Glossar
Description: Abkürzungen zu Netzen, Internet, DFÜ und ISDN
Keywords: Abkürzungen Acronyme

| Glossar Netze, Internet und DFÜ von Prof. Jürgen Plate

## Abkürzungen

A/D | Analog-Digital-Umsetzung
AAL1 | ATM Adaptation Layer Type 1
AAL | ATM Adaptation Layer
ABR | Available Bit Rate
AC | Alternating current
ACK | Acknowledgement
ACO | Alarm Cut-Off
ACR | Available Cell Rate
ADo | Anschlußdose
ADPCM | Adaptive Differential Pulse Code Modulation
ADSL | Asymmetric Digital Subscriber Line
AFuG | Amateurfunkgesetz
AHFG | ATM-attached Host Functional Group
AII | Active Input Interface (Used in UNI PMD specs for Copper/Fiber)
AIM | ATM Inverse Multiplexer
AIS | Alarm Indication Signal (UNI Fault Management)
AM | Amplitudenmodulation (Modems)
AMI | Alternate Mark Inversion
AMPS | Advanced Mobile Phone System
AMS | Automatischer Mehrfachschalter
ANIS | Analoger Anschluß an ISDN-Vermittlungsstelle
ANS | ATM Name Service
ANSI | American National Standards Institute
ANSI | American National Standards Institute
AOC-D/-E | Advice of Ccharge
AOI | Active Output Interface (Used in UNI PMD specs for Copper/Fiber)
AP | Aufputz
API | Application Program Interface (Software-Schnittstelle)
API | Applications Programming Interface
ARP | Address Resolution Protocol
ARPANET | Advanced Research Projects Agency Network
AS | Anrufsucher
ASCII | American Standard Code for Information Interchange
ASCII | American Standard for Information Interchange
ASL | Anschlußleitung
ASN.1 | Abstract Syntax Notation One
ASN | Abstract Syntax Notation One
AT | Attention (Zeilenanfang von Modembefehlen)
ATB | Amtliches Telefonbuch
ATE | ATM Terminating Equipment (SONET)
ATM | Asynchronous Transfer Mode (Netzwerkprotokoll)
ATMARP | ATM Address Resolution Protocol
ATMF | ATM Forum
ATU-C | ADSL Tranceiver Unit - Central Office, ADSL Übertragungseinheit
ATU-R | ADSL Transceiver Unit - Remote (ADSL-Modem beim Kunden)
AUI | Attachment Unit Interface (externer Netzwerk-Adapter)
AUI | Attachment Unit Interface
AVON | Amtliches Verzeichnis der Ortsnetzkennzahlen
AVSSCS | Audio-Visual Service Specific Convergence Sublayer (ATM Forum)
AWADo | Automatische-Wechselschalter-Anschluß-Dose
AWG | American Wire Gauge

B-HLI | Broadband High Layer Information
B-ICI | Broadband Inter-Carrier Interface
B-ISDN | Broadband Integrated Services Digital Network
B-ISSI | Broadband Inter-Switching System Interface
B-ISUP | Broadband Integrated Services User Part
B-LLI | Broadband Low Layer Information
B2 | Mobilfunknetz der Telekom
B8ZS | Bipolar 8 Zero Substitution
B | Bearer (64Kbps DS-0 Channel)
BAPT | Bundesamt für Post und Telekommunikation
BBz | Baubezirk
BD | Battery On Discharge
BECN | Backwards Explicit Congestion Notification
BER | Basic Encoding Rules (ASN.1)
BER | Bit Error Rate, Bitfehlerhäufigkeit
BGP | Border Gateway Protocol
BIP | Bit Interleaved Parity
BIPV | Bit Interleaved Parity Violation
BIS | Border Intermediate System (ATM Forum, PNNI SWG)
Bit | Kleinste Informationseinheit, Wert = 0/1 bzw. Nein/Ja
BITS | Building Integrated Timing Supply
BK | Breitbandkommunikation (u.a. Kabelfernsehen)
BOC | Bell Operating Company (or RBOC)
BOM | Begining of Message
BOOTP | Bootstrap Protocol
BPDU | Bridge Protocol Data Unit
bps | Bits per second, Bit/s
bps | bits per second
BRAS | Broadband Remote Access Server
BRI | Basic Rate Interface
BSC | Base Station Controller
BSP | Bell System Practice
BSS | Broadband Switching System
BT | Burst Tolerance
Btx | Bildschirmtext
Bu | Buchungsstelle
BUS | Broadcast Unknown Server
Byte | Gruppe von 8 Bits, kann 1 Zeichen darstellen
BZT | Bundesamt für Zulassungen in der Telekomunikation

