Interconnection World Glossary: U, A vertical unit of measurement(1.75 inches), UA, User Agent, UAC, User Agent Client

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Numbers & Misc. \| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

U	A vertical unit of measurement (1.75 inches)

UA	User Agent

UAC	User Agent Client

UADSL	Universal ADSL

UART	Universal Asychronous Reveiver/Transmitter

UAS	User Agent Server

UBR	Unspecified Bit Server

UCD	Uniform Call Distributor

UCLC	Universal Industrial Current Loop Converter

UDP	User Datagram Protocol

UHF	Ultra High Frequency

UL	Underwriter’s Laboratories

UI	Unit Interval

UIM	Usre Identity Module

UL	Uplink (Also written as U/L)

ULP	Upper-Layer Protocol

ULF	Ultra Low Frequency

UMTS	Universal Mobile Telephone System/Standard

UNE	Unbundled Element

UNI	User Network Interface

Unicast	Same as Point-to-Point communication

Unicode	Officially called the Unicode Worldwide Character Standard

Unix	Official trademark is written as UNIX

UNNI	Unlicensed National Information Infrastructure

UPN	User Provided Number

UPnP	Universal Plug and Play

UPS	Uninterruptible Power Supply

UPT	Universal Personal Telecommunications

URI	Uniform Resource Identifier

URL	Uniform Resource Locator

USB	Universal Serial Bus

USIM	Upgrade SIM Card

USOC	Uniform Service Order Code

USTA	United Stated Telephone Association

UT	Universal Time

UTC	Coordinated Universal Time

UTP	Unshielded Twisted Pair

UTRA	UMTS Terrestrial Radio Access

UUCP	UNIX-to-UNIX Copy Protocol

UUT	Unit Under Test

UVM-C	Universal Voice Module-Unchannelized

UVM-U	Universal Voice Module-Unchannelized

UWB	Ultra Wide Band

UWC	Universal Wireless Consortium

UCE-136	Universal Wireless Communications 136

UWCC	Universal Wireless Communications Consortium

UG	Symbol for coaxial connectors that are made to government specification.

Ultrasonic Bond	Process of joining materials by the scrubbing action and energy transfer of a tool vibrating at an ultrasonic frequency.

Umbilical Connector	A connector used to connect cables to a rocket or missile prior to launching, and which is removed from the missile at the time of launching.

Underwriters' Symbol	A logotype authorized for placement on a product which has been recognized by Underwriters' Laboratories, Inc.

Numbers & Misc. | A B C D E F G H I J K L M N O P Q R S T U V W X Y Z