ZyXEL Communications ZYWALL USG 20 Manual page 67

• Trial Service Activation: You can try a trial service subscription. The trial
period starts the day you activate the trial. After the trial expires, you can buy
an iCard and enter the license key in the Registration > Service screen to
extend the service.
Figure 30 Registraton: Registered Device
ZyWALL USG 20/20W User's Guide
Chapter 4 Installation Setup Wizard
67