Items which are not complete in themselves, and are attached to a capitalized or expensed equipment item. Add-ons are usually assigned a component asset number (2001xxxxxxxC) decal. Add-on parts must have a value of $1500 or more, and increase the value or useful life of a UC-owned equipment item. Also known as components.

Adding purchased sub-system products to the operating system. Purchased sub-system products are also know as SUBSYS products. Modifications to already installed SUBSYS products is called an Update.

In charge accounts, the purchasing of additional merchandise without paying in full for previous purchases.

A related product offer sometimes included in the original promotion, otherwise as a follow-up communication. (Example: accessory items such as head sets or remote control devices for use with applicable audio equipment)

A transaction to add related equipment to an existing lease. Typically, this term is used when the new equipment is financed using the same lease structure (i.e., Fair Market Value, $1.00 Purchase Option, Fixed Purchase Option, etc.) as was used in the underlying transaction except that the lease term for the add-on is set so that it expires coterminously with (on the same date as) the original transaction.

For Pay Monthly Customers means: an additional credit which may be purchased for specific supplemental services (as detailed in the Price Guide and other customer documentation). For ThreePay Customers means: a voucher or any other payment mechanism or receipt used to purchased specific 3 Services and which requires an Active ThreePay Voucher on your account for use (as detailed in the Price Guide and other customer documentation).

An extra item that is sold with a purchase. This may be an accessory line, e.g. a paintbrush with paint, or an unrelated line, that is, a line not related to the purchase. These are usually promotional or new lines introduced to the customer after purchasing his or her item.

The addition of new equipment to equipment already on the lease agreement. This is achieved by way of a new lease agreement for the additional equipment.