List of Telecom Acronyms

Fast Access by initial character

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 Z

1

1TR6: 1. Technische Richtlinie Nr. 6 (German) [German ISDN standard, will be replaced by 1999 by DSS1]

A

A/M: Agent/Manager
AAB: Automatic Alternative Billing
AAL: ATM Adaptation Layer [procedures to map ATM layer information into higher levels]
ABI: Application Binary Interface
ABR: Available Bit Rate [vs. CBR or VBR]
ABS: Alternate Billing Services
AC: Alarm Code(1)
ACA: Automated Cable Analysis
ACC: Automatic Congestion Control [congested switches automatically communicate their congestion level to other switches]
AcceSS7: [HP Distributed solution for monitoring and surveillance of SS7 networks, based on probes]
ACD: Automatic Call Distribution [private system service that routes calls to stations based on customer needs]
ACE: Application Creation Environment(1)
ACG: ? Call Gapping
ACIS: Advanced Cago Information System [(satellite based) data network for monitoring the progress of cargo through ports and by rail, UNCTAD stimulated]
ACL: Application Connectivity Link(1) [e.g. used by SIEMENS Hicom telephone equipment]
ACM: Address CoMplete [B-ISDN user part message]
ACMA: Automatic Customer Name and Address
ACO: Alarm Cut-Off
ACP: Action Control Point(1) [user offices that provide access and interfaces to generally centralized NCPs]
ACSE: Association Control Service Entity (or Element) [in the OSI model an application-layer protocol that is used to establish and terminate an association between applications on the same or different systems; (german) Funktionseinheit zum Auf- und Abbau von Schicht-7-Verbindungen]
ACT: Advanced (or Applied) Computerised Telephony
ACTS: Advanced Communications Technologies and Services [EU research and development program, starts 1995, 630MEcu, devoted to projects in developing the European information highway]
ADC: American Digital Cellular(1) [US mobile phone standard equivalent to GSM]
ADD: Architectural Design Document [leads to DDD]
ADE: Above Decks Equipment
ADM: Add-Drop Multiplex(ers)(1) [aka drop-insert multiplexes, used for SDH networks]
ADPCM: Adaptive Differential Pulse Code Modulation
ADSL: Asymmetric Digital Subscriber Line [broadband standard with 7.5 Megabit/sec and reply channel with 384 Kilobit/sec, based on copper lines]
ADTS: Advanced Digital Terminal System
AE: Alarmeingang(1) (German)
AEK: AE-Kennung (German)
AEN: AE-Nummer (German)
AERM: Alignment Error Rate Monitor [used in network and transmission troubleshooting]
AES: Application Environment Specification [by OSF]
AFC: Application Foundation Classes [published by Microsoft; collection of platform independent class libraries; written in Java, based on AWT]
AFR: Annual Failure Rate
AFS: Andrew File System [comparable with NFS]
AGCH: Access Grant Channel
AGK: Anlagen- und Geraetekonfiguration (German)
AH: Alarm Handler(1)
AIC: Adaptation and Integration Center [HP internal]
AIN: Advanced Intelligent Network [architectural concept for the creation and provision of telecom services. The local exchange carriers in the U.S. are developing the next generation of network technology, called the Advanced Intelligent Network. This technology promises to bring advanced capabilities to residential, business, and mobile customers on the local network level - capabilities that previously have been available either only in the long-distance networks or not at all.]
AIP: ATM Interface Processor
AIS: Alarm Indication Signal
ALK: Alarmerfassungs- und Loopsteuerkonzentrator (German)
ALM: Alarmmelde- und Loopsteuerbaugruppe (German)
ALMA: Alcatel Management Applications
ALMAP: Alcatel MAnagement Platform
AMIC: AMericas Integration Center
AMP: Account Management Plan
AMPS: Advanced Mobile Phone System
AMS: Alarm Management System
AN: Access Network
ANI: Automatic Number Identification [number of the calling station]
ANM: Autonomous Network Manager(1)
ANR: Automatic Network Routing
ANSI: American National Standards Institute
ANT: Applied Network Technology Inc. [telecom switch provider]
AoC: Advice of Charge
AOM: Application OSI(1) Management (Profile)
AP: Application Program
APCG: ATM Pilot Coordination Group
API: Application Programming Interface [e.g. based on XMP]
APPC: Advanced Program-to-Program Communication
APPLET: mini APPLication [Java language program]
APPN: Advanced Peer-to-Peer Networking (in SNA networks)
APS: Automatic Protection Switch
ARF: Application Registration File [used for integrating a map builder in OV]
ARM: Application Response Measurement API [open API for end-to-end measurement of application transactions; based on a collaboration between HP RPM/OV program and Tivoli/IBM]
ARP: Address Resolution Protocol [TCP/IP based, to bind an IP address to a LLA(1)]
