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GLOSSAR

Abkürzungen

  
A/DAnalog-Digital-Umsetzung
AAL1ATM Adaptation Layer Type 1
AALATM Adaptation Layer
ABRAvailable Bit Rate
ACAlternating current
ACKAcknowledgement
ACOAlarm Cut-Off
ACRAvailable Cell Rate
ADoAnschlußdose
ADPCMAdaptive Differential Pulse Code Modulation
ADSLAsymmetric Digital Subscriber Line
AFuGAmateurfunkgesetz
AHFGATM-attached Host Functional Group
AIIActive Input Interface (Used in UNI PMD specs for Copper/Fiber)
AIMATM Inverse Multiplexer
AISAlarm Indication Signal (UNI Fault Management)
AMAmplitudenmodulation (Modems)
AMIAlternate Mark Inversion
AMPSAdvanced Mobile Phone System
AMSAutomatischer Mehrfachschalter
ANISAnaloger Anschluß an ISDN-Vermittlungsstelle
ANSATM Name Service
ANSIAmerican National Standards Institute
ANSIAmerican National Standards Institute
AOC-D/-EAdvice of Ccharge
AOIActive Output Interface (Used in UNI PMD specs for Copper/Fiber)
APAufputz
APIApplication Program Interface (Software-Schnittstelle)
APIApplications Programming Interface
ARPAddress Resolution Protocol
ARPANETAdvanced Research Projects Agency Network
ASAnrufsucher
ASCIIAmerican Standard Code for Information Interchange
ASCIIAmerican Standard for Information Interchange
ASLAnschlußleitung
ASN.1Abstract Syntax Notation One
ASNAbstract Syntax Notation One
ATAttention (Zeilenanfang von Modembefehlen)
ATBAmtliches Telefonbuch
ATEATM Terminating Equipment (SONET)
ATMAsynchronous Transfer Mode (Netzwerkprotokoll)
ATMARPATM Address Resolution Protocol
ATMFATM Forum
ATU-CADSL Tranceiver Unit - Central Office, ADSL Übertragungseinheit
ATU-RADSL Transceiver Unit - Remote (ADSL-Modem beim Kunden)
AUIAttachment Unit Interface (externer Netzwerk-Adapter)
AUIAttachment Unit Interface
AVONAmtliches Verzeichnis der Ortsnetzkennzahlen
AVSSCSAudio-Visual Service Specific Convergence Sublayer (ATM Forum)
AWADoAutomatische-Wechselschalter-Anschluß-Dose
AWGAmerican Wire Gauge

  
B-HLIBroadband High Layer Information
B-ICIBroadband Inter-Carrier Interface
B-ISDNBroadband Integrated Services Digital Network
B-ISSIBroadband Inter-Switching System Interface
B-ISUPBroadband Integrated Services User Part
B-LLIBroadband Low Layer Information
B2Mobilfunknetz der Telekom
B8ZSBipolar 8 Zero Substitution
BBearer (64Kbps DS-0 Channel)
BAPTBundesamt für Post und Telekommunikation
BBzBaubezirk
BDBattery On Discharge
BECNBackwards Explicit Congestion Notification
BERBasic Encoding Rules (ASN.1)
BERBit Error Rate, Bitfehlerhäufigkeit
BGPBorder Gateway Protocol
BIPBit Interleaved Parity
BIPVBit Interleaved Parity Violation
BISBorder Intermediate System (ATM Forum, PNNI SWG)
BitKleinste Informationseinheit, Wert = 0/1 bzw. Nein/Ja
BITSBuilding Integrated Timing Supply
BKBreitbandkommunikation (u.a. Kabelfernsehen)
BOCBell Operating Company (or RBOC)
BOMBegining of Message
BOOTPBootstrap Protocol
BPDUBridge Protocol Data Unit
bpsBits per second, Bit/s
bpsbits per second
BRASBroadband Remote Access Server
BRIBasic Rate Interface
BSCBase Station Controller
BSPBell System Practice
BSSBroadband Switching System
BTBurst Tolerance
BtxBildschirmtext
BuBuchungsstelle
BUSBroadcast Unknown Server
ByteGruppe von 8 Bits, kann 1 Zeichen darstellen
BZTBundesamt für Zulassungen in der Telekomunikation

  
CMobilfunknetz der Telekom
CACConnection Admission Control
CAD/CAMComputer Aided Design/Computer Aided Manufacturing
CAPCustomer Administration Panel
CAPCarrierless Amplitude and Phase Modulation
CAPICommon Application Program Interface (ISDN)
CATVCommunity Antenna TeleVision or CAble TeleVision
CBRConstant Bit Rate
CCBSCompletion of Calls to Busy Subscriber
CCEICentre de communication et d'Essais International
CCIFComité consultatif international des télécommunications grandes distance (Zwischenstaatlicher beratender Ausschuß für den Fernsprechverkehr)
CCIRComité consultatif international des radiocommunications (Zwischenstaatlicher Ausschuß für den Funkdienst)
CCITT Comité consultatif international télégraphique et téléfonique (jetzt ITU-T)
CCSCommon Channel Signaling
CCSS7Common Channel Signaling System 7
CDMACode Division Multiple Access
CDOCommunity Dial Office or Codial Office
CDVCell Delay Variation
CDVTCell Delay Variation Tolerance
CECCommon Equipment Card
CEIConnection Endpoint Identifier (UNI 3.0)
CEMFCounter EMF Cells
CEPT Konferenz der europäischen Post- und Fernmeldeverwaltungen
CERCell Error Ratio
CESCircuit Emulation Service
CHAPChallenge Handshake Authentication Protocol
CICongestion Indicator
CIPClassical IP over ATM
CIRCommitted Information Rate
CIXCommercial Internet Exchange
CLIPCalling Line Identification Presentation (Rufnummernanzeige)
CLIPClassical IP
CLPCell Loss Priority
CLRCell Loss Ratio
CLSConnectionless Service
CMIPCommon Management Information Protocol
CMISCommon Management Information Service
CMISECommon Management Information Service Element
CMYKCyan-Magenta-Yellow-Black
CNRComplex Node Representation (ATM Forum, PNNI SWG)
COCentral Office
COConnection-Oriented
CodecCoder/Decoder
COMCommunication port (serielle Schnittstelle)
CPCSCommon Part Convergence Sublayer
CPECustomer Premise Equipment
CPICommon Part Indicator
CRCCyclic Redundancy Check (Prüfsummenverfahren)
CRCCyclic Redundancy Check
CRF(VC)Virtual Channel Connection Related Function
CRF(VP)Virtual Path Connection Related Function
CRFCell Relay Function
CRSCell Relay Service
CSConvergence Sublayer
CSMA/CDCarrier Sense Multiple Access with Collision Detection
CSMACarrier Sense Multiple Access (Netz-Kollisionserkennung)
CSMACarrier Sense Multiple Access
CSUChannel Service Unit
CTCordless Telephone (Schnurlostelefon, Standards CT1, CT1+, CT2)
CTDCell Transfer Delay
CTIComputer Telephony Integration (Telefonie-Anwendungen)
CVSDContinuously Variable Slope Delta modulation

  
DÜEDatenübertragungseinrichtung (Modem)
D-AMPSDigital-Advanced Mobile Phone Service
D/ADigital to analog conversion
D/ADigital-Analog-Umsetzung
D1GSM-Mobilfunknetz der Telekom
D2GSM-Mobilfunknetz von Mannesmann Mobilfunk
DDelta (Q3B+D)
DADoppelader
DACDual Attached Concentrator
DARPADefense Advanced Research Projects Agency
DASDual Attached Station
DATDigital Audio Tape
Datex-JDatex Jedermann (=Btx)
Datex-LDatex mit Leitungsvermittlung
Datex-MDatex MAN
Datex-P Datex mit Paketvermittlung
DatexData exchange
dBDecibel
dBrnCWeighted Electrical Noise
DCDirect Current
DCCData Country Code
DCS-1800Digital Communications System
DEDiscard Eligibility
DECTDigital European Cordless Telecommunications
DECTDigital European Cordless Telephone
DEEDatenendeinrichtung (Computer, Terminal)
DESDestination End System
DFÜDatenfernübertragung
DFADistribution Fuse Alarm
DFSDeutscher Fernmeldesatellit (Kopernikus)
DHCPDynamic Host Configuration Protocol (für dynam. IP-Adr.)
DHCPDynamic Host Configuration Protocol
DIPDual In-Line Package Switch
DIVDigitale Vermittlungstechnik
DIVA DIV Auslandsebene
DIVFDIV Fernebene
DIVODIV Ortsebene
DLCData Link Control
DLCIData Link Connection Identifier
DLLDynamic Link Library, Windows-Bibliotheksdatei
DMADirect Memory Access
DMSDigital Multiplex System
DNIDData Network IDentification number
DNSDomain Name Service
DNSDomain Name System (Namensvergabe in IP-Netzwerken)
DOSDisk Operating System (MS-DOS, PC-DOS)
DPLDigital Power Line (1 MBit/s auf 230-V-Leitungen)
DQDBDistributed Queue Dual Bus
DS-0Digital Signal (Level 0)
DS-1Digital Signal (Level 1)
DS-3Digital Signal (Level 3)
DSAPDestination Service Access Point
DSLDigital Subscriber Line
DSLAMDigital Subscriber Line Access Multiplexer
DSRData Set Ready
DSS1Protokoll von Euro-ISDN
DSSDigital Subscriber Service (DSS1=Euro-ISDN)
DSSSDirect Sequence Spread Spectrum (bei Funk-LANs)
DStDienststelle
DSUData Service Unit
DSXDigital Service Cross-Connect
DTDirektion Telekom
DTEData Terminal Equipment
DTL IEDesignated Transit List Information Ethernet
DTLDesignated Transit List
DMTDiscrete Multi Tone, Vielträgermodulationsverfahren
DTMF Dual Tone Multi Frequency (Mehrfrequenzverfahren)
DTMFDial Tone Multiple Frequency
DSLAMDigital Subscriber Line Access Multiplexer
DVDDigital Video Disc.
DVMADirect Virtual Memory Access
DWDMDense Wavelength Division Multiplexing
DXIData Exchange Interface
DXIDigital Exchange Interface