C | Mobilfunknetz der Telekom
CAC | Connection Admission Control
CAD/CAM | Computer Aided Design/Computer Aided Manufacturing
CAP | Customer Administration Panel
CAP | Carrierless Amplitude and Phase Modulation
CAPI | Common Application Program Interface (ISDN)
CATV | Community Antenna TeleVision or CAble TeleVision
CBR | Constant Bit Rate
CCBS | Completion of Calls to Busy Subscriber
CCEI | Centre de communication et d'Essais International
CCIF | Comité consultatif international des télécommunications grandes distance (Zwischenstaatlicher beratender Ausschuß für den Fernsprechverkehr)
CCIR | Comité consultatif international des radiocommunications (Zwischenstaatlicher Ausschuß für den Funkdienst)
CCITT | Comité consultatif international télégraphique et téléfonique (jetzt ITU-T)
CCS | Common Channel Signaling
CCSS7 | Common Channel Signaling System 7
CDMA | Code Division Multiple Access
CDO | Community Dial Office or Codial Office
CDV | Cell Delay Variation
CDVT | Cell Delay Variation Tolerance
CEC | Common Equipment Card
CEI | Connection Endpoint Identifier (UNI 3.0)
CEMF | Counter EMF Cells
CEPT | Konferenz der europäischen Post- und Fernmeldeverwaltungen
CER | Cell Error Ratio
CES | Circuit Emulation Service
CHAP | Challenge Handshake Authentication Protocol
CI | Congestion Indicator
CIP | Classical IP over ATM
CIR | Committed Information Rate
CIX | Commercial Internet Exchange
CLIP | Calling Line Identification Presentation (Rufnummernanzeige)
CLIP | Classical IP
CLP | Cell Loss Priority
CLR | Cell Loss Ratio
CLS | Connectionless Service
CMIP | Common Management Information Protocol
CMIS | Common Management Information Service
CMISE | Common Management Information Service Element
CMYK | Cyan-Magenta-Yellow-Black
CNR | Complex Node Representation (ATM Forum, PNNI SWG)
CO | Central Office
CO | Connection-Oriented
Codec | Coder/Decoder
COM | Communication port (serielle Schnittstelle)
CPCS | Common Part Convergence Sublayer
CPE | Customer Premise Equipment
CPI | Common Part Indicator
CRC | Cyclic Redundancy Check (Prüfsummenverfahren)
CRC | Cyclic Redundancy Check
CRF(VC) | Virtual Channel Connection Related Function
CRF(VP) | Virtual Path Connection Related Function
CRF | Cell Relay Function
CRS | Cell Relay Service
CS | Convergence Sublayer
CSMA/CD | Carrier Sense Multiple Access with Collision Detection
CSMA | Carrier Sense Multiple Access (Netz-Kollisionserkennung)
CSMA | Carrier Sense Multiple Access
CSU | Channel Service Unit
CT | Cordless Telephone (Schnurlostelefon, Standards CT1, CT1+, CT2)
CTD | Cell Transfer Delay
CTI | Computer Telephony Integration (Telefonie-Anwendungen)
CVSD | Continuously Variable Slope Delta modulation

