PhoneBurner offers a fully featured 60 minute trial use of the limited version of the software with no credit card required to start using the system.
When you reach the end of your 60 minute trial or run out of minutes on your 7.5 hour account, you will be notified and asked to upgrade or add more minutes to the account depending on your account level. This will stop any session you have in progress and display either message below:
Free Trial account : Upgrade notice
Limited Account Message: