The CSHUA is the integrated Hybrid/Packet/Routing system control, switching, and timing board. This board supports L3VPN functionality
1- Switching capability Provides a 10 Gbit/s packet switching capacity.
2- Cross-connect capacity Supports VC-12/VC-3/VC-4 full time-division cross-connections (equivalent to 32×32 VC-4s).
3- System control and communication Manages, monitors, and controls the running status of the IDU, and works as a communication service unit between the NMS and boards, thereby allowing the NMS to control and manage the NE.
4- Provides the system clock and frame headers of service signals and overhead signals for the other boards by tracing any of the following clock sources: l External clock l SDH line clock l PDH tributary clock l Microwave link clock l Synchronous Ethernet clock.
5- Supports the following clock protection schemes: l Protection based on clock source priorities l Protection by running the SSM protocol l Protection by running the extended SSM protocol.
6- Supports IEEE 1588v2 time synchronization. Supports ITU-T G.8275.1 time synchronization.
7- Data the communication network (DCN) Out-band DCN Supports a maximum of 13 data communication channels (DCCs). In-band DCN The DCN bandwidth is configurable.
8- Provides the SNMP Get and Set functions for managing devices, excluding configuring L3VPN services.