SSR2AUX is a system auxiliary interface board for Huawei OSN1500B, provides various management and auxiliary interface for the system, and provides the centralized backup for +3.3v power supply of the boards in Subrack. is a necessary board for OSN1500B. Provides the OAM/F&f interface,the 10M/100M interface. Provides two BITS clock input interfaces and two BITS clock output interfaces (impedance: 120 ohms). Provides 3-input and 1-output alarm interfaces. Provides one interface used for communication with external boards. Realizes communication boards in the subrack. Supports power supply backup and checking. Supports the audible alarm and the clearing of the audible alarm.