ARPA: Advanced Research Project Agency
ARS: Action Request System [Remedy product for managing trouble tickets]
AS: Alarmstufe(1) (German)
ASB: Alarmsignalbearbeitung (German)
ASC: Available Spare Capacity(1)
ASE: Alarmsignalerfassung(1) (German)
ASI: Alarmsignalinitialisierung (German)
ASIC: Application Specific Integrated Circuit
ASN.1: Abstract Syntax Notation One [OSI(1) standard for encoding and decoding information, used by CMIP and - as a subset - SNMP for defining low level MIB objects; machine independent formal description language for the data itself and information regarding the type of data, composed of a transaction segment and a component segment, presentation Layer service, see also SMI]
ASPI: Advanced SCSI Programming Interface
ASR: Answer Seize Ratio(1) [NMAS performance indicator]
AST: Acceptance and System Test [part of SVVP]
ASV: Alarmsignalverknuepfung (German)
ATA: AT Attachment [bus alike PC peripheral interface]
ATC: ATM Transfer Capability
ATCS: Advanced Timed Channel Selection [based on FHSS. Wireless transmission method supports transfer rates of 625kb/s, by periodically - each 7 ms - changing to one of 80 parallel channels or frequencies]
ATG: Advanced Technology Groups
ATM: Asynchronous Transfer Mode [base for future broadband ISDN, 53 Byte packets, current standards: SONET/SDH, DS3, TAXI and Fiber Channel system, user network interface has to support bandwidths of 155 Mbs or 600 Mbs. An international ISDN high-speed, high-volume, packet-switching transmission protocol standard. ATM uses short, uniform, 53-byte cells to divide data into efficient, manageable packets for ultrafast switching through a high-performance communications network. The 53-byte cells contain 5-byte destination address headers and 48 data bytes. ATM is the first packet-switched technology designed from the ground up to support integrated voice, video and data communication applications. It is well-suited to high-speed WAN transmission bursts. ATM currently accommodates transmission speeds from 64 Kbps to 622 Mbps. ATM may support gigabit speeds in the future.]
ATMS: Assumption-Based Truth Maintenance System
ATO: Australian Telecom Operation [HP division]
ATP: Advanced Technology Program(1)
ATS: Acceptance Test Specification
AU: Administration Unit(1)
AUC: Authentication Centre
AUI: Attachment Unit Interface
AV: Alarm Viewer [e.g. part of FMP. Interface between alarm handler and operator]
AVA: Attribute Value Assertion [to identify a MO within the scope of is superior object]
AWT: Abstract Windowing Toolkit [Java's platform- independent windowing, graphics and user-interface toolkit]
AXE: [Ericsson switch]
AZNR: Alarm-Zettel-Nummer (German)

B

B-DCN: Backbone Data Communications Network
B-ISDN: Broadband ISDN [usually implemented using ATM, with bandwidths from 10 Mbs to 155 Mbs]
BACP: Bandwidth Allocation Control Protocol
BAF: Bellcore Accounting Format [standard billing format]
BAIC: Barring of All Incoming Calls
BAM: Bell Atlantic Mobile [US network provider]
BAOC: Barring of All Outgoing Calls
BAP: Bandwidth Allocation Protocol
BAS: (Mobitex) BASe station [ transmitting data packages between terminal radio modem and BAS with 8kb/s, see also BTS]
BB: Base Band
BBN: (German) BundesBehoerdenNetz
BBS: Bulletin Board System [newsgroup service in the Internet]
BC: Bearer Capability
BCC: Block Check Character(1)
BCCH: Broadcast Control Channel
BCF: Bearer Control Function
BCM: Basic Call Model
BCP: Basic Call Process
BCR: Block Cell Rate
BCS: Block Check Sequence
BCTS: Backup Courier Time Server [backup for a CTS]
BD: Betriebsdaten (German)
BDA: BD-Analyse (German)
BDAT: Best Demonstrable Achievable Technology
BDB: BD-Bearbeitung (German)
BDE: BD-Erhebung (German)
BE: BeschaltungsEinheit (German)
BECN: Backward Explicit Congestion Notification [notifiying bit, informing a DTE about an overload situation]
BEDOS: BEleg-DOkumentationsSystem (German)
BER: Basic Encoding Rules(1) [method for encoding data in the OSI environment]
BERT: Bit Error Rate Test set [to be used in connectivity checking/fault diagnosis]
BF: BB Frequency
BFM: Business Function Model
BGP4: Border Gateway Protocol [replacement protocol for EGP; defined in RFC1163; BGP4 supports classless interdomain routing, enabling to reduce the size of routing tables by creating aggregate routes]
BGS: Business Group Services [or 'Advanced Centrex']
BF: Basic Function
BFS: Betriebsfuehrungssystem (German)
BFV: Betriebsfuehrungsvorfeldrechner (German) [HP9000]
BFZ: Betriebsfuehrungs-Zentraleinheit (German) [HP1000]
BHCA: Busy Hour Call Attempts
BIB: Backward Indicator Bit [part of MSU]
BIC: Barring of Incoming Calls
BIDS: Barring of Incoming Calls
BIS: Base InfraStructure
BISUP: Broadband ISDN User Part [extensions to ISUP to support BISDN services]
