Check VOS3000 services by the following aspects:
1. Check VOS3000 login ports
Input command: ss -anput | grep 1202 
The results show that port is normal.
2. Check VOS3000 database
Input command: ss -anput | grep 3306 
The results show that database is normal.
3. Check VOS3000 web
Input command: ss -anput | grep 1210 
Input command: ss -anput | grep java 
The results show that web is normal.
4. Check MBX3000
Input command: ss -anput | grep mbx 
The results show that MBX3000 is normal.
5. Check valueadded
Input command: ss -anput | grep 5055 
The results show that valueadded is normal.
6. Check dial
Input command: ss -anput | grep 5065 
The results show that dial is normal.
7. Check IP-PBX
Input command: ss -anput | grep 5075 
The results show that IP-PBX is normal.