U-RRM

User Radio Resource Management (ict/net/mobile)

UA

User Agent (org/itu/x400)

UBR

Unspecified Bit Rate (ict/net)

UCC

University College Cork (edu/ie)

UCD

University College Dublin (edu/ie)

UCIF

Unified Communications Interoperability Forum (org)

UCS

Universal (multiple-octet coded) Character Set (ict/unicode)

UDDI

Universal Description, Discovery, and Integration (ict/lang)

UDP

User Datagram Protocol (org/ietf/ip)

UE

User Equipment (org/3gpp)

UEPS

Universal Executable Policy Specification (com/se/ericsson/nm-lab/upt)

UF

Utility Function (ict/concept)

UHD

Ultra-High Definition (ict/graphic)

UIC

International Union of Railways (org)

UISF

User Interface Support Function (org/itu/m3000)

UK Sim

UK Society for Modelling and Simulation (org)

UL

University of Limerick (edu/ie)

UME

UNI Management Entity (org/itu/atm)

UML

Unified Modeling Language (org/omg)

UMTS

Universal Mobile Telecommunications System (org/3gpp/3g)

UMTS Forum

Universal Mobile Telecommunications System Forum (org)

UNI

User Network Interface (org/itu/atm)

UP

User Plane (ict/net)

UPC

Usage Parameter Control (org/itu/atm)

UPe

Universal Policy Enginge (com/se/ericsson/nm-lab/upt)

UPec

Universal Policy Engine Cluster (com/se/ericsson/nm-lab/upt)

UPEE

Universal Policy Execution Environment (com/se/ericsson/nm-lab/upt)

UPM

Universal Policy Model (com/se/ericsson/nm-lab/upt)

UPN

User Principal Name (com/us/microsoft/ad)

UPNP

Universal Plug and Play (ict/comp)

UPnP Forum

Universal Plug and Play Forum (org)

UPS

Uninterruptible Power Supply (ict/comp)

UPT

Unifying Policy Theory (com/se/ericsson/nm-lab)

UPx

Universal Policy Executor (com/se/ericsson/nm-lab/upt)

URI

Uniform Resource Identifier (org/ietf/www)

URL

Uniform Resource Locator (org/ietf/www)

URN

Uniform Resource Name (org/ietf/www)

US

Unit Separator (org/ansi/ascii)

USB

Universal Serial Bus (ict/comp)

USB IF

USB Implementers Forum (org)

USEC

USer SEcurity (org/ietf/snmp)

USM

User-based Security Model (org/ietf/snmp)

USN

Update Sequence Number (com/us/microsoft/ad)

USR

U.S. Robotics (com/us)

UT

Universal Time (time)

UTC

Coordinated Universal Time (time)

UTF

UCS Transformation Format (ict/unicode)

UTF-16

UCS Transformation Format - 16 bit (ict/unicode)

UTF-8

UCS Transformation Format - 8 bit (ict/unicode)

UTOPIA

Universal Test & Operations Physical layer Interface for ATM (org/itu/atm)

UUCP

Unix to Unix Copy Protocol (ict/os/unix/commands)

UUID

Universally Unified Identifier (ict)