DÜE | Datenübertragungseinrichtung (Modem)
D-AMPS | Digital-Advanced Mobile Phone Service
D/A | Digital to analog conversion
D/A | Digital-Analog-Umsetzung
D1 | GSM-Mobilfunknetz der Telekom
D2 | GSM-Mobilfunknetz von Mannesmann Mobilfunk
D | Delta (Q3B+D)
DA | Doppelader
DAC | Dual Attached Concentrator
DARPA | Defense Advanced Research Projects Agency
DAS | Dual Attached Station
DAT | Digital Audio Tape
Datex-J | Datex Jedermann (=Btx)
Datex-L | Datex mit Leitungsvermittlung
Datex-M | Datex MAN
Datex-P | Datex mit Paketvermittlung
Datex | Data exchange
dB | Decibel
dBrnC | Weighted Electrical Noise
DC | Direct Current
DCC | Data Country Code
DCS-1800 | Digital Communications System
DE | Discard Eligibility
DECT | Digital European Cordless Telecommunications
DECT | Digital European Cordless Telephone
DEE | Datenendeinrichtung (Computer, Terminal)
DES | Destination End System
DFÜ | Datenfernübertragung
DFA | Distribution Fuse Alarm
DFS | Deutscher Fernmeldesatellit (Kopernikus)
DHCP | Dynamic Host Configuration Protocol (für dynam. IP-Adr.)
DHCP | Dynamic Host Configuration Protocol
DIP | Dual In-Line Package Switch
DIV | Digitale Vermittlungstechnik
DIVA | DIV Auslandsebene
DIVF | DIV Fernebene
DIVO | DIV Ortsebene
DLC | Data Link Control
DLCI | Data Link Connection Identifier
DLL | Dynamic Link Library, Windows-Bibliotheksdatei
DMA | Direct Memory Access
DMS | Digital Multiplex System
DNID | Data Network IDentification number
DNS | Domain Name Service
DNS | Domain Name System (Namensvergabe in IP-Netzwerken)
DOS | Disk Operating System (MS-DOS, PC-DOS)
DPL | Digital Power Line (1 MBit/s auf 230-V-Leitungen)
DQDB | Distributed Queue Dual Bus
DS-0 | Digital Signal (Level 0)
DS-1 | Digital Signal (Level 1)
DS-3 | Digital Signal (Level 3)
DSAP | Destination Service Access Point
DSL | Digital Subscriber Line
DSLAM | Digital Subscriber Line Access Multiplexer
DSR | Data Set Ready
DSS1 | Protokoll von Euro-ISDN
DSS | Digital Subscriber Service (DSS1=Euro-ISDN)
DSSS | Direct Sequence Spread Spectrum (bei Funk-LANs)
DSt | Dienststelle
DSU | Data Service Unit
DSX | Digital Service Cross-Connect
DT | Direktion Telekom
DTE | Data Terminal Equipment
DTL IE | Designated Transit List Information Ethernet
DTL | Designated Transit List
DMT | Discrete Multi Tone, Vielträgermodulationsverfahren
DTMF | Dual Tone Multi Frequency (Mehrfrequenzverfahren)
DTMF | Dial Tone Multiple Frequency
DSLAM | Digital Subscriber Line Access Multiplexer
DVD | Digital Video Disc.
DVMA | Direct Virtual Memory Access
DWDM | Dense Wavelength Division Multiplexing
DXI | Data Exchange Interface
DXI | Digital Exchange Interface

E&M | Earth & Magnet
E-1 | European (Signal Level 1)
E-3 | European (Signal Level 3)
E1 | PCN-Mobilfunknetz von E-Plus
EAZ | Endgeräte-Auswahlziffer (ISDN-1TR6)
ECM | Error Correction Mode
ECM | External Configuration Model
ECT | Explicit Call Transfer (Vermitteln bei ISDN)
EDFG | Edge Device Functional Group (ATM Forum, MPOA SWG)
EDGE | Enhanced Data Rates for GSM Evolution
EDI | Electronic Data Interchange
EEPROM | Electric Ereasable Progamable ROM (elektrisch löschbares Read-Only-Memory)
EFCI | Explicit Forward Congestion Indication
EFCN | Explicit Forward Congestion Notification
EGC | Enhanced Group Call (Inmarsat-C)
EGP | External (Exterior) Gateway Protocol
EISA | Extended Industry Standard Architecture
ELAN | Emulated LAN (ATM Forum LANE)
EMD | Edelmetallmotordrehwähler
EMI | ElectroMagnetic Interface
EMI | Electromagnetic Interference
EMS | Element Management System
ENID | EGC network ID (Inmarsat-C)
EOM | End of Message
EPRCA | Enhanced Proportional Rate Control Algorithm
EPROM | Erasable Programmable Read-Only Memory
EPROM | Ereasable Progamable ROM (mit UV-Licht löschbares Read-Only-Memory)
EQL | Equilization
ER | Explicit Rate
ER | Externer Rechner (bei Datex-J)
ES | Erred Seconds
ESCON | Enterprise Systems CONnection
ESF | Extended Super Frame
ESI | End System Identifier
ESN | Electronic Serial Number
ESS | Electronic Switching System
ETACS | Extended Total Access Communications System
ETSI | European Telecommunication Standards Institute
EVZ | Endverzweiger
EWS | Elektronisches Wählsystem
EWSA | Elektronisches Wählsystem analog
EWSD | Elektronisches Wählsystem digital
EWSM | Elektronisches Wählsystem Metropolitan Area Network
EWSO | Elektronisches Wählsystem Ortstechnik

