Connecting to PaymentTrust's Secure Transaction Network - WorldPay

Fraudulent Transaction
A transaction unauthorized by the cardholder of a bank card. Such transactions are categorized
as lost, stolen, not received, issued on a fraudulent application, counterfeit, fraudulent processing
of transactions, account takeover, or other fraudulent conditions as defined by the card company
or the member company.
H
HTTP Protocol
Hardware and/or software that connects computer networks and allows them to communicate.
I
ICC (Integrated Circuit Card)
See chip card.
Independent Sales Organization
Visa term for a company that is sponsored by an acquiring bank to solicit and sometimes support
merchants.
Interchange
The flow of information between issuers and acquirers (e.g. transactions, retrieval requests,
chargebacks).
Interchange Fee
The fee charged by Visa and MasterCard for each credit card transaction. This fee is part of the
discount rate.
Internet Merchant Bank Account
A special account required for merchants who wish to sell goods and services over the Internet
and accept credit cards as payment. This type of account is different than a typical merchant
account and is considered similar to a card-not-present transaction.
Internet Service Provider
A company that offers access to individuals or companies to connect to the Internet.
ISO
See Independent Sales Organization.
ISP
See Internet Service Provider.
Issuer
An institution that issues plastic cards to cardholders.
Issuing Bank
See Issuer.
M
Magnetic Ink Character Recognition (MICR)
The process used to read the string of numbers on the bottom of a check. The MICR characters
(0-9 and 4 special characters) are printed in special toner or ink. When the check is passed
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