Assuming you would like instructions on how to use the X-Lite softphone:
First, you need to download the X-Lite softphone onto your computer.
Once it has been downloaded, open the program and start the installation.
Follow the prompts and agree to the terms and conditions.
Once the installation is complete, launch the program.
Sign in using your account information or create a new account.
Once you are signed in, you will see the main interface.
From here, you can start making calls, managing your contacts, and changing your settings.
To make a call, simply click on the 'Calls' tab and then enter the phone number you wish to call in the 'Number' field.
Click the 'Call' button and your call will be placed.
X-Lite is a softphone that allows you to make VoIP calls from your computer. It is a free program that you can download from the internet.