FA | Fernmeldeamt
FA | Fuse Alarm
FAG | Fernmeldeanlagengesetz
FCAPS | Fault, Configuration, Accounting, Performance, Security
FCC | Federal Communications Commission
FCS | Frame Check Sequence
FCS | Frame Checksum (Rahmenprüfsumme, vgl. CRC)
FCVC | Flow Controlled Virtual Circuit
FD | Frame Discard
FDDI | Fiber Distributed Data Interface (Glasfasernetz)
FDDI | Fiber Distributed Data Interface
FDM | Frequency Division Multiplex
FDMA | Frequency Division Multiple Access (Mehrkanalbetrieb)
FEA | Functional Entity Action (UNI 3.0, C.3.2.3)
FeAp | Fernmeldeapparat
FEBE | Far End Block Error (SONET)
FEC | Forward Error Correction
FECN | Forward Explicit Congestion Notification
FeTAp | Fernsprechtischapparat
FeWAp | Fensprechwandapparat
FEXT | Far End Crosstalk - Übersprechen am fernen Ende
FG | Functional Group (ATM Forum, MPOA SWG)
FGD | Frame Ground
FHSS | Frequency Hopping Spread Spectrum (bei Funk-LANs)
FIFO | First-In, First-Out buffer (z.B. bei COM-Ports)
FIFO | First-In, First-Out
FM | Frequenzmodulation
FO | Fiber Optics
FQ | Fair Queuing
FR-SSCS | Frame Relay Service Specific Convergence Sublayer
FR | Frame Relay
FSK | Frequency Shift Keying (Modems)
FTP | File Transfer Protocol
FTP | File Transfer Protocol
FTZ | Fernmeldetechnisches Zentralamt
FUD | Fear Uncertainty Doubt
FUNI | Frame based User-to-Network Interface (ATM Forum)

G | Abkürzung für "Giga", 1 Milliarde, z.B. 1 GHz = 1000 MHz
GAN | Global Area Network
GAP | Generic Access Profile
GB | GigaByte
GbAnz | Gebührenanzeiger
GBI | Gebührenimpuls
Gbps | Gigabit per second
GCRA | Generic Cell Rate Algorithm
GDT | Generaldirektion Telekom
GFC | Generic Flow Control
GKS | Geschäftskunden-Service
GMSK | Gaussian Minimum Shift Keying (GSM-Modulation)
GMT | Greenwich Mean Time (Weltzeit, wie UT)
GOSIP | Government OSI Protocol
GPRS | General Packet Radio Service (in GSM-/UMTS-Netzen)
GPRS | General Packet Radio Service for GSM networks
GPS | Global Positioning System (Satelliten-Navigationsdienst)
GSM | Global System for Mobile Communication
GSM | Global System for Mobile communications
GSM | Group Special Mobile
GSM | Groupe Speciale Mobile
GUI | Graphical User Interface
GW | Gruppenwähler

HBFG | Host Behavior Functional Group (ATM Forum, MPOA SWG)
HDLC | High speed Data Link Control
HDLC | High-Performance Data Link Control
HDSL | High Bitrate Digital Subscriber Line
HDTV | High Definition Television
HDW | Hebdrehwähler
HEC | Header Error Check
HEC | Header Error Control
HEX | Hexadezimal, Zahlensystem mit Basis=16; Ziffern 0-9 und A-F
HF | High Frequency
HLS | Hue-Lightness-Saturation
HPPI | High Performance Parallel Interface
HSCSD | High Speed Circuit Switched Data
HSCSD | High-Speed Circuit Switched Data (in GSM-Netzen)
HSSI | High Speed Serial Interface
HTML | Hyper-Text Markup Language
HTML | Hypertext Markup Language
HTTP | Hyper Text Transfer Protocol
HTTP | Hypertext Transfer Protocol
HV | High Voltage
HVStW | Hauptvermittlungsstellenwähler
HVt | Hauptverteiler
Hz | Hertz, Schwingungen pro Sekunde

I&R | Installation And Repair
I-PNNI | Integrated PNNI
I/O | Input/Output
IAB | Internet Activities Board
IAE | ISDN-Anschluß-Einheit
IANA | Internet Assigned Numbers Authority
IASG | Internetwork Address Sub-Group (ATM Forum, MPOA SWG)
IBSG | Internetwork Broadcast Sub-Group (ATM Forum, MPOA SWG)
IBUFG | Internetwork Broadcast/Unknown Functional Group (ATM Forum, MPOA SWG)
IC | Integrated Circuit
ICFG | IASG Coordinating Function Group (ATM Forum, MPOA SWG)
ICI | Inter-Carrier Interface
ICMP | Internet Control Message Protocol
ICT | Implicit Call Transfer (ISDN-Vermitteln durch Halten/Auflegen)
IDN | Integrated Digital Network
IDP | Initial Domain Part
IDPS | Inmarsat Data Packet Service
IDRP | Inter-Domain Routing Protocol
IDSL | ISDN Digital Subscriber Line
IDU | Interface Data Unit (UNI 3.0)
IE | Information Element
IEC | Inter-Exchange Carrier
IEE | Institution of Electrical Engineers
IEEE | Institute of Electrical and Electronic Engineers
IESG | Internet Engineering Steering Group
IETF | Internet Engineering Task Force
IGMP | Internet Group Management Protocol
IGP | Internal (Interior) Gateway Protocol
IGRP | Internal (Interior) Gateway Routing Protocol
IISP | Interim Inter-Switch Signaling Protocal (P-NNI Phase 0)
ILMI | Interim Local Management Interface
IMT-2000 | International Mobile Telecommunications-2000
IN | Intelligent Net (z.B. Service 130 etc.)
IN | Intelligent Network
IP | Internet Protocol
IPI | Intelligent Peripheral Interface
IPX/SPX | Internet Packet Exchange/Sequenced Packed Exchange
IR | Infra-Red Controller
IS-IS | Intermediate System-to-Intermediate System
ISDN | Integrated Services Digital Network
ISO | International Standards Organization
ISOC | Internet Society
ISP | Internet Service Provider
ISSI | Inter-Switching System Interface
ITU-T | International Telecommunications Union Telecommunication Standardization Sector
ITU | International Telecommunication Union
IWF | Inter-Working Function
IWV | Impulswählverfahren
IXC | Inter eXchange Carrier