  
E&MEarth & Magnet
E-1European (Signal Level 1)
E-3European (Signal Level 3)
E1PCN-Mobilfunknetz von E-Plus
EAZEndgeräte-Auswahlziffer (ISDN-1TR6)
ECMError Correction Mode
ECMExternal Configuration Model
ECTExplicit Call Transfer (Vermitteln bei ISDN)
EDFGEdge Device Functional Group (ATM Forum, MPOA SWG)
EDGEEnhanced Data Rates for GSM Evolution
EDIElectronic Data Interchange
EEPROMElectric Ereasable Progamable ROM (elektrisch löschbares Read-Only-Memory)
EFCIExplicit Forward Congestion Indication
EFCNExplicit Forward Congestion Notification
EGCEnhanced Group Call (Inmarsat-C)
EGPExternal (Exterior) Gateway Protocol
EISAExtended Industry Standard Architecture
ELANEmulated LAN (ATM Forum LANE)
EMD Edelmetallmotordrehwähler
EMIElectroMagnetic Interface
EMIElectromagnetic Interference
EMSElement Management System
ENIDEGC network ID (Inmarsat-C)
EOMEnd of Message
EPRCAEnhanced Proportional Rate Control Algorithm
EPROMErasable Programmable Read-Only Memory
EPROMEreasable Progamable ROM (mit UV-Licht löschbares Read-Only-Memory)
EQLEquilization
ERExplicit Rate
ERExterner Rechner (bei Datex-J)
ESErred Seconds
ESCONEnterprise Systems CONnection
ESFExtended Super Frame
ESIEnd System Identifier
ESNElectronic Serial Number
ESSElectronic Switching System
ETACSExtended Total Access Communications System
ETSIEuropean Telecommunication Standards Institute
EVZEndverzweiger
EWSElektronisches Wählsystem
EWSA Elektronisches Wählsystem analog
EWSDElektronisches Wählsystem digital
EWSM Elektronisches Wählsystem Metropolitan Area Network
EWSO Elektronisches Wählsystem Ortstechnik

  
FA Fernmeldeamt
FAFuse Alarm
FAGFernmeldeanlagengesetz
FCAPSFault, Configuration, Accounting, Performance, Security
FCCFederal Communications Commission
FCSFrame Check Sequence
FCSFrame Checksum (Rahmenprüfsumme, vgl. CRC)
FCVCFlow Controlled Virtual Circuit
FDFrame Discard
FDDIFiber Distributed Data Interface (Glasfasernetz)
FDDIFiber Distributed Data Interface
FDMFrequency Division Multiplex
FDMAFrequency Division Multiple Access (Mehrkanalbetrieb)
FEAFunctional Entity Action (UNI 3.0, C.3.2.3)
FeAp Fernmeldeapparat
FEBEFar End Block Error (SONET)
FECForward Error Correction
FECNForward Explicit Congestion Notification
FeTApFernsprechtischapparat
FeWAp Fensprechwandapparat
FEXTFar End Crosstalk - Übersprechen am fernen Ende
FGFunctional Group (ATM Forum, MPOA SWG)
FGDFrame Ground
FHSSFrequency Hopping Spread Spectrum (bei Funk-LANs)
FIFOFirst-In, First-Out buffer (z.B. bei COM-Ports)
FIFOFirst-In, First-Out
FMFrequenzmodulation
FOFiber Optics
FQFair Queuing
FR-SSCSFrame Relay Service Specific Convergence Sublayer
FRFrame Relay
FSKFrequency Shift Keying (Modems)
FTPFile Transfer Protocol
FTPFile Transfer Protocol
FTZFernmeldetechnisches Zentralamt
FUDFear Uncertainty Doubt
FUNIFrame based User-to-Network Interface (ATM Forum)

