Asus P5B - Manual (Page 18)

 ASUS TeleSky User Manual
Connecting to Make Only Skype Calls
To connect your telephone to the Telecom Adapter Card and
make calls solely through Skype, follow the steps below.
To make the connections, do the following:
Connect your one end of the telephone cable, enclosed in
this package, to the PHONE jack on the Telecom Adapter
Card and the other to the connector jack on the phone itself.
PSTN PHONE
LI
NE
PHONE
PHONE