Transmission & Access

1. What is the principle of HA?
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   HA is short for High Availability. The working modes of high availability are as follows: 1. Master/Slave Mode (Asymmetric Mode) Working principle: The active node is working and the standby node is in the monitoring preparation state. When the active node breaks down, the standby node takes ...
2. What is the relationship between Frame Length and Transmission Distance?
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   Due to the limitation of CSMA/CD algorithm, the frame length of Standard Ethernet should not be smaller than 64 bytes, which is determined by the maximum transmission distance and the working mechanism of collision detection. The use of a minimum frame length prevents situations in which a ...
3. What is the diffrence among OSN 9800 Subracks?
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   Huawei’s OptiX OSN 9800 is a next-generation high-capacity, intelligent, and converged optical and packet Optical Transmission Network (OTN) platform for 100G and beyond. Based on the industry-leading T-bit universal switching chip, the platform supports OTN, Virtual Circuit (VC) and ...
4. What is the 100G/200G/400G client-side interface technology?
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   Huawei has some module supports long-haul transmission,including CXP、CFP、CFP2 and QSFP28 module. Long-Haul Transmission:100G Huawei 100G CFP module supports a 5000 km transmission distance without electrical regeneration, equivalent to that supported by MSA modules. It is the ...
5. Composition of GPON Network
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   A GPON system consists of the Optical Line Terminal (OLT), Optical Network Unit (ONU), and Optical Distribution Network (ODN).Generally, OLTs are placed in a CO equipment room and mainly used to converge optical signals from ONUs. Depending on the access scenario,ONUs can be deployed in ...
6. Functions of the FIU Board
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   An FIU board multiplexes and demultiplexes signals the main optical path and OSC signals. The RC port of the FIU board receives signals from the main optical path and the RM port receives signals from the OSC. The two types of signals are then multiplexed into one signal using the multiplexer ...
7. What are default username and passwords for logging into an ONT?
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   Different ONTs and version have different user name and password, for example: • EG Series The default user name and password for common users are Epuser and userEp, respectively. • Other Series The default user name and password for common users are:    V300R016C10 and ...
8. What are the features supported by the ODU?
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   The ODU is the outdoor unit of the microwave system. The ODU is mainly used to convert the frequency or amplify the power of the signals. Functions and Features The ODU is used for the frequency conversion and amplification of signals. The ODU implements the following functions: ♦ In ...
9. The differences between 10GE LAN and 10GE WAN
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   Their bottom-layer encapsulation structures are different. A 10GE WAN signal contains an SDH/SONET encapsulation header but a 10GE LAN signal does not. 1. 10GE LAN services: Ethernet MAC frames are processed based on 66B/64B line coding and then are directly transmitted over an optical ...
10. Differences between VDSL SPL boards
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    The VDSL splitter board is divided according to the number of access users and can be divided into two categories: 24 channels, 48/64 channels: The 24-way splitter board is used together with the 24-way VDSL2 service board. The 48 / 64-channel splitter board is used together with the 48 / ...