JPEG | Joint Pictures Experts Group

k | Abkürzung für die Zahl 1000, z.B. 1 kHz = 1000 Hz
K | Abkürzung für die Zahl 210 = 1024, z.B. 1 KBit = 1024 Bit
KHz | Kilohertz
KVA | Kilovoltampere
KVSt | Knotenvermittlungsstelle
KVStW | Knotenvermittlungsstellenwähler
KVZ | Kabelverzweiger
KW | Kilowatt
KWh | Kilowattstunden

LAN | Local Area Network (lokales Netzwerk)
LANE | LAN Emulation (ATM Forum)
LAP-B | Link Access Protocol-Balanced
LAP | Link Access Protocol (Übertragungsprotokoll)
LAPB | Link Access Protocol B-Channel
LAPD | Link Access Protocol D-Channel
LATA | Local Access Transport Area
LBL | Lawrence Berkeley Labs
LBO | Line Build Out
LCD | Liquid Crystal Display
LCD | Loss of Cell Delineation
LCT | Last Compliance Time (used in GCRA definition)
LE | Link Encapsulation
LEC | LAN Emulation Client or Local Exchange Carrier
LEC | Local Exchange Carrier
LECS | LAN Emulation Configuration Server
LED | Light Emitting Diode
LENNI | LAN Emulation NNI
LES | LAN Emulation Server
LES | Land Earth Station (Satelliten-Erdfunkstelle)
LGN | Logical Group Node (ATM Forum, PNNI)
LIFO | Last-in, First-Out
LIS | Logical IP Subnet
LLC/SNAP | Logical Link Control/Subnetwork Access Protocol
LLC | Logical Link Control
LOF | Loss of Frame
LOP | Loss of Pointer
LOS | Loss of Signal
LPC | Linear Predictive Coding (GSM-Sprachkompression)
LPT | Line PrinTer port (Parallel-Port für Druckeranschluß)
LRF | Little Rubber Feet
LRU | Last recently used (Cache-Strategie)
LSB | Least Significant Bit
LTE | Line Terminating Equipment
LUNI | LAN Emulation UNI
LV | Low Voltage
LW | Leitungswähler

M | Abkürzung für 1 Million, manchmal auch 220 = 1.048.576
MAC | Media Access Control (Netzwerk-Schnittstelle)
MAN | Metropolitan Area Network (Stadtnetz)
MARS | Multicast Address Resolution Server (Draft IETF-IPATM-IPMC-04)
MAU | Medium Attachment Unit (IEEE 802.3)
MAU | Multistation Access Unit (IEEE 802.5)
MBONE | Multi-Media Backbone
Mbps | Megabits (millions of bits) per second
MBS | Maximum Burst Size
MCC | Maintenance Control Center
MCR | Minimum Cell Rate
MCS | Multicast Server
MDF | Main Distribution Frame
MES | Mobile Earth Station (mobile Satelliten-Anlage)
MExE | Mobile Station Application Execution Environment
MFV | Mehrfrequenzcode-Wählverfahren
MHC | Modified Huffman Code
MIB | Management Information Base
MID | Message IDentifier
MIME | Multipurpose Internet Mail Extensions
MJPEG | Motion JPEG
MM | Multi-Mode
MMF | MultiMode Fiber
MMR | Modified Modified Read
MNP | Microcom Networking Protocol
MPC | MPOA Client
MPEG | Motion Picture Experts Group
MPLS | Multi-Protocol Label Switching
MPOA | MultiProtocol Over ATM
MPS | MPOA Server
MRC | Modified Read Code
MSA | Metropolitan Statistical Area
MSB | Most Significant Bit
MSC | Mobile Switching Center
MSN | Multiple Subscriber Number (ISDN-Rufnummer)
MTBF | Mean Time Between Failure
MTBO | Mean Time Between Outages
MTSO | Mobile Telephone Switching Office
MTSR | Mean Time To Service Restoral
MTTR | Mean Time To Repair
MTU | Maximum Transfer Unit