  
GAbkürzung für "Giga", 1 Milliarde, z.B. 1 GHz = 1000 MHz
GANGlobal Area Network
GAPGeneric Access Profile
GBGigaByte
GbAnzGebührenanzeiger
GBIGebührenimpuls
GbpsGigabit per second
GCRAGeneric Cell Rate Algorithm
GDT Generaldirektion Telekom
GFCGeneric Flow Control
GKS Geschäftskunden-Service
GMSKGaussian Minimum Shift Keying (GSM-Modulation)
GMTGreenwich Mean Time (Weltzeit, wie UT)
GOSIPGovernment OSI Protocol
GPRSGeneral Packet Radio Service (in GSM-/UMTS-Netzen)
GPRSGeneral Packet Radio Service for GSM networks
GPSGlobal Positioning System (Satelliten-Navigationsdienst)
GSMGlobal System for Mobile Communication
GSMGlobal System for Mobile communications
GSMGroup Special Mobile
GSMGroupe Speciale Mobile
GUIGraphical User Interface
GWGruppenwähler

  
HBFGHost Behavior Functional Group (ATM Forum, MPOA SWG)
HDLCHigh speed Data Link Control
HDLCHigh-Performance Data Link Control
HDSLHigh Bitrate Digital Subscriber Line
HDTVHigh Definition Television
HDWHebdrehwähler
HECHeader Error Check
HECHeader Error Control
HEXHexadezimal, Zahlensystem mit Basis=16; Ziffern 0-9 und A-F
HFHigh Frequency
HLSHue-Lightness-Saturation
HPPIHigh Performance Parallel Interface
HSCSDHigh Speed Circuit Switched Data
HSCSDHigh-Speed Circuit Switched Data (in GSM-Netzen)
HSSIHigh Speed Serial Interface
HTMLHyper-Text Markup Language
HTMLHypertext Markup Language
HTTPHyper Text Transfer Protocol
HTTPHypertext Transfer Protocol
HVHigh Voltage
HVStWHauptvermittlungsstellenwähler
HVtHauptverteiler
HzHertz, Schwingungen pro Sekunde

  
I&RInstallation And Repair
I-PNNIIntegrated PNNI
I/OInput/Output
IABInternet Activities Board
IAEISDN-Anschluß-Einheit
IANAInternet Assigned Numbers Authority
IASGInternetwork Address Sub-Group (ATM Forum, MPOA SWG)
IBSGInternetwork Broadcast Sub-Group (ATM Forum, MPOA SWG)
IBUFGInternetwork Broadcast/Unknown Functional Group (ATM Forum, MPOA SWG)
ICIntegrated Circuit
ICFGIASG Coordinating Function Group (ATM Forum, MPOA SWG)
ICIInter-Carrier Interface
ICMPInternet Control Message Protocol
ICTImplicit Call Transfer (ISDN-Vermitteln durch Halten/Auflegen)
IDNIntegrated Digital Network
IDPInitial Domain Part
IDPSInmarsat Data Packet Service
IDRPInter-Domain Routing Protocol
IDSLISDN Digital Subscriber Line
IDUInterface Data Unit (UNI 3.0)
IEInformation Element
IECInter-Exchange Carrier
IEEInstitution of Electrical Engineers
IEEEInstitute of Electrical and Electronic Engineers
IESGInternet Engineering Steering Group
IETFInternet Engineering Task Force
IGMPInternet Group Management Protocol
IGPInternal (Interior) Gateway Protocol
IGRPInternal (Interior) Gateway Routing Protocol
IISPInterim Inter-Switch Signaling Protocal (P-NNI Phase 0)
ILMIInterim Local Management Interface
IMT-2000International Mobile Telecommunications-2000
INIntelligent Net (z.B. Service 130 etc.)
INIntelligent Network
IPInternet Protocol
IPIIntelligent Peripheral Interface
IPX/SPXInternet Packet Exchange/Sequenced Packed Exchange
IRInfra-Red Controller
IS-ISIntermediate System-to-Intermediate System
ISDNIntegrated Services Digital Network
ISOInternational Standards Organization
ISOCInternet Society
ISPInternet Service Provider
ISSIInter-Switching System Interface
ITU-TInternational Telecommunications Union Telecommunication Standardization Sector
ITU International Telecommunication Union
IWFInter-Working Function
IWVImpulswählverfahren
IXCInter eXchange Carrier

