P
REFACE
Conventions and Acronyms
V660
P
I
NSTALLATION
G
UIDE
7
MSAM
Multiple Secure Access Module
SAM
Secure Access Module
CTLS
Contactless
DC
Direct Current
ISO
International Organization for Standardization
ECR
Electronic Cash Register
AC
Alternating Current
QR
Quick Response
ROM
Read Only Memory
AES
Advanced Encryption Standard Algorithm
DUKPT
Derived Unique Key Per Transaction Method as defined in the
VISA’s POS Equipment Requirement: PIN processing and Data
Authentication, International Version 1.0, August 1988
RF
Radio Frequency
RS-232
Serial Communication Protocol
POS
Point-of-Sale
USB
Universal Serial Bus
LAN
Local Area Network
IPS
Inches Per Second
VPN
Verifone Part Number
Table 2
Acronym Definitions
Acronym
Definitions