Start PAS Plus and click on "Settings".
Click on "Telephony & Internet", highlight "PAS Dial (App)" and finally click on "Settings & Profiles".
Wait a moment. In the upper area "Available PAS-Dials" your smartphone will appear. With a double click you start the coupling.
On your smartphone, you must now confirm the pairing. Then click on "Ok" to finish the configuration and then save the settings by clicking on "Ok" in the settings window.