  
JPEGJoint Pictures Experts Group

  
kAbkürzung für die Zahl 1000, z.B. 1 kHz = 1000 Hz
KAbkürzung für die Zahl 210 = 1024, z.B. 1 KBit = 1024 Bit
KHzKilohertz
KVAKilovoltampere
KVStKnotenvermittlungsstelle
KVStWKnotenvermittlungsstellenwähler
KVZKabelverzweiger
KWKilowatt
KWhKilowattstunden

  
LANLocal Area Network (lokales Netzwerk)
LANELAN Emulation (ATM Forum)
LAP-BLink Access Protocol-Balanced
LAPLink Access Protocol (Übertragungsprotokoll)
LAPBLink Access Protocol B-Channel
LAPDLink Access Protocol D-Channel
LATALocal Access Transport Area
LBLLawrence Berkeley Labs
LBOLine Build Out
LCDLiquid Crystal Display
LCDLoss of Cell Delineation
LCTLast Compliance Time (used in GCRA definition)
LELink Encapsulation
LECLAN Emulation Client or Local Exchange Carrier
LECLocal Exchange Carrier
LECSLAN Emulation Configuration Server
LEDLight Emitting Diode
LENNILAN Emulation NNI
LESLAN Emulation Server
LESLand Earth Station (Satelliten-Erdfunkstelle)
LGNLogical Group Node (ATM Forum, PNNI)
LIFOLast-in, First-Out
LISLogical IP Subnet
LLC/SNAPLogical Link Control/Subnetwork Access Protocol
LLCLogical Link Control
LOFLoss of Frame
LOPLoss of Pointer
LOSLoss of Signal
LPCLinear Predictive Coding (GSM-Sprachkompression)
LPTLine PrinTer port (Parallel-Port für Druckeranschluß)
LRFLittle Rubber Feet
LRULast recently used (Cache-Strategie)
LSBLeast Significant Bit
LTELine Terminating Equipment
LUNILAN Emulation UNI
LVLow Voltage
LWLeitungswähler

  
MAbkürzung für 1 Million, manchmal auch 220 = 1.048.576
MACMedia Access Control (Netzwerk-Schnittstelle)
MANMetropolitan Area Network (Stadtnetz)
MARSMulticast Address Resolution Server (Draft IETF-IPATM-IPMC-04)
MAUMedium Attachment Unit (IEEE 802.3)
MAUMultistation Access Unit (IEEE 802.5)
MBONEMulti-Media Backbone
MbpsMegabits (millions of bits) per second
MBSMaximum Burst Size
MCCMaintenance Control Center
MCRMinimum Cell Rate
MCSMulticast Server
MDFMain Distribution Frame
MESMobile Earth Station (mobile Satelliten-Anlage)
MExEMobile Station Application Execution Environment
MFV Mehrfrequenzcode-Wählverfahren
MHCModified Huffman Code
MIBManagement Information Base
MIDMessage IDentifier
MIMEMultipurpose Internet Mail Extensions
MJPEGMotion JPEG
MMMulti-Mode
MMFMultiMode Fiber
MMRModified Modified Read
MNPMicrocom Networking Protocol
MPCMPOA Client
MPEGMotion Picture Experts Group
MPLSMulti-Protocol Label Switching
MPOAMultiProtocol Over ATM
MPSMPOA Server
MRCModified Read Code
MSAMetropolitan Statistical Area
MSBMost Significant Bit
MSCMobile Switching Center
MSNMultiple Subscriber Number (ISDN-Rufnummer)
MTBFMean Time Between Failure
MTBOMean Time Between Outages
MTSOMobile Telephone Switching Office
MTSRMean Time To Service Restoral
MTTRMean Time To Repair
MTUMaximum Transfer Unit

