (OAM) functions. The power supply function includes AC to DC or DC to AC. The power supply mode is local power supply or remote power supply. Several ONUs can share one power supply.

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How do you pronounce onu, the full Chinese name of onu

Optical Network Unit (ONU) Optical network unit, also known as an optical node. Onus are divided into active optical network units and passive optical network units. A device equipped with an optical receiver, an uplink optical transmitter, and a network monitor of multiple bridge amplifiers is called an optical node. The PON uses a single fiber to connect to the OLT, which is then connected to the ONU. The ONU provides data, IPTV (interactive network TV), voice (Integrated Access Device) and other services to truly realize triple-play applications.

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onu Classification - Active and passive

Onus are divided into active optical network units and passive optical network units.

Active optical network unit

Active optical network unit is mainly used in the integration of three networks, which integrates CATV full-band RF output. High quality VOIP audio; Layer 3 routing mode, wireless access and other functions, easy to achieve the integration of three networks terminal equipment access.

Passive optical network unit

A passive optical network unit (GPON) is a user-side device of a GPON (Gigabit Passive optical Network) system. It is used to terminate traffic from an OLT (optical line terminal) through a PON (passive optical fiber network). In conjunction with OLT, the ONU can provide a variety of broadband services to connected users. For example, Internet surfing, VoIP, HDTV, VideoConference and other services. As a user-side device for FTTx applications, ONU is a necessary terminal device with high bandwidth and high cost performance for the transition from the "copper cable era" to the "fiber optic era". GPON ONU, as the best solution for wired user access, will play a pivotal role in the overall network construction of NGN (Next generation Network) in the future.

Onu classification - FTTx

The Optical Network Unit (ONU) is an Optical Terminal connected by optical fibers. It should be used in conjunction with the Optical Line Terminal (OLT), which is the central equipment room of an ISP.

According to the location of the ONU, FTTx+LAN can be divided into FTTC, FTTB, FTTH and other access modes.