The main services of checking vos are as follows:
1. Check if the VOS login port is online:
Enter the command: ss -anput | grep 1202

The figure above shows that the login port is normal.
2. Check if the MySQL database is online:
Enter the command: ss -anput | grep 3306

The figure above shows that the database port is normal.
3. Check if the web is online:
Enter the command: ss -anput | grep 1210

Enter the command: ss -anput | grep java

The above two figures show the results, indicating that the web port is normal.
4. Check if mbx is online:
Enter the command: ss -anput | grep mbx

The figure above shows that the softswitch port is normal.
5. Check if the value-added service is online:
Enter the command: ss -anput | grep 5055

The figure above shows that the value-added service port is normal.
6. Check if the direct dialing service is online:
Enter the command: ss -anput | grep 5065

The figure above shows that the direct dialing port is normal.
7. Check if the corporate switchboard service is online:
Enter the command: ss -anput | grep 5075

The figure above shows that the enterprise switchboard port is normal.