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1. The accounting subsystem's default value for earlyAttemptState is disabled. This can result in lost ATTEMPT records (e.g. calls that hit the SBC, fail, but for which there is no accounting record that the call ever hit the box).
   Enabling this value can help with troubleshooting when setting up a system.

   Code Block
   language none
   % set oam accounting admin earlyAttemptState enabled

   
   
   

2. The eventLog subsystem's default values are not optimized for heavy traffic. Set, the filterWriteMode to 'optimize'.

   Code Block
   language none
   % set oam eventLog typeAdmin system fileWriteMode optimize fileSize 8192 filterLevel minor % set oam eventLog typeAdmin debug fileWriteMode optimize fileSize 8192 filterLevel major % set oam eventLog typeAdmin security fileWriteMode optimize fileSize 8192 filterLevel major % set oam eventLog typeAdmin acct fileWriteMode optimize fileSize 8192 filterLevel info % set oam eventLog typeAdmin trace fileWriteMode optimize fileSize 2048 filterLevel info

   
   
   

3. Changing the time zone causes the SBC application to restart on both units. Make sure the time zone is set correctly before live traffic is started.
   
   
4. When using PSX for routing, ensure the system name configured during the SBC application installation is the same as what will be configured on the PSX.
   Also ensure the trunk group names are the same between SBC and PSX. Trunk group names should be in ALL CAPS. Just like the GSX 9000, the trunk group name and node name are sent in the policy request to the PSX. If there is a mismatch, the PSX will not find the node and trunk group combination, thus the call will fail to route properly.
   
   
5. Back up your system at least once a week. If many configuration changes have been made, go ahead and back up the system after the changes. These backups allow you to roll back to a previous configuration in the event of an error.