ONU (optical network unit) optical node. ONU is divided into active optical network unit and library passive optical network unit.Generally, the equipment equipped with network monitoring including optical receiver, uplink optical transmitter and multiple bridge amplifiers is called optical node.
ONU Function
1、Choose to receive the broadcast data sent by the OLT;
2、Respond to the ranging and power control commands issued by the OLT; and make corresponding adjustments;
3、Cache the user’s Ethernet data and send it to the upstream in the sending window allocated by the OLT.
ONU Equipment
Fully comply with IEEE 802.3/802.3ah
·Receiving sensitivity up to -25.5dBm
·Transmit power up to -1 to +4dBm
·PON uses a single optical fiber to connect to the OLT, and then the OLT connects to the ONU. ONU provides services such as data, IPTV (i.e. interactive network television), voice (using IAD, i.e. Integrated Access Device) and other services, truly realizing “triple-play” applications
·Highest rate PON: symmetrical 1Gb/s upstream and downstream data, VoIP voice and IP video services
·ONU “Plug and Play” based on automatic discovery and configuration
·Advanced quality of service (QoS) functions based on service level agreement (SLA) charging
·Remote management capabilities supported by rich and powerful OAM functions
·High sensitivity light receiving and low input light power consumption
·Support Dying Gasp function