For setting up the web-phone please open your internet explorer and navigate to webphone.ytel.com.
After you get to that site you will get a notification asking you to install a SECURAX plugin.
Press the install button and wait for the zoiper web-phone to appear at the bottom of the page.
This will let you know the installation was successful.
If a firewall notification pops up make sure to allow the program to make changes to your computer.
Once you log in to your system this program should automatically work.
If not chances are you need to allow the plugin to be used.
This notification will normally show up on the right side of your address bar as a puzzle piece.