The HSC1 board is mainly used to processes and regenerates one OSC optical supervisory signal in one directions. Table 1 describes the functions and features of the HSC1 board. Table 1 Functions and features of the HSC1 board Function and Feature Description Basic function Receives, processes, and transmits one OSC signal. When containing 100 Gbit/s wavelength, the system supports transmission over a span of 48 dB attenuation. When containing no 100 Gbit/s wavelength, the system supports transmission over a span of 53 dB attenuation. Technical features The OSC channel has no limitation on the distance between two optical line amplifiers (OLAs). The failure of an OLA does not affect the performance of the OSC channel. The HSC1 board can be independent of the SCC board. If the SCC board is not in place, the HSC1 board transparently transmits the ECC channel contained in the OSC signal. Regeneration function Performs full 3R regeneration of the received OSC signal. At each site provisioned with an HSC1 board, the OSC signal can be correctly dropped and local monitoring and management information can be added to the OSC signal. Operating wavelength of the OSC channel The operating wavelength of the TN11HSC1 board is 1510 nm. The operating wavelength of the TN12HSC1 board is 1511 nm. Loopback Inloop Supported Outloop Supported Optical-layer ASON Supported Parameter Unit Value Signal rate Mbit/s 4.096 Operating wavelength range nm 1500 to 1520 Signal coding - CMI Launched optical power dBm 5 to 10 Receiver sensitivity dBm <,= -48 Receiver overload