BITA: Business to (or and) IT Alignment
BLA: BLocking Acknowledgement [B-ISDN user part message]
BLK: Bedienungs- und Loopsteuerkonzentrator (German) [Siemens MX300]
BLO: BLOcking [B-ISDN user part message]
BLOP: Binary Large Object [e.g. graphics of a digitized document, up to GB]
BM: Business Management
BMAS: Business Management System [part of MAS]
BML: Business Management Layer
BMP: Billing Mediation Platform(1) [for collecting Call Data Records to pass them to a billing system, developed by SNO]
BMS: Billing Mediation System
BNF: Backus-Naur Form
BOA: Basic Object Adapter [part of CORBA]
BOC: Bell Operating Companies ["Baby Bells"]
BOEOC: Bit-Oriented Embedded Operations Channel
BOF: Birds Of a Feather
BOIC: Barring of Outgoing International Calls
BOIC-exHC: BOIC except those directed towards the home PLMN country
BOM: Business Object Model
BONT: Broadband Optical Network Termination
BOOTP: BOOTstrap Protocol
BOP: Bit Oriented Protocol
BP: Burst Period
BPI: Bit Per Inch
BPM: Business Process Model
BPR: Business Process Re-Engineering
BPSK: Bi-Phase Shift Keying
BRAVO: BReitbandAnwendungen in Verteilten Organisationen [pilot project of DeTeBerkom, Berlin]
BRI: Basic Rate Interface [ISDN basic connection, supports S0 interface (with 4 wires, up to 8 devices connectable, up to 2 devices operating simultaneously), 2 * 64kb/s (B channels) and 1 * 16 kb/s (D channel)]
BRPM: Business Ressouce Planning Model
BS: Base Station
BSC: Base Station Controller(1) [controlls a set of base stations, concentrates traffic to the MSC]
BSD: Berkeley Software Distribution [Unix specification]
BSDB: Business Services Data Base
BSI: Bundesamt fuer Sicherheit in der Informationstechnik (german) [Bonn, Tel. +49-228-9582-0, formerly: Zentralstelle fuer das Chiffrierwesen]
BSIC: Base Station Identity Code
BSN: Backward Sequence Number [part of MSU]
BSS: Business Support Systems(1)
BSSMAP: Base Station (Sub-)System Management Part
BSVCI: Broadcast Signalling VCI [part of ATM meta signalling cell, 2 Byte]
BSZ: Betriebsstellen-Schluesselzahl (German) [6 digits, e.g. 523300]
BT: British Telecom
BTN: Billing Telephone Number
BTS: Base Transceiver Station [GSM term for radio station between handset and BSC with a Cell diameter from 0.5 to 35km]
BTSM: Base Transceiver Station Management
BTX: Bildschirmtext (German)
BUS: Broadcast and Unknown Server
BV: Bearbeitungsvermerk (German)
BW: Bandwidth [part of ATM meta signalling cell, 1 Byte]

C

C: Cell loss priority field [1 bit field, part of ATM header, marks priority of transfered data]
C/I: Carrier over Interference ratio
CA: Client Application(1)
CAC: Call (or Connection) Admission Control [ATM term]
CAF: Core ATM Functions
CAG: Chemical Analysis Group [within HP]
CAI: Client Application Interface(1)
CAM: Common Access Method [programmatic interface between a host adapter (bus interface) and the operating system, used with SCSI and ATA]
CAN: Customer Access Network
CAP: Competitive Access Providers(1)
CAPI: Common ISDN API
CASE: Common Application Service Element
CAU: CAUse(1) [part of ATM meta signalling cell, 1 Byte]
CAUCP: Control Access Unit Control Program
CB: Channel Bank [e.g. used for TDM with T1 (1.5Mb/s) or E1 (2Mb/s) line]
CBC: Cipher Block Chaining [encryption standard]
CBDS: Connectionless Broadband Data Service [cell based public data transport network]
CBIS: Cincinatti Bell Information System
CBL: Client Business Leads
CBM: Client Business Manager
CBO: Commercial Business Organization [within HP]
CBR: Constant Bit Rate [vs. VBR]
CC: Country Code(1)
CC-NUMA: Cache Coherent Non-Uniform Memory Access [base of a consistent, binary compatible processor architecture, pioneered by Convex Computer Corporation, which HP acquired in December 95]
CCAF: Call Control Agent Function
CCB: Customer Care and Billing
CCBS: Customer Care and Billing System(1)
CCC: Credit Card Calling
CCCH: Common Control Channel
CCE: Consistency Check End [B-ISDN user part message]
CCEA: Consistency Check End Acknowledgement[B-ISDN user part message]
CCF: Call Control Function
CCI: Command Communicator and Interpreter(1) [in FMP1.1: module, which essentially supports two-way communication between NEs and the FMP server]
CCIS: Common Channel Interoffice Signaling [AT&T's name for its signaling subnetwork that transmits trunking control signals on a data link separate from message facilities]
CCITT: Commite Consultatif International Telegraphique et Telephonique [now: ITU-T, Internationaler beratender Ausschuss fuer den Telegrafen- und Telefondienst (German)]
CCL: Cambridge Consultants LGerman [developer of a multi-media communicating portable future device]
CCLA: Central CLock A [(German) Zentraltaktgeber A]
CCM: Customer Contact Manager [for building state-of-the-art customer service systems]