  
NAMNumber Assignment Module
NAUNetwork Access Unit
NAUNNearest Available Upstream Neighbor
NBMANon-Broadcast Multiple Access
NCNormally Closed
NCCNetwork Control Center
NDISNetwork Device Interface Specification
NENetwork Element
NEBSNetwork Equipment Building Spec
NEMANational Electrical Manufacturers Association
NetBEUINetBIOS Extended User Interface
NetBIOSNetwork Basic Input/Output System
NEXTNear End Crosstalk - Übersprechen am nahen Ende
NHRPNext Hop Resolution Protocol
NHSNext Hop Server
NICNetwork Information Center (vergibt Internet-Domains)
NICNAMENetwork Information Center Name Service
NIUNetwork Interface Unit
NIWFNetwork Interworking Function
NLPIDNetwork Layer Protocol ID
NMNetwork Management
NMCCNetwork Management Control Center
NMENetwork Management Entity
NMLNetwork Management Layer
NMSNetwork Management Station
NMTNordic Mobile Telephone
NMVTNetwork Management Vector Transport
NNINetwork-to-Network Interface
NONormally Open
NRZNon-Return to Zero
NRZINon-Return to Zero Inverted
NSAPNetwork Layer Service Access Point
NSFNational Science Foundation Network
NStNebenstelle
NStAnlNebenstellenanlage
NT Network Termination (ISDN)
NTNetwork Termination (ISDN-Hausanschluß)
NTANetwork Termination Analog; siehe PPA
NTBA Network Termination Basis Anschaltung
NTSCNational Television Standards Committee

  
OAMOperations, Administration, and Maintenance
OBEXObject Exchange
OC-nOptical Carrier-n
OCAOver Current Alarm
OCCOther Common Carriers
OCDOut-of-Cell Delineation (UNI 3.0 Section 2.1.2.2.2)
ODIOpen Data Link Interface
OEMOriginal Equipment Manufacturer
ONOrtsnetz
ONAOpen Network Architecture
ONKZOrtsnetzkennzahl
OOFOut of Frame
OOSOut of Service
OPALOptische Anschlußleitung
OSOperating System
OSIOpen Standards Interface (ISO-Schichtenmodell)
OSIOpen Systems Interconnect
OSPOutside Plant
OSPFOpen Shortest Path First
OUIOrganizationally Unique Identifier (RFC 1483)
P-NNIPrivate Network-to-Network Interface or Private Network Node Interface
PABXPrivate Automatic Branch Exchange (Nebenstellenanlage)
PADPacket Assembly/Disassembly (Datex-P)
PALPhase Alternating Line
PAPPassword Authentication Protocol
PBXPrivate Branch Exchange
PCPriority Control
PCBPrinted Circuit Board
PCMPulse Code Modulation (ISDN-Sprachcodierung)
PCNPersonal Communications Network
PCRPeak Cell Rate
PCSPersonal Communications Service
PDPropagation Delay
PDCPersonal Digital Cellular
PDHPlesiochronous Digital Hierarchy
PDSCPower Distribution Servicing Cabinet
PDUPacket Data Unit
PDUProtocol Data Unit
PGLPeer Group Leader (ATM Forum, PNNI)
PIDPersönlicher Informationsdienst
PIDProtocol IDentifier
PINGPacket INternet Groper
PIPPicture-In-Picture
PKSPrivatkunden-Service
PKV Privatkunden-Vertrieb
PLCPower Line Communication (2 MBit/s über 10-/20-kV-Leitung)
PLCPPhysical Layer Convergence Protocol
PLLPhase Locked Loop
PMPhysical Medium
PMDPhysical Medium Dependent
PMPPoint to Multipoint
POProper Operation
POHPath Overhead (SONET)
POIPath Overhead Indicator
POPPoint of Presence (Mail-Protokoll)
POPSPoints of Presence
POTSPlain Old Telephone Service
PPAPassiver Prüf-Abschluß
PPDPartial Packet Discard
PPPPoint-to-Point Protocol
PPPoAPPP over ATM
PPPoEPPP over Ethernet
PRIPrimary Rate Interface
PROMProgrammable Read Only Memory
PSDNPublic Switched Data Network (Datex-P)
PSKPhase Shift Keying (Modems)
PSTNPublic Switched Telephone Network (Telefonnetz)
PSTNPublic Switched Telephone Network
PTPayload Type
PTEPath Terminating Equipment (SONET)
PTIPayload Type Identifier
PTSEPNNI Topology State Element (ATM Forum, PNNI)
PTSPPNNI Topology State Packet
PTTPost, Telephone, and Telegraph
PTZFPan-Tilt-Zoom-Focus
PUCPublic Utility Commission
PVCPermanent Virtual Circuit
PVCCPermanent Virtual Channel Connection
PVPCPermanent Virtual Path Connection
PWBPrinted Wire Board

