High Reliability of ATCA USN

High Reliability

The USN9810 is highly reliable
because of the following features:

• Hardware redundancy design

  
  

  All critical boards are configured
  in 1+1 or N+1 backup to ensure high reliability of the system.

  
  

• System overload control

  
  

  In case of center processing
  unit (CPU) overload or resource congestion, the USN9810 adjusts the
  traffic smoothly to avoid system down.

  
  

• Fault Avoidance

  
  

  The USN9810 provides protection mechanisms
  to avoid the following system faults:

  
  
  • System power off
  • Maloperation on system power switch
  • Lightning surge on the system power High voltage and low voltage
  • Short circuit of power supply
  • Lightning surge on E1/T1 links
  • Current surge and high voltage on the power supply and interfaces
  
  

• Backup of important data

  
  

  The USN9810 automatically backs
  up important data, such as the configuration data, performance data,
  and operation logs.

  
  

• Operation security management

  
  

  Different management privileges
  are assigned to different users. During the user login, the USN9810
  checks the user identity. After user login, the USN9810 maintains
  the complete operation to ensure system security.

  
  

• CG redirection and bill buffering

  
  

  When the active charging
  gateway (CG) or the link to the active CG fails, the USN9810 sends
  the bills to the standby CG. If the standby CG is also faulty, the
  USN9810 stores the bills in its buffer.