This variable applies only in a thin client environment. TC_SERVER_TIMEOUT lets you determine how many seconds (from 0 to 32767) the client waits for a response from the server. If the client receives no response from the server in the specified time period, the following message box appears:

The remote host is not responding.
Press OK to close this program.
Press Cancel to wait another %s seconds.

where %s is the value of TC_SERVER_TIMEOUT. The default value is "20".