Here are the instructions for downloading the free software X-Lite.

1. Get the software at the following link: Download X-Lite

2. Launch the software by clicking on the icon on your Desktop, or by finding it in the menu on your operating system.

Version 3.0

3. When you start the software for the first time, this window will appear. Click "ADD" and enter your configuration data as indicated below.

Version 2.0

3. Audio calibration: this is the first task for the software to complete. "Audio calibration" improves voice quality during conversation. Follow the simple instructions given by the software: choice of device (speakers or headset, microphones, etc.) and verify the volumes of recording and listening.

   Note: If you are impatient and want to calibrate the audio at a later time, you may cancel the operation and go on to the next point. To reactivate calibration at a later time, right click on the main window of the program and choose "Audio Tuning Wizard".

4. In the configuration menu:

Main Menu --> System Setting --> Sip Proxy --> Default

... enter the following parameters:

Display Name: your name
User name: your unique personal identification code (also called URI) that you received via email from Messagenet after registering for FreeNumber or SmartNumber.
Authorization User: as above
Password: the password you received via email from Messagenet after registering for FreeNumber or SmartNumber.
Domain/Realm: sip.messagenet.it
Sip Proxy = sip.messagenet.it:5061
Send Internal IP: Always

Now the configuration process is finished. You can close the window and start calling by dialling the number with the numerical keypad and using the conventional icons.