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Acronyms and Abbreviations in Telecommunications - InterConnect ...

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<strong>Acronyms</strong> <strong>and</strong> <strong>Abbreviations</strong> <strong>in</strong> <strong>Telecommunications</strong> 139<br />

UE User Equipment<br />

UHF Ultra High Frequency<br />

UI Unnumbered Information (HDLC)<br />

UISG Utility Industry St<strong>and</strong>ards Group<br />

UITS Unacknowledged Information Transfer Service (ITU-T)<br />

UKAS United K<strong>in</strong>gdom Accreditation Service<br />

UKIUF UK ISDN User Forum<br />

UKPOA UK Pag<strong>in</strong>g Operators’ Association<br />

ULF Ultra Low Frequency<br />

ULL Unbundl<strong>in</strong>g the Local Loop<br />

ULP Upper-Layer Protocol<br />

UM Unified Messag<strong>in</strong>g<br />

Um GSM Air Interface<br />

UMB Upper Memory Block<br />

UMS Universal Messag<strong>in</strong>g System<br />

UMTS Universal Mobile <strong>Telecommunications</strong> System<br />

UN Unbalanced Normal<br />

UNI User/Network Interface<br />

UNITE User Network for Information Exchange on<br />

<strong>Telecommunications</strong> <strong>in</strong> Europe<br />

UNMA Unified Network Management Architecture<br />

UP Unnumbered Poll<br />

UPC Usage Parameter Control (ATM)<br />

UPCS Universal Personal Communications Services<br />

UPF UnPlugFests<br />

UPS Un<strong>in</strong>terruptable Power Supply

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