Please observe the following steps when installing a softphone on your computer:
Here is a selection of free softphones:
In case you need help with adjusting the settings of the selected softphone, please observe the following step-by-step-instructions.
In your SIP account you can carry out the following settings:
Username: your SIP username
Password: your SIP passwort
Display name: Please enter your name here
Authorization user name: your SIP username
Alternatively, you can also enter the call number directly on the keypad.