Hello, friend.
The AST4 board is mainly used to process and regenerate optical supervisory signals. In addition, the AST4 board supports the IEEE 1588v2, physical-layer clock, and line fiber quality monitoring.
For detailed functions and features, refer to Table 1.
Table 1 Functions and features of the AST4 board
Function and Feature | Description |
|---|
Basic function | Receives, processes, and transmits two optical supervisory signals. Supports transparent transmission of two channels of FE electrical signals. Supports physical clock function. Supports a maximum of 37.5 dB transmission. (Not including the loss of the FIU/DFIU/DSFIU board) NOTE: TM3/RM3 and TM4/RM4 are currently unavailable. |
Operating wavelength | When working with the DSFIU01/DSFIU02 board, 1511 nm optical modules are configured at the TM1/RM1 ports. 1491 nm optical modules are configured at the TM2/RM2 ports. TM3/RM3 and TM4/RM4 are currently unavailable. When the AST4 board works with the DFIU03/DFIU04/BAS1 board, the supervisory channel signal wavelength is 1511 nm. NOTE: The wavelength of the optical module usually refers to the wavelength at the transmit port. |
Loopback | Supports outloops. |
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. The Fiber Doctor Management System Software Fee License needs to be purchased for this function. |
IEEE 1588v2 | Supported. |
G.8273.2 | Supported. |
G.8275.1 | Supported. |
Thanks.
