Huawei SSN1SXCSA Board Product Overview Huawei SSN1SXCSA Board (SXCSA for short) provides functions such as service scheduling, clock input, and output in the Huawei OSN3500 optical transceiver system. Huawei SXCSA boards support functions and features such as service scheduling and clock input and output. Huawei SSN1SXCSA supercross clock board supports cross clock board to provide timing information to other boards in the system, to achieve the aggregation and scheduling of various services, to complete the communication with other boards in the system and to configure and manage other boards. The Huawei SXCSA board consists of a synchronization timing module, a cross-connect module, communication and control module, and a power module. Huawei SSN1SXCSA Board Product Feature Protection method Supports 1 + 1 hot backup of the crossover of the board and the clock unit, and the protection mode is non-recovery by default. provide standard system synchronized clock. Supports the processing of S1 byte to implement clock protection switching. Support SSM information, clock ID extraction, insertion and processing functions. Provide real-time RTC. Through the AUX board: Support input/output 2 timing signals with an impedance of 75? and frequency of 2MHz or 2048kbit / s, and provide the function of selecting external timing sources. Support input/output 2 timing signals with an impedance of 120? and frequency of 2MHz or 2048kbit / s, and provide the function of selecting external timing sources. The clock function provides real-time RTC. Supports high-precision clock synchronization and meets the IEEE 1588v2 protocol. Access time information through the S1 to S4 and ALMI4 interfaces of AUX. S1, S3, and ALMI4 correspond to the first off-road time, and S2, S4, and ALMI4 correspond to the second off-road time. Functions and features Description Brand Huawei Model SSN1SXCSA Basic Function Complete 200Gbit / s VC-4 high-order crossover, 20Gbit / s VC-3 / VC-12 low-order crossover, and 155Gbit / s access capability. Service process Provides flexible scheduling capabilities for services, supports non-blocking full crossover, and supports multicast and broadcast services. Provides communication functions with other boards. Supports micro-switches to achieve smooth protection switching of the cross-board. VC-4-4c, VC-4-8c, VC-4-16c, VC-4-64c, VC-4, VC-12, VC-3, and AU-3 levels of SNCP protection are supported. Support VC-4-4c, VC-4-8c, VC-4-16c and VC-4-64c cascade services. Supports up to 40 linear multiplex segment protection groups. Supports up to 12 ring multiplex segment protection groups. Supports up to 2016 SNCP protection pairs. Supports up to 592 SNCMP protection pairs. Supports up to 512 SNCTP protection pairs. Protection method Supports 1 + 1 hot backup of the crossover of the board and the clock unit, and the protection mode is non-recovery by default. basic Function Provides standard system synchronized clock. Other functions Supports processing of S1 byte to implement clock protection switching. Support SSM information, clock ID extraction, insertion and processing functions. Provide real-time RTC. input Output Through the AUX board: Support input/output 2 timing signals with an impedance of 75? and frequency of 2MHz or 2048kbit / s, and provide the function of selecting external timing sources. Support input/output 2 timing signals with the impedance of 120? and frequency of 2MHz or 2048kbit / s, and provide the function of selecting external timing sources.