Edimax Technology VO-4500SK - Manual (Page 16)

Step 3：
Right click on Middleware icon and choose “Advance Setting”.
When the USB VoIP Gateway Box
is ready, the Middleware icon will
appear red. When the USB VoIP Gateway Box
is not ready or when Skype is not
running, the Middleware icon will
appear gray.
Step 4：
The Middleware application window pops up as below.
Step 5：
You may set the functions on the Middleware application.
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