OSC boards that can work together with the SFIU board

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The OSC board that works with the SFIU board must be ST2, because the ST2 board supports either the 1511 nm or 1494 nm pluggable optical module. When the ST2 board works with the SFIU board, the operating wavelength of its RM1/TM1 port is 1511 nm and that of its RM2/TM2 port is 1491 nm. The SFIU board converges these two monitoring signals so that they can be transmitted over one optical fiber, implementing the commissioning-free and compensation-free functions defined in IEEE 1588v2.

Other related questions:
Whether the HBA board can be used together with the SFIU board
No. The HBA board must be used together with the TN13FIU02 board.

Cooperation between ST2 and SFIU
An SFIU board multiplexes the main path signals and OSC signals into a single communications channel, and demultiplexes these signals. The OSC board that can work with the SFIU board can only be ST2. The SFIU board sends OSC signals to the ST2 board through the OSC1 optical port and receives OSC signals from the ST2 board through the OSC2 optical port.

FIU ports available for connection to the OSC board
An OSC board can be connected to the TM or RM port of an FIU board.

Functions of the SFIU board
The SFIU board is an optical multiplexing and demultiplexing unit. It multiplexes and demultiplexes signals transmitted over the main optical channel and OSC, avoiding commissioning and compensation for IEEE 1588v2 signals.

Whether boards in compatible mode and boards in standard mode can be interconnected or used together
1. On the backplane side, the boards in compatible mode and standard mode can be interconnected with each other without any restrictions. 2. On the line side, the boards in compatible mode and standard mode can be interconnected only when the following settings of the boards are the same: timeslot mode (Assign consecutive or Assign random), port rate (standard or speedup mode), mapping path, FEC mode, channel number, differential mode (differential or non-differential), and modulation format (DQPSK, DRZ, or ODB).

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