NAM | Number Assignment Module
NAU | Network Access Unit
NAUN | Nearest Available Upstream Neighbor
NBMA | Non-Broadcast Multiple Access
NC | Normally Closed
NCC | Network Control Center
NDIS | Network Device Interface Specification
NE | Network Element
NEBS | Network Equipment Building Spec
NEMA | National Electrical Manufacturers Association
NetBEUI | NetBIOS Extended User Interface
NetBIOS | Network Basic Input/Output System
NEXT | Near End Crosstalk - Übersprechen am nahen Ende
NHRP | Next Hop Resolution Protocol
NHS | Next Hop Server
NIC | Network Information Center (vergibt Internet-Domains)
NICNAME | Network Information Center Name Service
NIU | Network Interface Unit
NIWF | Network Interworking Function
NLPID | Network Layer Protocol ID
NM | Network Management
NMCC | Network Management Control Center
NME | Network Management Entity
NML | Network Management Layer
NMS | Network Management Station
NMT | Nordic Mobile Telephone
NMVT | Network Management Vector Transport
NNI | Network-to-Network Interface
NO | Normally Open
NRZ | Non-Return to Zero
NRZI | Non-Return to Zero Inverted
NSAP | Network Layer Service Access Point
NSF | National Science Foundation Network
NSt | Nebenstelle
NStAnl | Nebenstellenanlage
NT | Network Termination (ISDN)
NT | Network Termination (ISDN-Hausanschluß)
NTA | Network Termination Analog; siehe PPA
NTBA | Network Termination Basis Anschaltung
NTSC | National Television Standards Committee

OAM | Operations, Administration, and Maintenance
OBEX | Object Exchange
OC-n | Optical Carrier-n
OCA | Over Current Alarm
OCC | Other Common Carriers
OCD | Out-of-Cell Delineation (UNI 3.0 Section 2.1.2.2.2)
ODI | Open Data Link Interface
OEM | Original Equipment Manufacturer
ON | Ortsnetz
ONA | Open Network Architecture
ONKZ | Ortsnetzkennzahl
OOF | Out of Frame
OOS | Out of Service
OPAL | Optische Anschlußleitung
OS | Operating System
OSI | Open Standards Interface (ISO-Schichtenmodell)
OSI | Open Systems Interconnect
OSP | Outside Plant
OSPF | Open Shortest Path First
OUI | Organizationally Unique Identifier (RFC 1483)
P-NNI | Private Network-to-Network Interface or Private Network Node Interface
PABX | Private Automatic Branch Exchange (Nebenstellenanlage)
PAD | Packet Assembly/Disassembly (Datex-P)
PAL | Phase Alternating Line
PAP | Password Authentication Protocol
PBX | Private Branch Exchange
PC | Priority Control
PCB | Printed Circuit Board
PCM | Pulse Code Modulation (ISDN-Sprachcodierung)
PCN | Personal Communications Network
PCR | Peak Cell Rate
PCS | Personal Communications Service
PD | Propagation Delay
PDC | Personal Digital Cellular
PDH | Plesiochronous Digital Hierarchy
PDSC | Power Distribution Servicing Cabinet
PDU | Packet Data Unit
PDU | Protocol Data Unit
PGL | Peer Group Leader (ATM Forum, PNNI)
PID | Persönlicher Informationsdienst
PID | Protocol IDentifier
PING | Packet INternet Groper
PIP | Picture-In-Picture
PKS | Privatkunden-Service
PKV | Privatkunden-Vertrieb
PLC | Power Line Communication (2 MBit/s über 10-/20-kV-Leitung)
PLCP | Physical Layer Convergence Protocol
PLL | Phase Locked Loop
PM | Physical Medium
PMD | Physical Medium Dependent
PMP | Point to Multipoint
PO | Proper Operation
POH | Path Overhead (SONET)
POI | Path Overhead Indicator
POP | Point of Presence (Mail-Protokoll)
POPS | Points of Presence
POTS | Plain Old Telephone Service
PPA | Passiver Prüf-Abschluß
PPD | Partial Packet Discard
PPP | Point-to-Point Protocol
PPPoA | PPP over ATM
PPPoE | PPP over Ethernet
PRI | Primary Rate Interface
PROM | Programmable Read Only Memory
PSDN | Public Switched Data Network (Datex-P)
PSK | Phase Shift Keying (Modems)
PSTN | Public Switched Telephone Network (Telefonnetz)
PSTN | Public Switched Telephone Network
PT | Payload Type
PTE | Path Terminating Equipment (SONET)
PTI | Payload Type Identifier
PTSE | PNNI Topology State Element (ATM Forum, PNNI)
PTSP | PNNI Topology State Packet
PTT | Post, Telephone, and Telegraph
PTZF | Pan-Tilt-Zoom-Focus
PUC | Public Utility Commission
PVC | Permanent Virtual Circuit
PVCC | Permanent Virtual Channel Connection
PVPC | Permanent Virtual Path Connection
PWB | Printed Wire Board

