Glossary
UICC
Universal Integrated Chip Card.
UIM
User Identity Module. (also R-UIM for "removable" UIM) An identity module for standards other than GSM (notably for CDMA). See also SIM.
UML
Unified Modeling Language. A language used for modeling object-oriented systems. UML is particularly well suited for projects in C++ and Java.
UMTS
Universal Mobile Telecommunications System. A third-generation (3G) system to offer broadband communication over mobile communications networks.
Unicode
A method for encoding characters from many alphabets in 2 bytes or 16 bits. For example, 03BE16 is the lowercase Greek letter epsilon (É√). See also ASCII.
UNIX
Became the de-facto standard operating system for mini computers. The objective was portability of applications. Several variants exist.
URI
Uniform Resource Identifier
URL
Uniform Resource Locator. Website address
USB
Universal Serial Bus. "Plug and play " communication protocol offering flow rates of 1.2 and 12 Mbit/s developed by Intel, and now used in some smart cards instead of the communication protocol defined by ISO 7816-3, for access control applications in the PC world.
USIM
Universal Subscriber Identity Module.
USIM card
Universal Subscriber Identity Module. Upgrade of the Sim card performing functions related to third generation telephone systems (3G) : user and network authentication, transaction security , use of an Internet mini-navigator, highly-sophisticated phone directory, etc.
USSD
Unstructured Supplementary Service Data.
UTI
Unit Trust of India (mutual fund)
UV Printing
Printing with ink visible only under ultraviolet light.
UWB
Ultra-Wideband (Time Domain Corporation; wireless technology)