CCNC: Common Channel signaling Network Control
CCR: Consistency Check Request [B-ISDN user part message]
CCRA: Consistency Check Request Acknowledgement [B-ISDN user part message]
CCRSE: Commitment Concurrency and Recovery Service Element
CCS: Common Channel Signaling(1) [signaling method utilizing a separate path from the voice path]
CCSN: Common Channel Signaling Network
CCSS: Common Channel Signaling System
CCT: Controlled Cell Transfer [ATM term]
CCV: Credit Card Verification
CD: Call Deflection(1)
CDDI: Copper Distributed Data Interface
CDE: Common Desktop Environment [graphical user interface as well as development environment, ensures run time compatibility and portability at heterogenous unix systems, opposing MS Windows NT, designed by HP (HP VUE), IBM (IBM CUA), Novell (UnixWare Client Tools) and SunSoft (Open Look Deskset Tools), available in HPUX 10.10; replaces HP VUE]
CDF: Cumulative Distribution Function(1)
CDM: Computer District Manager
CDMA: Carrier Detects Multiple Access(1)
CDN: Corporate Data Network
CDPD: Cellular Digital Packet Data [wireless data networking protocol, suited for bursty data applications]
CDR: Call Detail Record(1)
CDS: Cell Directory Service [maintains a database of objects in a DCE cell and maps their (human readable) names to their identifiers and locations, which are used by programs to access the objects]
CDT: Connection-Dropping Threshold
CDV: Cell Delay Variation [influences transfer speed, ATM QOS parameter]
CDVT: Cell Delay Variation Tolerance [ATM QOS parameter]
CE: Computing Element [designator for a single independent processor in a cluster or multiprocessor system on which a separate operating system (e.g. UNIX) is running]
CEIR: Central EIR [in Dublin, contains "colour" list data about every piece of mobile equipment in circulation and details about their manufacturer, model, TAA and GSM operator]
CEN: (French) Comite Europeen de Normalisation
CEO: Chief Executive Officer [Vorstandsvorsitzender (German)]
CEPT: Conference Europeene des administration des Postes et des Telecommunications/Conference of European Postal and Telecommunication
CER: Cell Error Ratio [influences transfer accuracy, ATM QOS parameter]
CERN: Conseil Europeen pour la Recherche Nucleaire [founding institution for the WWW]
CERT: Computer Emergency Response Team [US federally funded]
CFB: Call Forwarding (on mobile subscriber) Busy(1)
CFMP: Cellular Fault Management Package
CFN: ConFusioN [B-ISDN user part message]
CFNRc: Call Forwarding on mobile subscriber Not Reachable
CFNRy: Call Forwarding on No Reply
CFP: Cordless Fixed Part [part of a cordless local loop]
CFRS: Concert Frame Relay Services [for connecting LANs with high bandwidths]
CFU: Call Forwarding Unconditionally
CGA: Carrier Group Alarm
CGI: Common Gateway Interface [a protocol specification for transfering parameters between HTML browsers, servers and external programs, e.g. for generating dynamic pages. A CGI Script is a program that is executed on a web server in response to a browser's request.]
CHAP: Challenge Handshake Authentication Protocol
CI: Communication Infrastructure(1) [part of OV DM, provides interoperable capability to SNMP and CMOT]
CIC: Circuit Identification Code [part of MSU, endpoint identifier]
CIDR: Classless InterDomain Routing [defined by RFC1519; address assignment and aggregation strategy]
CIF: Common Intermediate Format(1)
CIL: Components Integration Laboratories
CIM: Computer Integrated Manufacturing(1)
CIO: Corporate IT Organization
CIP: Channel Interface Processor(1)
CIR: Committed Information Rate [characterizes the average transfer rate in a frame relay network]
CIT: Computer Integrated Telephony [DEC's telecom platform]
CIX: Commercial Internet Exchange [backbone free of NFSNET restrictions, prompting widespread and more commercial throughput, predecessor of InterNet]
CK: Check Bit [part of MSU]
CKSN: Ciphering Key Sequence Number
CLASS: Custom Local Area Switching Service(1) [includes intra-LATA services such as call waiting, call blocking, automatic number identification (ANI), priority call, call trace, repeat call]
CLF: Carrier Line Failure
CLI: Command Line Interface(1) [part of OVw, user interface to maps, MIB or objects, alternative to GUI]
CLIP: Calling Line Identification Presentation [ISDN Service]
CLIR: Calling Line Identification Restriction [ISDN Service]
CLLC: Common Language Location identification Code
CLNAP: Connectionless Network Access Protocol [wide area cell based public data service]
CLNP: ConnectionLess Network Protocol
CLNS: Connectionless Network Server (or Service) [(German) Netzwerkvermittlungsdienst, bei dem Daten uebertragen werden, ohne dass vorher eine (logische) Verbindung ueber das Netz hergestellt wurde, OSI based]
CLP: Cell Loss Priority [field, part of ATM header, 1b]
