D-Link D DPH-50U DPH-50U Quick User Manual page 13

STEP 3:
When the installation completes you should see the following
message appear near your system tray and a new telephone icon (circled in
red below) in your system tray as shown below.
The telephone icon indicates that the DPH-50U software is installed and
running and that you can start making calls via DPH-50U and the DPH-50U
VoIP USB Phone Adapter.
You will see a new program group named D-Link USB Phone Adapter,
accessed from the Start button -> All Programs as shown below.