Huawei OptiX OSN 9800 OTM Nodes apply to terminal sites. An OTM node can be either an 80-wavelength or a 40-wavelength system. 80-wavelength system: When serving as an 80-wavelength system, an OTM node optical multiplexer, demultiplexer, and ITL boards. The OTM node can be expanded to provision 80 wavelengths without interrupting services. 40-wavelength system: When serving as a 40-wavelength system, an OTM node optical multiplexer and demultiplexer boards. The OTM node can be expanded to provision 40 wavelengths without interrupting services. Signal Flow In the receive direction: The line signal received from west is separated into an optical supervisory signal and a main-path optical signal. The optical supervisory signal is sent to the optical supervisory channel (OSC) board for processing, and the main-path optical signal is sent to an amplifier board for amplification. The ITL board splits the amplified main-path optical signal into a C_EVEN multiplexed ...
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