Version 2.2.3 utilized a method known as KMS (Key Management Service) emulation. Legitimate enterprises use internal KMS hosts to activate volume licenses without phoning home to Microsoft every 180 days.
The Toolkit essentially installed a fake KMS server locally on your PC. It would trick your copy of Office 2010 into thinking it was talking to a legitimate corporate server, thereby granting a 180-day activation cycle. Office 2010 Toolkit 2.2.3
While the mechanics are interesting, the reality is dangerous. Using the Office 2010 Toolkit 2.2.3 today is a catastrophic security decision. Here is why: Version 2
Office 2010 Toolkit.exe /silent /activate office=2010