Glossar - U
| Abkürzung | Bedeutung |
|
UA |
User Agent (ITU-T X.400) |
|
UAA |
Universally Administrated Address |
|
UAC |
User Agent Client (ITU-T X.400) |
|
UADSL |
Universal Asymmetric Digital Subscriber Line (xDSL) |
|
UAE |
Universelle Anschlusseinrichtung |
|
UAE |
User Agent Entity |
|
UAK |
User Authentication Key (IT-Sicherheit) |
|
UAL |
User Access Line (ITU-T X.25) |
|
UAL |
User Agent Layer |
|
UAN |
Universal Access Number |
|
UAPDU |
User Agent Protocol Data Unit |
|
UART |
Universal Asynchronous Receiver and Transmitter |
|
UAS |
Unavailable Second |
|
UAS |
User Agent Server (ITU-T X.400) |
|
UAT |
Unavailable Time |
|
UAWG |
Universal ADSL Working Group (xDSL) (Gremien, Organisationen) |
|
UBIDEP |
Universal Building Information and Data Exchange Protocol (Protokolle) |
|
üBKVrSt |
Übergeordnete BK-Verstärkerstelle |
|
UBL |
Unblocked |
|
UBR |
Unspecified Bit Rate --> Nicht festgelegte Bitrate (ATM, B-ISDN) |
|
UC |
Upstream Channel |
|
UC |
User Class |
|
UCC |
User Communication Channel |
|
UCS |
Universal Cabling System (Verkabelung) |
|
UCS |
Unified Communication Service |
|
UCS |
Universal Card Slot |
|
UDB |
User Data Block |
|
UDI |
Universal Digital Interface |
|
UDLR |
Unidirectional Link Routing |
|
UDP |
User Datagram Protocol --> Verbindungsloses Transportprotokoll im Internet (RFC 768, 793) |
|
UDSL |
Unidirectional Digital Subscriber Line (xDSL) |
|
UDT |
Unchannelized Data Transfer |
|
UE |
User Equipment --> Teilnehmer-Endgerät (UMTS) |
|
UE |
User Element |
|
UFS |
Unix File System |
|
UG |
Universal Gateway |
|
UGV |
Universelle Gebäudeverkabelung (Verkabelung) |
|
UHF |
Ultra High Frequency |
|
UHTTP |
Unidirectional Hypertext Transfer Protocol --> Anwendungsprotololl im Internet |
|
UI |
User Interface |
|
UI |
Unnumbered Information |
|
UIC |
User Identification Code |
|
UID |
Unique Identifier |
|
UIFN |
Universal International Freephone Number (Service) |
|
UIM |
User Identity Module |
|
UIM |
User Information Message |
|
UKO-Schnittstelle |
Leitungsschnittstelle des ISDN-Basisanschlusses für Kupferleiter; deutscher Schnittstellenstandard auf der Teilnehmeranschlußleitung |
|
UKW |
Ultrakurzwelle |
|
UL |
Uplink |
|
ULA |
Upper Layer Architecture |
|
ULH |
Ultra Long Haul |
|
ULL |
Unbundled Local Loop |
|
ULP |
Upper Layer Protocol |
|
UM |
Unified Messaging |
|
UMD |
Uniform Mode Distribution |
|
UME |
UNI Management Entity |
|
UMI |
User MAN Interface |
|
UML |
Unified Message Language |
|
UMS |
Unified Messaging Service |
|
UMTS |
Universal Mobile Telecommunications System |
|
ÜN |
Übertragungsnetz |
|
UNA |
Upstream Neighbour´s Address (Token-Verfahren) |
|
UNI |
User Network Interface --> Schnittstelle zw. Netzknoten und Teilnehmer (ATM) |
|
UNIX |
Multitasking- und Multiuser-Betriebssystem |
|
UNMA |
Unified Network Management Architecture (AT&T) |
|
UNT |
Update Notification Table |
|
UP |
User Part |
|
ÜP |
Übergabepunkt |
|
UPAM |
User Primary Access Method |
|
UPC |
Usage Parameter Control (ATM) |
|
UPI |
User Protocol Interpreter |
|
UPM |
User Profile Management |
|
Upn |
Anlagen-Systemschnittstelle (Firmenbezeichnung) |
|
UPN |
Universal Personal Number |
|
UPSR |
Unidirectional Path Switching Ring |
|
UPT |
Universal Personal Telecommunications |
|
UR2 |
Schnittstelle bei T-DSL |
|
URG |
Urgent (Flag, Datenfeld) |
|
URI |
Uniform Resource Identifier (WWW) |
|
URL |
Uniform Resource Locator (WWW) |
|
URN |
Uniform Resource Name (WWW) |
|
URT |
User Response Time |
|
USART |
Universal Synchronous/Asynchronous Receiver/Transmitter |
|
USAT |
Ultra Small Aperture Terminal (Sat-Kommunikation) |
|
USB |
Universal Serial Bus --> Hochratige, serielle Schnittstelle |
|
USBS |
User Signalling Bearer Service |
|
USDC |
US Digital Cellular |
|
ÜSFu |
Übersee-Sendefunkstelle |
|
USI |
User Specific Interface |
|
USIM |
Universal Subscriber Indentity Module |
|
USO |
Universal service Obligation |
|
USOC |
Universal Service Ordering Code |
|
USSD |
Unstructured Supplementary Service Data |
|
USV |
Unterbrechungsfreie Stromversorgung |
|
UT |
Upper Tester |
|
UT |
Universal Time |
|
UTC |
Universal Time Coordinated --> Weltzeit |
|
UTC |
Universeller Teletex Controller |
|
UTF |
Universal Transformation Format |
|
UTM |
Universal Transaction Monitor |
|
UTOPIA |
Universal Test and Operation PHY-interface for ATM |
|
UTP |
Unshielded Twisted Pair --> Verdrillte Kupferdoppelader ohne Abschirmung (Verkabelung) |
|
UTRA |
UMTS Terrestrial Radio Access (UMTS) |
|
UTRAN |
UMTS Terrestrial Radio Access Network (UMTS) |
|
UUCICO |
Unix-to-Unix Copy-in-Copy-out |
|
UUCP |
UNIX-to-UNIX Communication Protocol --> Asynchrones Standardprotokoll in UNIX-Umgebung |
|
UUI |
Uder-to-User Information |
|
UUNET |
Unix-to-Unix Network --> Weltweites, IP-basiertes Kommunikationsnetz für geschäftliche Kunden |
|
UUS |
User-to-User Signalling |
|
UUT |
Unit Under Test |
|
UV |
Ultraviolet |
|
UWC |
Universal Wireless Consortium (GSM) |
|
UWCC |
Universal Wireless Communications Consortium (Gremien, Organisationen) |
|
UWDM |
Ultra-dense Wavelength Division Multiplex --> Wellenlängenmultiplex-Verfahren mit sehr engen Wellenlängenabständen |