Once you have received the link to download the demo, extract downloaded file and import image to VMware Player which can be downloaded from here.

Then, follow the following steps:

Please note this testing option has limitation of 10 simultaneous calls
Default Login details:

Default root password is: kolmisoft
GUI login details are:

User: admin

Password: tgtZIgEmrxCy

IMPORTANT! Please change default passwords even if you are running server on testing environment.