Q-Factor | Quality for JPEG
QA | Quality Assurance
QAM | Quadrature Amplitude Modulation (Modems)
QoS | Quality of Service
QPSK | Quadature Phase Shift Keying (Modems)

RA | Rectifier Alarm
RAM | Random-Access-Memory (Schreib-/Lese-Speicher)
RARP | Reverse Address Resoultion Protocol
RAS | Remote Access Service
RBOC | Regional Bell Operating Company
RCA | Radio Corporation of America
RDI | Remote Defect Indicator (UNI Fault Management)
RED | Random Early Discard
RegTP | Regulierungsbehörde für Telekommunikation und Postwesen
RF | Radio Frequency
RFA | Rectifier Failure Alarm
RFC | Request For Comment
RFFG | Remote Forwarder Functional Group
RFI | Request For Information
RFP | Request For Proposal
RFQ | Request For Quotation
RG | Ring Ground
RGB | Red-Green-Blue
RIF | Rate Increase Factor
RIP | Routing Information Protocol
RM | Resource Management
RMON | Remote Monitoring
RNA | Remote Network Access
ROLC | Routing Over Large Clouds
ROM | Read-Only Memory
RPQ | Request for Price Quotation
RSFG | Route Server Functional Group (ATM Forum, MPOA SWG)
RSVP | Reservation Protocol
RTTY | Radio Teletype (Funkfernschreiben)

SA | Source Address
SAA | Systems Applications Architecture
SAAL | Signaling ATM Adaptation Layer
SAP | Service Access Point
SAR | Segmentation and Reassembly
SAS | Single Attached Station
SC | Stick and Click
SCP | System control Processor
SCR | Silicon-Controlled Rectifier
SCR | Sustainable Cell Rate
SCSI | Small Computer Systems Interface
SCT | Same Clock Timing
SDH | Synchronous Digital Hierarchy
SDLC | Synchronous Data Link Control
SDSL | Symmetric Single - pair High - bitrate Digital Subscriber Line
SDU | Service Data Unit
SEAL | Simple and Efficient Adaptation Layer
SECAM | Sequential with Memory
SECB | Severly Errored Cell Block
SEL | Selector
SES | Severely Errored Seconds
SF | Single Frequency
SF | Switch Fabric
SFD | Start of Frame Delimiter
SI | Status Indicator
SIM | Subscriber Identity Module card
SIM | Subscriber Identity Module
SIMM | Single In-line Memory Module
SIR | Sustained Information Rate
SLIP | Serial Line IP
SM | Single Mode
SMDS | Switched Multimegabit Data Service
SMF | Single Mode Fiber
SMS | Selective Multicast Service
SMS | Short Message Service (in GSM-Netzen)
SMS | Short Message Service
SMTP | Simple Mail Transfer Protocol
SNA | Systems Network Architecture
SNAP | Sub-Network (Area Protocol) Attachment Point
SNDCF | Sub-Network Dependent Convergence Function (ATM Forum, MPOA SWG)
SNMP | Simple Network Management Protocol
SONET | Synchronous Optical Network
SPANS | Simple Protocol for ATM Network Signaling
SPVC | Soft Permanent Virtual Connection
SRB | Source Routing Bridging
SRTS | Synchronous Residual Time Stamp
SS7 | Signaling System #7
SS | Switching System
SSCF | Service Specific Coordinate Function
SSCOP | Service Specific Connection Oriented Protocol
SSCS | Service Specific Convergence Sublayer
ST | Stick and Turn
STDM | Statistical Time Division Multiplexing
STE | Section Terminating Equipment (SONET)
STM | Synchronous Transport Module
STP | Shielded Twisted Pair (geschirmte verdrillte Leitung)
STS-n | Synchronous Transport Signal-n
SVA | Signature componant of AVA/ATV
SVC | Switched Virtual Circuit
SVCC | Switched Virtual Channel Connection
SVPC | Switched Virtual Path Connection
SynchML | Synchronization Markup Language

