In addition to the existing payment methods available (cash, check, etc.), you can also process payment for subscribers using tokens.
isp config - subscriber portals - online signup - enabled
Getting Started: Allow TOKEN payment method

  1. Open the ISP Configuration window, go to the Subscriber PortalsOnline Signup panel, and then the Payment Options section.
  2. Click the Token option to allow token as payment method.
  3. Click the Save button to save changes.

isp config - subscriber portals - online signup - disabled to billing options tab
isp config - subscriber portals - online signup - enabled to billing options tab
Once the Token option has been checked, the TOKEN will be displayed as an option in the Card combobox in the Billing Options tab.
billing options tab - mutliple tokens
If you wish to add multiple tokens to an account, you can click on the + button to display the multiple credit card/token panel. From within the panel, you can click on the + button to add an empty row where you can enter the information of the additional token for the subscriber.