Timing Transmission Unit GPON Optical Line Terminal HuaWei TN12ST2-002 03022 VUU
HuaWei TN12ST2-002 03022VUU dual optical monitoring channel and clock transmission unit (with OTDR)
Description of TN12ST2-002
ST2: bidirectional optical supervisory channel and timing transmission unit
- Version Description
The available functional version of the ST2 board are TN11, TN12, and TN13.
- Update Description
This section describes the hardware updates in V100R006C01 and later versions as well as the reasons for the updates. Any product versions that are not listed in the document means that they have no hardware updates.
Because it is a type of optical supervisory channel unit, the ST2 board processes two channels of supervisory signals in opposite directions, transmits and extracts the overhead information about the system, processes and sends the overhead information to the SCC. In addition, the ST2 board can process the IEEE 1588v2 protocol for time synchronization. The ST2 board also supports transparent transmission of two channels of FE electrical signals. In addition, the TN12ST2 board supports line fiber quality monitoring.The TN13ST2 board supports the ITU-T G.8275.1 protocol.
- Functions and Features
The ST2 board is mainly used to process and regenerate optical supervisory signals. In addition, the ST2 board supports the IEEE 1588v2 function. In addition, the TN12ST2 board supports line fiber quality monitoring.
- Working Principle and Signal Flow
The ST2 board consists of the optical receiving module, service processing module, EOW module, 1588 module, optical transmitting module, control and communication module, and power supply module.
- Front Panel
There are indicators and interfaces on the front panel of the ST2 board.
- Valid Slots
One slot houses one ST2 board.
- Optical Interfaces
This topic describes the interface information on the U2000.
- Parameters Can Be Set or Queried by NMS
This section lists the board parameters that can be set or queried by using the NMS.
- ST2 Specifications
Specifications include optical specifications, dimensions, weight, and power consumption.
Specifications of TN12ST2-002
|Function and Feature
Receives, processes, and transmits two optical supervisory signals.
Supports transparent transmission of two channels of FE electrical signals.
Supports IEEE 1588v2 function.
Supports physical clock function.
Supports a maximum of 40.5 dB transmission.(Not including the loss of the FIU or SFIU board)
When the ST2 board is used with the STG board in an OptiX OSN 8800 universal platform subrack, the board can process physical clock signals and IEEE 1588v2.
The OSC has no limitation on the distance between two optical line amplifiers. The failure of an optical line amplifier does not affect the performance of the OSC.
The ST2 board is independent of the SCC. When the SCC is not properly installed, the ST2 board can still ensure the pass-through of ECC with the two optical interfaces and monitor other stations.
||The ST2 board transmits signals from section to section. It also has the 3R function. In each regenerating station that has optical amplifiers, information can be correctly received and new supervisory signals are added.
When the ST2 board works with the SFIU board, the signal wavelengths of supervisory channel for TM1 optical port is 1511 nm, and the signal wavelengths of supervisory channel for TM2 optical port is 1491 nm.
When the ST2 board works with the FIU board, the supervisory channel signal wavelength is 1511 nm.
|Line fiber quality monitoring
The line fiber quality monitoring function can be used on the NMS, and the NMS will display monitoring figures and data. For details, see the Fiber Doctor System in the Feature Description.
The Fiber Doctor Management System Software Fee License needs to be purchased for this function.
Only the TN12ST2 board supports line fiber quality monitoring.
|Overhead processing and transmission
||The overhead can be processed and transmitted between the OLSP/OLSPA/OLSPB board and the TN12ST2/TN13ST2 board.
||The board supports pluggable optical modules that use 1511 nm and 1491 nm wavelengths.
Supported. For details, see the Synchronization in the Feature Description.
Only supported by the TN13ST2 board.
||Supported. For details, see the Synchronization in the Feature Description.
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