UIXP participants can choose to be billed quarterly or annually on the following basis:

• Quarterly invoices shall be issued at (or near) the beginning of each quarter.
• Annual invoices shall be issued at (or near) the beginning of each calendar year.

UIXP invoices must be paid based on the following terms:

• Quarterly invoices: 60 days from the date of issue.
• Annual invoices: 60 days from date of issue.

Unpaid invoices shall incur the following penalties:

• Migration to a lower service tier after each quarter of non-payment.

The above policy shall apply equally to all participating networks though exceptions can be made at the management's discretion.