If you are running the SIPPhoneFX for the first time, you will need to type in your SIP-Account Data. You can find this under:
settings() --> SIP-Account Settings ().

After configuring the SIPPhoneFX you can start calling. Its easy as using a regular telephone. Just type in the phone number or the sipAdress into the text field and click the call button to dial.

The simple to use address book of the SIPPhoneFX makes it easy to manage your contacts.

To get an overview of your dialed and received calls use the integrated call history function. The history can be deleted with the button at the bottom of the view.