  
Q-FactorQuality for JPEG
QAQuality Assurance
QAMQuadrature Amplitude Modulation (Modems)
QoSQuality of Service
QPSKQuadature Phase Shift Keying (Modems)

  
RARectifier Alarm
RAM Random-Access-Memory (Schreib-/Lese-Speicher)
RARPReverse Address Resoultion Protocol
RASRemote Access Service
RBOCRegional Bell Operating Company
RCARadio Corporation of America
RDIRemote Defect Indicator (UNI Fault Management)
REDRandom Early Discard
RegTPRegulierungsbehörde für Telekommunikation und Postwesen
RFRadio Frequency
RFARectifier Failure Alarm
RFCRequest For Comment
RFFGRemote Forwarder Functional Group
RFIRequest For Information
RFPRequest For Proposal
RFQRequest For Quotation
RGRing Ground
RGBRed-Green-Blue
RIFRate Increase Factor
RIPRouting Information Protocol
RMResource Management
RMONRemote Monitoring
RNARemote Network Access
ROLCRouting Over Large Clouds
ROMRead-Only Memory
RPQRequest for Price Quotation
RSFGRoute Server Functional Group (ATM Forum, MPOA SWG)
RSVPReservation Protocol
RTTYRadio Teletype (Funkfernschreiben)

  
SASource Address
SAASystems Applications Architecture
SAALSignaling ATM Adaptation Layer
SAPService Access Point
SARSegmentation and Reassembly
SASSingle Attached Station
SCStick and Click
SCPSystem control Processor
SCRSilicon-Controlled Rectifier
SCRSustainable Cell Rate
SCSISmall Computer Systems Interface
SCTSame Clock Timing
SDHSynchronous Digital Hierarchy
SDLCSynchronous Data Link Control
SDSLSymmetric Single - pair High - bitrate Digital Subscriber Line
SDUService Data Unit
SEALSimple and Efficient Adaptation Layer
SECAMSequential with Memory
SECBSeverly Errored Cell Block
SELSelector
SESSeverely Errored Seconds
SFSingle Frequency
SFSwitch Fabric
SFDStart of Frame Delimiter
SIStatus Indicator
SIMSubscriber Identity Module card
SIMSubscriber Identity Module
SIMMSingle In-line Memory Module
SIRSustained Information Rate
SLIPSerial Line IP
SMSingle Mode
SMDSSwitched Multimegabit Data Service
SMFSingle Mode Fiber
SMSSelective Multicast Service
SMSShort Message Service (in GSM-Netzen)
SMSShort Message Service
SMTPSimple Mail Transfer Protocol
SNASystems Network Architecture
SNAPSub-Network (Area Protocol) Attachment Point
SNDCFSub-Network Dependent Convergence Function (ATM Forum, MPOA SWG)
SNMPSimple Network Management Protocol
SONETSynchronous Optical Network
SPANSSimple Protocol for ATM Network Signaling
SPVCSoft Permanent Virtual Connection
SRBSource Routing Bridging
SRTSSynchronous Residual Time Stamp
SS7Signaling System #7
SSSwitching System
SSCFService Specific Coordinate Function
SSCOPService Specific Connection Oriented Protocol
SSCSService Specific Convergence Sublayer
STStick and Turn
STDMStatistical Time Division Multiplexing
STESection Terminating Equipment (SONET)
STMSynchronous Transport Module
STPShielded Twisted Pair (geschirmte verdrillte Leitung)
STS-nSynchronous Transport Signal-n
SVASignature componant of AVA/ATV
SVCSwitched Virtual Circuit
SVCCSwitched Virtual Channel Connection
SVPCSwitched Virtual Path Connection
SynchMLSynchronization Markup Language

