\\ More than 3500 Telecom abbreviations maintained by Ioan (Nini) Indreias //
1 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
All words

UAUnbalanced Asynchronous (HDLC)
UAUnnumbered Acknowledgement (HDLC)
UAUser Agent
UANUser Access Node
UARFCNUTRA Absolute Radio Channel Frequency Number (GSM - UMTS)
UARTUniversal Asynchronous Receiver Transmitter
UASUnavailable Seconds
UBRUnspecified Bit Rate (ATM)
UCAUtility Communications Architecture
UCANUtility Consumers Action Network
UCDUniform Call Distribution
UCDUser Centered Design
UCICUnequipped Circuit Identification Code
UCSUniversal Communications Standards
UDCUniversal Digital Channel
UDIUnrestricted Digital Information (ISDN)
UDLCUnivac Data Link Control
UDLCUniversal Digital Loop Carrier
UDPUser Datagram Protocol
UDPUser Datagram Protocol (IETF)
UDTUnitdata
UDTSUnitdata Service
UEUser Equipment (GSM - UMTS)
UELUniversal Event Loader
UHFUltra High Frequency
UIUnit Interval
UIUnnumbered Information (HDLC)
UIUser Interface
UIDUnit Identification
UISGUtility Industry Standards Group
ULTRIXDEC's version of UNIX
ULTSUniversal Lifeline Telephone Service
UMUnified Messaging
UMBUpper Memory Block
UMTSUniversal Mobile Telecommunications System
UMTSUniversal Mobile Telecommunications System (GSM - UMTS)
UNUnbalanced Normal
UNCUniversal Naming Convention
UNIUser Network Interface
UNIUser-Network Interface (ATM, FR)
UNICODEUNIversal trunk-out-of-service Code
UNMAUnified Network Management Architecture
UPUnumbered Poll
UPAUser Part Available
UPCUsage Parameter Control
UPNUniversal Personal Number
UPSUninterruptible Power System/Supply
UPSUnited Parcel Service
UPTUniversal Personal Telecommunications
UPTUser Part Test
UPUUser Part Unavailable
URIUniversal Resource Identifier
URJUnregistration Reject (RAS)
URLUniform Resource Locator
URLUniform/Universal Resource Locator
URNUniform Resource Name
URQUnregistration Request (RAS)
USAAUnited Services Automobile Association
USARTUniversal Synchronous Asynchronous Receiver Transmitter
USATUltra Small Aperture Terminal
USBUniversal Serial Bus
USIUser System Interface
USIMUMTS SIM (UMTS)
USIMUniversal Subscriber Identity Module (3G)
USOUniversal Service Obligation
USOUniversal Service Order
USOCUniversal Service Offering/Order Code
USOCUniversal Service Order(ing) Code
USPUsage Sensitive Pricing
USRUser-to-User Information (SS7)
USSUnstructured Suplementary Services (SS)
USSDUnstructured Supplementary Service Data (GSM - UMTS)
USTAUnited States Telecommunications Association
USTKUMTS STK (UMTS)
USUUSSD Service Utility
UTAMUnlicensed PCS Ad Hoc Committee for 2-GHz Microwave
UTCCoordinated Universal Time
UTCUnable to Comply Ack (EOC)
UTCUnacknowledged (Unnumbered) Information Transfer Control
UTMUniversal Transaction Monitor
UTMUniversal Transverse Mercator
UTPUnshielded Twisted Pair
UTPUnshielded Twisted Pair (Physical Layer)
UTRAUniversal Terrestrial Radio Access
UTRANUniversal Terrestrial Radio Access Network
UTSUnbundled Tandem Switching
UUCPUNIX-UNIX Copy
UUSUser-to-User Signaling
UVGUniversal Voice-grade Channel Unit
UWBUltra Wide Band
SMBZ - SaMBoZaur - test for propagation of define: