Huawei OSN 3500 AUX Board SSN1AUX

Item

AUX

Management interface

1. Provides the OAM interface, which supports the X.25 protocol.
2. Provides the management serial interface F&f.
3. Provides the 10M/100M NM interface.

Auxiliary interface

1. Provides the serial interfaces Serial 1–Serial 4, which can function as four broadcast data interfaces or two pairs of time interfaces. The two functions of the interfaces are mutually exclusive.
2. The two pairs of time interfaces work in full-duplex mode and support synchronous time input and output of two channels.
3. Both the time interface and the broadcast data interface support the RS-422 level and RS-232 level.
4. Provides one F1 interface for the 64 kbit/s codirectional data channel.

External time interface

1. Supports the input and output of two channels of time signals, with the external time transmitted in 1pps+TOD mode.
2. For details about the external time input and output interfaces, see Table 2 and Table 3.

Clock interface

1. Provides two BITS clock input interfaces and two BITS clock output interfaces (impedance: 120 ohms).
2. Provides two BITS clock input interfaces and two BITS clock output interfaces (impedance: 75 ohms).

Alarm interface

1. Provides 16-input and 4-output alarm interfaces.
2. Provides 4-output alarm cascading interfaces.

Cabinet alarm indicator

1. Provides four cabinet alarm indicator output interfaces.
2. Provides four cabinet alarm indicator input cascading interfaces.

Orderwire interface

1. Provides two NNI connection signaling interfaces.
2. Provides one orderwire phone interface.
3. Provides two NNI voice interfaces.