Error message:

An error occurred while retrieving information from the NCP. There may be a problem with your network connection. Error info: [12002 - Communications error: The request has timed out.]

I got this error message earlier while trying to download call records from the NBX. The problem turned out to be Internet Explorer 7. After uninstalling IE7 and restarting my computer, it worked! The funny thing is it worked before even when I had IE7 installed. So I reinstalled IE7 back just to make sure it’s really IE7 causing this problem and sure enough the problem came back.

This problem is actually listed in the 3Com NBX R6.0.35 Release Notes:

NBX Call Report can have problems retrieving records when it is running on a computer that has Internet Explorer 7 installed. If you experience this problem, you can uninstall IE 7 or run NBX Call Reports from a different computer where IE 7 is not installed. Note: NBX R6.0 and the optional applications have not yet been tested with IE 7. (ID 46308)

You can download the entire release notes from here: 3Com NBX R6.0.35 Release Notes