What does the "unknown" SIC status shown on SmartConsole mean?

Question

Quizplus · Accepted Answer

The most typical status is  Communicating . Any other status indicates that the SIC communication is problematic. For example, if the SIC status is  Unknown  then there is no connection between the Gateway and the Security Management server. If the SIC status is  Not Communicating , the Security Management server is able to contact the gateway, but SIC communication cannot be established.

What Does the "Unknown" SIC Status Shown on SmartConsole Mean