  
TATerminal Adapter
TACSTotal Access Communications System
TAE-FTAE für Fernsprecher
TAE-NTAE für alle Endeinrichtungen außer Fernsprecher
TAETelekommunikations-Anschluß-Einheit
TAPITelephony Application Programming Interface
TATTheoretical Arrival Time (used in GCRA definition)
TAXITransparent Asynchronous Transmitter/Receiver Interface
TbpsTerabits per second
TCTransmission Convergence
TCATeleCommunications Association
TCP/IPTransmission Control Protocol/Internet Protocol
TCPTransmission Control Protocol
TCRTagged Cell Rate
TDDTime Division Duplex (Senden und Empfangen auf einer Frequenz)
TDMTime Division Multiplexing
TDMATime Division Multiple Access (Zeitschlitzverfahren)
TDSTime Division Switching
TEITerminal End Identifier (interne ISDN-Endgerätenummer)
TFETürfreisprecheinrichtung
TFTPTrivial File Transfer Protocol 
TIATelecommunications Industry Association
TIFTelephone Influence Factor
TIGTopology Information Group (ATM Forum, PNNI)
TkAnlTelekommunikationsanlage (ISDN-NStAnl)
TKOTelekommunikationsordnung
TLDTop-Level Domain
TlnKg Teilnehmerkennung
TMTraffic Management
TPTwsted Pair (verdrillte Leitung)
TSTelekom Service
TSTraffic Shaping
TTYTeletype (Telex)
TUCTotal User Cell count
TUCDTotal User Cell Difference
TUNICTCP/UDP over Non-existent IP Connections
TVStTeilnehmervermittlungsstelle

  
UARTUniversal Asynchronous Receiver/Transmitter
UBRUnspecified Bit Rate
UDPUser Datagram Protocol
ÜP Übergabepunkt
UMEUNI Management Entity (used in ILMI Definition)
UMTSUniversal Mobile Telecommunication System
UMTSUniversal Mobile Telecommunications System
UNCUniversal Naming Convention (z.B. \\Server1\C\Datei.txt)
UNIUser-to-Network Interface
UPUnterputz
UPCUsage Parameter Control
UPSUninterruptable Power Supply (deutsch: USV)
URLUniversal Resource Locator (Internet-Adresse)
USBUniversal Serial Bus
USITAUnited States Independent Telephone Association
USTAUnited States Telephone Association
USTSAUnited States Telecommunications Suppliers Association
USVUnterbrechnungsfreie Stromversorgung
UTUniversal Time (Weltzeit, GMT)
UTPUnshielded Twisted Pair (ungeschirmte verdrillte Leitung)
VAVoltampere
VATVisual Audio Tool
VBRVariable Bit Rate
VCVirtual Circuit
VCCVirtual Channel Connection
VCFCVirtual Channel Flow Control
VCIVirtual Channel Identifier
VCLVirtual Channel Link (UNI 3.0)
VDoVerbinderdose
VDSLVery High Speed Digital Subscriber Line
VDTVideo Display Terminal
VFVoice Frequency
VFDVacuum Fluorescent Display
VGAVideo Graphics Array
VICVideo Conferencing
VINCEVendor Independent Network Control Entity
VLANVirtual LAN
VLSMVariable length Subnet Mask
VLVVery Low Voltage
VNKVermittelnder Netzknoten (digitale VSt)
VoDVideo on Demand
VoIPVoice over IP
VPVirtual Path
VPCVirtual Path Connection
VPCIVirtual Path Connection Identifier
VPIVirtual Path Identifier
VPLVirtual Path Link
VPNVirtual Private Network (private Verbindung via Internet)
VPTVirtual Path Terminator (UNI 3.0)
VS/VDVirtual Source/Virtual Destination
VSVirtual Subnet
VSATVery Small Aperture Terminal
VStVermittlungsstelle
VTOAVoice and Telephony over ATM
VWVorwähler
VxDVirtual Device Driver (Windows), z.B. VKD=Keyboard-Treiber

  
W-CDMAWideband Code Division Multiple Access
WANWide Area Network
WAPWireless Application Protocol
WECOWestern Electric Company
WFQWeighted Fair Queuing
WIDWireless Information Devices
WINSWindows Internet Naming Service (f. NetBIOS über TCP/IP)
WipLLWireless Internet Protocol Local Loop
WMWestern Modular
WWWWorld Wide Web

  
XCCross Connect

  
YUVTV color Scheme
ZGZusatzgerät

  
ZVStW Zentralvermittlungsstellenwähler
ZZFZentralamt für Zulassungen im Fernmeldewesen (heute BZT)
ZZKZentraler Zeichenkanal

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