CLR: Cell Loss Ratio [influences transfer dependability, ATM OQS parameter]
CLTD: CLock and Tones Distribution
CLTP: Connectionless Transport Protocol [(German) Transportprotokoll, bei dem der Datenaustausch ohne den Aufbau einer (logischen) Transportverbindung und ohne Flusskontrolle ablaeuft]
CM: Configuration Management(1)
CMAS: Cellular Management System [part of MAS]
CME: CM-Entity
CMIP: Common Management Information Protocol [OSI(1) Network Management Protocol; used by manager and agent processes to exchange management informationes the agent/manager paradigm to communicate management information between systems; differs from SNMP in that it is more rigorous, is designed for open systems, and is an association-oriented protocol, requiring the two communicating CMIP processes to establish an association before sending any management messages; defined in ISO standard 9596-2, vs. TCP/IP and SNMP]
CMIPDU: CMIP Data Unit
CMIS: Common Management Information Service [OSI(1) Network Management Service; enables management applications to communicate in the OSI environment; offers a set of services that provide for management operation, retrieval of information, and notification of network events]
CMISE: Common Management Information Service Entity (or Element) [set of management services and functions provided to applications for the transfer of management information, provides for selecting specific objects or groups of objects via scoping and filtering]
CML: Command ManuaL
CMO: Computer organization Marketing and Operations group [HP entity]
CMOT: CMIS Over TCP/IP [requires a light-weight presentation protocol to map from the application to transport layers]
CMR: Cell Misinseration Rate [influences transfer speed by out of sequence cells, ATM QOS parameter]
CMSDB: Call Management Services Data Base
CN: Corporate Network
CNC: CoNCentrator(1)
CNE: Certified Novell Engineer [Netware oriented]
CNI: Communications Network International GmbH [German group, wireline business, formed by Deutsche Bank (25%), Mannesmann (50%) and RWE (25%)]
CNM: Customer Network Management(1)
CNO: Computer News Online [published on ESP(2)]
CNR: Channel Number [e.g. in a ZD-A3]
CO: Central Office(1)
COBOL: COmmon Business Oriented Language
CoLP: Connected Line Identification Presentation
CoLR: Connected Line Identification Restriction [ISDN Service]
COM: Component Object Model [Wintel limited ...]
CONCERT: [MCI & BT subsidiary, provides the user (teleco companies) with a single interface to all telecommunication services and network hardware, "manager of managers", offers outsorcing by is GNS]
CONS: Connection Oriented Network Service [(German) Netzwervermittlungsdienst, der eine (logische) Verbindung ueber das Netzwerk etabliert, bevor Daten (mit Flusskontrolle) uebertragen werden]
COP: Character Oriented Protocol
CORBA: Common Object Request Broker Architecture [specifies mechanisms and interfaces for building distributed object oriented applications, defined by OMG, CORBA 2.0 based on UNO, vs. DCE]
COSE: Common Open Software Environment
COSS: Common Object Services Specification [part of OMA]
COT: Central Office Terminal
CP: Coordination Processor
CPBO: Consumer Products Business Organization [within HP]
CPCS: Common Part Convergence Sublayer [part of ATM payload segmentation or reassembly]
CPDE: Computer Products Distribution Europe [HP distribution center, based in Neuhausen nextto Stuttgart]
CPE: Customer Premise Equipment
CPG: Call ProGress(1) [B-ISDN user part message, used in the USA]
CPL: Corporate Price List
CPLC: Custom Product Life Cycle
CPM: Customer Premises Management(1)
CPO: Computer Products Operation
CPP: Calling Party Pays [charging method in wireless paging, e.g. with DeTeMobil's Scall service]
CPS: Concert Packet Service
CPSO: Channel Products worldwide Support Organisation [HP entity]
CPSS: Control Packet Switching System
CPT: Cooperative Programming Tool(1)
CPU: Central Processing Unit
CR: Carriage Return
CRADA: Cooperative Research and Development Agreement
CRC: Cyclic Redundancy Check(1) [part of ATM meta signalling cell, 10 Byte, also: part of a X.25 packet, added by sending node, checked by next receiving node, which also computes a new CRC. Frame relay computes the number only at the two end nodes]
CRS: Cell Relay Service [transport of cells between private local ATM networking equipment]
CRUD: Create Read Update Delete
CS: Connection Segment(1)
CSA: Connection Segment Associated
CSBU: Commercial System Business Unit [HP entity]
CSC: Computer Science Corporation [HP channel partner]
CSCW: Computer Supported Cooperative Work
CSD: Computer Services Delivery
CSDG: Computer Sales and Distribution Group [new HP computer sales organisation]
CSE: Cooperative Software Engineering
CSI: Colour Status Indicator(1)
CSM: Communications System Monitoring
CSMA: Carrier Sense Multiple Access
CSMA/CD: Carrier Sense Multiple Access with Collision Detect
CSNMS: Carrier Service Network Management Systems
CSO: Computer Systems Operation (or Organization)
CSPDN: Circuit Switched Public Data Network
CSPG: Cellular Service Provider Group [as part of FCS(2)]
CSPP: Computer Systems Policy Project [formed by CEOs of the 13 largest computer companies in the USA]
CSR: Customer Service Representatives [working e.g. at help desks or as consultants at customers' sites]
CSS: Cascading Style Sheets(1)
CSTA: Computer Supported Telecommunication Applications [ECMA standard, defining the communication between a PBX and a computer]
CT2: Second Generation Cordless Telephones [1st generation standard, with max. range of 300m around basestations without automatic hand-over, with 40 RF carriers * 1 duplex voice channel (=40 voice channels) per BTS, good for office locations, predecessor of DECT]
CTC: Cell Transfer Capacity [influences transfer speed, ATM QOS parameter]
CTD: Cell Transfer Delay [influences transfer speed, ATM QOS parameter]
CTD: Cambridge Technology Group [system consultant and integrator, founded by John Donovan]
CTI: Computer-Telephony Integration
CTIA: Cellular Telecommunications Industry Association
CTM: Cordless Terminal Mobility [interface]
CTR: Common Technical Regulation
CTS: Courier Time Server [synchronizes the time in a WAN with the GTS and other LTSs]
CTSG
CUA: Common User Access
CUG: Closed User Group
CUKEY: Closed User KEY [special key management for closed groups]
CUL: Client Unit Leader
CV: Code Violation
CVNS: Concert Virtual Network Service [Voice communication service]
CVPN: Concert Virtual Private Networks [IVPN service, launched by BT]
CW: Call Waiting [ISDN Service]

D

D-AMPS: Digital American Phone System [US-Standard, vs. GSM]
DA: Directory Assistance(1)
DAB: Digital Audio Broadcasting
DACS: Digital Access Cross-connect Switch (or System)(1) [switches TDM channels among T1 circuits connected to it]
DAM: DECT Authentication Module
DARPA: Defense Advanced Research Projects Agency
DAS: Dual Attached Station
DAT: Digital Audio Tape
DATEX-P: [X.25 network, provided by the Deutsche Telekom AG]
DAUA: Digital Announcement Unit A [(German) Digitalansage A]
DB: Data Base
DBC: Dynamic Buffer Cache
DBMS: Data Base Management System
DBP: Deutsche BundesPost (German)[German Federal Mail]
DBR: Deterministic Bit Rate [ATM term]
DC: Distributed Computing(1) [like DCE(1) or CORBA]
DCC: Digital Cross-Connect (system)(1) [Cross-Connector]
DCE: Distributed Computing Environment(1) [a suite of software that enables networked computers to share data and services efficiently and securely; recommended by OSF, vs. CORBA]
DCF: Data Communication Function
DCN: Data Communication Network [helps to connect various TMN components with one another, is used when various functional groupings are implemented remotely from others]
DCOM: Distributed Common Object Model
DCS: Data Collection Server(1) [e.g. part of FMP-4]
DCS-32: Data Collection Server with 32 RS-232 ports [part of FMP-4]
DCS-64: Data Collection Server with 64 RS-232 ports [part of FMP-4]
DCT: Digital Cordless Telephone(1)
DDD: Detailed Design Document(1)
DDL: Data Definition Language
DDN: Digital Data Network(1) [e.g. realized by HongKong Telecom]
DDNS: Dynamic Domain Name Service [by IBM's OS/2; cooperating with DNS]
DDS: Digital Data Storage [industry standard for recording computer data to a DAT]
DDSN: Digital Derived Services Network [AT&T's national IN provided for BT UK]
DDV: Datendirekt-Verbindung (German) [Festverbindung]
DE: Discard Eligibility(1) [bit, informing a frame relay switch about discarding that frame in an overload situation]
DECIX: Deutscher Commercial Internet Exchange [in Frankfurt]
DECT: Digital European (or Enhanced) Cordless Telecommunications [2nd generation cordless telephone standard, designed to be capable of supporting very high traffic densities (up to basic rate ISDN) by 10 RF carriers * 12 duplex voice channels per carrier (=120 voice channels) per BTS, at 1895-1906 MHz (private) and 1906-1918 MHz (public), with a proposed extension to a 30 MHz frequency band, with TDMA/TDD access technique, GMSK modulation technique, making it suitable for low mobility-high capacity, vs GSM900, concentrated usage environments such as city center offices and transport hubs, developed in Europe, see also PHS]
DEE: Datenend-Einrichtung (German)
DES: Discrete Event Simulation(1)
DF1: (German) Digitales Fernsehen 1
DFN: (German) Deutsches ForschungsNetz
DFS: Depth First Search(1)
DGPS: Differntial GPS
DHCP: Dynamic Host Configuration Protocol [advanced IP address management by dynamically assigning IP adresses from a given IP address pool to new hosts, based on BOOTP, defined in RFC1561. Currently no support of DNS entry updates]
