Asus P5B - Manual (Page 39)

ASUS TeleSky User Manual 
3. Enter the desired SkypeOut number or speed dial.
4. Press ‘*’ after you have completed dialing to dial out
Skype calls.
5. Hang up the phone to end your call.
If you choose the latter, additional radio buttons become
available:
Check the radio boxes to select the dialing mode; either
through Skype or through your landline (the default
setting).
Once all settings have been completed, click Apply and OK
to save all changes.