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The Huawei OSN3500 SSN1AUX single board provides various management interfaces and auxiliary interfaces for the system, as well as centralized backup of +3.3V power supply for each single board in the subrack, and other functions and features.
Huawei OSN 3500 SSN1AUXFunctions and Features
The AUX single board provides various management interfaces and auxiliary interfaces for the system, and provides centralized backup of +3.3V power supply for each single board of the subrack, and other functions and features.
The specific functions and features of the AUX single board are shown in Table 1.
Table 1 Functions and features of AUX single board
| Item | Description |
|---|---|
| Management Interface |
|
| Auxiliary Interface |
|
| External Time Interface |
|
| Clock Interface |
|
| Switching Interface |
|
| Cabinet alarm light |
|
| Public Service Interface |
|
| External Single Board Communication Interface | Provides 1 external single board communication interface COM. |
| Internal Communication | Realizes the inter-board communication function between each single board of the subrack. |
| Power supply backup and detection |
|
| Sound alarm | Supports audible alarm and alarm cut function. |
| Network Port Connection Status Detection | Support network port connection status detection. |
| Note: COM port is only for external single board communication, and cannot be used arbitrarily, otherwise it may lead to abnormal Ethernet communication between boards. | |
Table 2 External Time Input Interface
| External Time Input | TOD interfacea | 1pps interface |
|---|---|---|
| 1st channel | S1 | S3 (with RS422 level) |
| S1 | ALMI4 (using TTL level) | |
| 2nd circuit | S2 | S4 (using RS422 level) |
| S2 | ALMI4 (using TTL level) | |
| a: The TOD interface can be set to RS232 or RS422 level as required. | ||
Table 3 External time output interface
| External time output | TOD interfacea | 1pps interface |
|---|---|---|
| 1st | S1 | S3 (RS422 level) |
| 2nd way | S2 | S4 (RS422 level) |
| a: The TOD interface can be set to RS232 or RS422 level as required. | ||
Instructions:
In order to ensure the normal use of conference calls, the size of each conference call subnet should not exceed 10; if it exceeds 10, please divide it into different conference call subnets.
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