Visit the official AGG Software website. They often provide discounts for upgrading older "upd top" (updated/top version) licenses to the current release.
The grey "Trial" banner vanished, replaced by a steady green light: Registered. advanced pbx data logger activation key upd top
The unique alphanumeric code provided upon purchasing a legitimate license from AGG Software. It unlocks the software from trial mode to unlimited functionality. Visit the official AGG Software website