DHSD: Duplex High Speed Data
DID: Direct Inward Dialing
DIDM: Distributed Internet Discovery and Monitoring [feature of HP OV NNM4.1]
DII: Dynamic Invocation Interface [allows a program to build a request to an object at run time]
DIS: Draft International Standard [as defined by ISO]
DLC: Digital Loop Carrier(1)
DLCI: Data Link Connection Identifier
DLU: Digital Line Unit [(German) digitale Teilnehmerleitungseinheit]
DM: Distributed Management [Platform or Element of OV, complete superset of SMNP platform]
DMC: Delivery Management Client(1) [PSO managing tool, To be released in Jan96]
DME: Distributed Management Environment [to be worked on by OSF]
DMI: Definition of Management Information(1)
DML: Data Manipulation Language
DMM: Distributed Management Module [optional extension to the HP AdvanceStack Hub-8U]
DMO: Direct Marketing Organization [HP entity]
DMS: Document Management System
DMTF: Desktop Management Task Force
DMUX: DeMUltipleXer
DMZ: DeMilitarized Zone [network segment accessible from the internet as well as from the intranet, close to a firewall system]
DN: Distinguished Name(1) [alias FDN]
DNA: Digital Network Architecture
DNBE: Datennetzbedieneinheit (German)
DNFS: Distributed Network File System
DNI: Digital Non Interpolation
DNS: Domain Name Server (or System or Service)(1) [maps system names to IP addresses; see also RFC 1956]
DOG: DECT Operators Group [association of DECT related companies]
DOI: Distributed Object Infrastructure
DOKRYPT: Datei Orientierte KRYPTologie (German) [Windows based software for digital signatures and encrypting functions]
DOD: Department of Defense
DOE: Distributed Objects Everywhere
DOMF: Distributed Object Management Facility
DP: Draft Proposal(1) [as defined by ISO]
DPC: Destination Point Code [part of MSU, Zielpunktcode (German)]
DPE: Distributed Processing Environment
DPM: Digital Performance Monitoring (system)
DPMS: Digital Performance Management System(1) [for monitoring PDH transmission networks]
DPP: Distributed PrePlan
DPP: Data Post Processing System
DPS: Distributed Print Service(1) [standard print spooling service across the entire networked enterprise; can work with hundreds of printers, spoolers, and clients; inntegrated in SAM; introduced with HP-UX10.20]
DQDB: Distributed Queue Dual Bus [OSI layer 1 and 2 of MAN standard,aka IEEE 802.6 standard]
DR: Distributed Restoration
DRA: Distributed Restoration Algorithms
DRAM: Dynamic Random Access Memory
DR: Disaster Recovery
DRP: Disaster Recovery Procedure
DRPM: Digital Radio Performance Monitor
DRS: Digital Reference Signal(1) [sequence of bits representing a 1004Hz to 1016Hz signal with a power level equal to one milliwatt]
DRTV: Direct Response TV
DRX: Discontinous Reception
DS: Data Server(1) (process) [e.g. running on IFMS's data collection servers]
DS1: Data Speed rate 1 (or Digital Signal (Level) 1)[1.544 Mbps, equivalent to 24 voice channels]
DS3: Data Speed rate 3 (or Digital Signal (Level) 3) [44.7 Mbps, equivalent to 28 DS1 signals or 672 voice channels]
DSA: Directory Server Agent(1) [responsible within the X.500 standard for the administration of hierarchical organized information (eg addresses); usually spread over a network]
DSAC: Dial Service Administration Center
DSC: [network switch manufacturer]
DSET: Distributed Software Engineering Tools [US company, offers GDMO Agent Emulator]
DSGA: Digital Signal Generator A
DSI: Detailed Spectrum Investigations(1) [as performed by ERO]
DSII: Dual Stream Instant Ignition [latest release as well as the previour release of the operating system will be available at the same time to a customer to choose, e.g. starting 01Jul95 HP-UX 9.07 and HP-UX 9.05PCO]
DSL: Digital Subscriber Line
DSM: Distributed Systems Management
DSN: Digital Switching Network [(German) Digitales Koppelnetz]
DSOM: Distributed System Object Model
DSP: Digital Signaling Processor
DSPM: DiSPlay Manager [of OpC]
DSPU: DownStream Physical Unit
DSR: Digital Satellite Radio
DSRR: [one of the coming pan-European services or standards]
DSS: Distributed Sample Scrambling [in physical layer in broadband communication]
DSS1: Digital Subscriber System No. 1 [European ISDN standard, will replace German standard 1TR6]
DSSR: Digital Short-range Radio
DSSSL: Document Style Semantics and Specification Language [extended SGML]
DTAP: Direct Transfer Application Part
DTC: Data(com) and Terminal Concentrator (or Controller) [HP product. Connects to RS232 lines]
DTD: Document Type Definition [see also SGML]
DTE: Data Terminal Equipment [e.g. a PC]
DTF: Digital Transmission Facility
DTI: Department of Trade and Industry
DTM: DeTeMobil [subsidiary of Deutsche Bundespost Telekom]