TA | Terminal Adapter
TACS | Total Access Communications System
TAE-F | TAE für Fernsprecher
TAE-N | TAE für alle Endeinrichtungen außer Fernsprecher
TAE | Telekommunikations-Anschluß-Einheit
TAPI | Telephony Application Programming Interface
TAT | Theoretical Arrival Time (used in GCRA definition)
TAXI | Transparent Asynchronous Transmitter/Receiver Interface
Tbps | Terabits per second
TC | Transmission Convergence
TCA | TeleCommunications Association
TCP/IP | Transmission Control Protocol/Internet Protocol
TCP | Transmission Control Protocol
TCR | Tagged Cell Rate
TDD | Time Division Duplex (Senden und Empfangen auf einer Frequenz)
TDM | Time Division Multiplexing
TDMA | Time Division Multiple Access (Zeitschlitzverfahren)
TDS | Time Division Switching
TEI | Terminal End Identifier (interne ISDN-Endgerätenummer)
TFE | Türfreisprecheinrichtung
TFTP | Trivial File Transfer Protocol&nbsp;
TIA | Telecommunications Industry Association
TIF | Telephone Influence Factor
TIG | Topology Information Group (ATM Forum, PNNI)
TkAnl | Telekommunikationsanlage (ISDN-NStAnl)
TKO | Telekommunikationsordnung
TLD | Top-Level Domain
TlnKg | Teilnehmerkennung
TM | Traffic Management
TP | Twsted Pair (verdrillte Leitung)
TS | Telekom Service
TS | Traffic Shaping
TTY | Teletype (Telex)
TUC | Total User Cell count
TUCD | Total User Cell Difference
TUNIC | TCP/UDP over Non-existent IP Connections
TVSt | Teilnehmervermittlungsstelle

UART | Universal Asynchronous Receiver/Transmitter
UBR | Unspecified Bit Rate
UDP | User Datagram Protocol
ÜP | Übergabepunkt
UME | UNI Management Entity (used in ILMI Definition)
UMTS | Universal Mobile Telecommunication System
UMTS | Universal Mobile Telecommunications System
UNC | Universal Naming Convention (z.B. \\Server1\C\Datei.txt)
UNI | User-to-Network Interface
UP | Unterputz
UPC | Usage Parameter Control
UPS | Uninterruptable Power Supply (deutsch: USV)
URL | Universal Resource Locator (Internet-Adresse)
USB | Universal Serial Bus
USITA | United States Independent Telephone Association
USTA | United States Telephone Association
USTSA | United States Telecommunications Suppliers Association
USV | Unterbrechnungsfreie Stromversorgung
UT | Universal Time (Weltzeit, GMT)
UTP | Unshielded Twisted Pair (ungeschirmte verdrillte Leitung)
VA | Voltampere
VAT | Visual Audio Tool
VBR | Variable Bit Rate
VC | Virtual Circuit
VCC | Virtual Channel Connection
VCFC | Virtual Channel Flow Control
VCI | Virtual Channel Identifier
VCL | Virtual Channel Link (UNI 3.0)
VDo | Verbinderdose
VDSL | Very High Speed Digital Subscriber Line
VDT | Video Display Terminal
VF | Voice Frequency
VFD | Vacuum Fluorescent Display
VGA | Video Graphics Array
VIC | Video Conferencing
VINCE | Vendor Independent Network Control Entity
VLAN | Virtual LAN
VLSM | Variable length Subnet Mask
VLV | Very Low Voltage
VNK | Vermittelnder Netzknoten (digitale VSt)
VoD | Video on Demand
VoIP | Voice over IP
VP | Virtual Path
VPC | Virtual Path Connection
VPCI | Virtual Path Connection Identifier
VPI | Virtual Path Identifier
VPL | Virtual Path Link
VPN | Virtual Private Network (private Verbindung via Internet)
VPT | Virtual Path Terminator (UNI 3.0)
VS/VD | Virtual Source/Virtual Destination
VS | Virtual Subnet
VSAT | Very Small Aperture Terminal
VSt | Vermittlungsstelle
VTOA | Voice and Telephony over ATM
VW | Vorwähler
VxD | Virtual Device Driver (Windows), z.B. VKD=Keyboard-Treiber

W-CDMA | Wideband Code Division Multiple Access
WAN | Wide Area Network
WAP | Wireless Application Protocol
WECO | Western Electric Company
WFQ | Weighted Fair Queuing
WID | Wireless Information Devices
WINS | Windows Internet Naming Service (f. NetBIOS über TCP/IP)
WipLL | Wireless Internet Protocol Local Loop
WM | Western Modular
WWW | World Wide Web

XC | Cross Connect

YUV | TV color Scheme
ZG | Zusatzgerät

ZVStW | Zentralvermittlungsstellenwähler
ZZF | Zentralamt für Zulassungen im Fernmeldewesen (heute BZT)
ZZK | Zentraler Zeichenkanal

Copyright © Prof. Jürgen Plate, Fachhochschule München