DTMF: Dual Tone Multi Frequency (signaling) [method for transmitting address pulses (and other signaling information), using a set of dual-tones to represent individual characters or numbers, vs. MF(2), used for signaling by station equipment like telephone sets]
DTP: Distributed Telecom Platform
DTR: Digital TRunk [(German) Digitalverbindungsleitung]
DTS: Distributed Time Service [service that synchronizes clocks on DCE hosts with each other and, optionally, with an external clock]
DTX: Discontinous Transmission
DUA: Directory Server Agent [responsible within the X.500 standard for the query of DSA initiated by users or applications]
DUP: Data User Part [used for circiutswitched data networks]
DVB: Digital Video Broadcasting
DVD: Digital Video Disc
DVMRP: Distance Vector Multicast Routing Protocol
DVPN: Domestic Virtual Private Network [as operated by VIAG INTERKOM]
DVV: DatenVerarbeitungsVerantworlicher (German)
DX: Digital Exchange
DXI: Data Exchange Information(1)

E

EA: Expert Advisor(1) [part of an expert system]
EAC: EIR Administration Center [UNIX based application that manages EIR data and interfaces with the CEIR]
EADAS: Engineering and Administration Data Acquisition System
EAM: Enterprise Architecture & Management
EAZ: (German) Endgeraeteauswahlziffer
EBAF: Extended(?) Bellcore Accounting Format [standard billing format]
EC: Event Correlator(1) [e.g. part of FMP(2)]
ECB: Electronic Code Book [encryption standard]
ECC: Embedded Communications Channel(1)
ECDL: Event Correlation Definition Language [used by ECS]
ECIS: European Committee for Interoperable Systems
ECMA: European Computer Manufacturers Association
ECS: Event Correlation Services [based on HPOpenView]
ECSA: Exchange Carriers Standards Association
ECSC: European Customer Support Center [HP customer organization, first contact for PC warranty questions; based in Amsterdam]
ECTRA: European Council of Telecommunications Regulatory Authorities
EDA: Electronic Design Automation [integrated design and simulation of electronical circuits and systems]
EDI: Electronic Data Interchange
EDIF: Electronic Design Information Format [a framework for the definition and exchange of electronic design data, including masks, circuits and test data]
EDIFACT: Electronic Data Interchange For Administration, Commerce and Transport [a collection of information exchange standards for international electronic transfer of specifications, orders and payments]
EDM: Enterprise Desktop Management
EDMS: Enterprise Desktop Management Services
EDP: Electronic Data Processing
EDSS1: European Digital Subscriber System number One [(German) fruehere Bezeichnung fuer das ISDN-Protokoll DSS1]
EDTV: Enhanced Definition TeleVision
EEBU: Extended Enterprise Business Unit [HP Entity]
EENS: European Enterprise Network Strategies
EERP: Extended Enterprise Resource Planning
EF: Enhanced Functions(1)
EFD: Event Forward Discriminator [object, created and managed by the EA(3). Each application or agent that is interested in receiving events creates an EFD. The EA(3) then uses these EFDs to determine where it should send incoming events. EFDs contain destination addresses of the interested applications or agents.]
EFF: Electronic Frontiers Foundation [privacy and security watchdog organization]
EGP: Exterior (or External) Gateway Protocol [used by all routers attached to the DDN(2), alternative to tcp or udp]
EGSM: Extended GSM
EH: Event Handler
EHPT
EIA: Electronic Industries Association
EIC: European Integration Center
EICD: External Interface Control Document
EIGRP: Enhanced Interior Gateway Routing Protocol [enhanced version of IGRP, developed by Cisco; uses the same vector algorithm and distance information as IGRP; convergence properties and operating efficiency have improved significantly, however]
EIP: Ethernet Interface Processor
EIR: Equipment Identification Register [maintained by the network operator]
EIRP: Equivalent Isotropic Radiated Power [(German) Guetemass eines Senders]
EISA: Extended Industry Standard Architecture
EISS: Europaeisches Institut fuer System-Sicherheit [located at the univerisity of Karlsruhe]
EL: Event Logger(1) [part of FMP(2)]
ELA: Event Log Agent [part of EMS]
ELAN: Emulated LAN
ELC: Education Life Cycle
EM: Element Management (or Manager)(1)
Expert Modifier(2) [part of an expert system]
Event Manager(3) [component of SNI(3) SMP(3)]
Enterprise Messaging(4)
EMBU: Enterprise Middleware Enterprise Unit [HP entity]
EML: Element Management Layer [see NML and SML]
EMLS: Event Message Logging System [error documentation and distribution system in Siemens IN]
EMML: Extended MML
EMN: EWSD-TMN
EMO: Electronic Mail Operation
EMS: Event Management Service(1) [part of OV DM, provides a mechanism to collect, log and route SNMP or CMIS events in a multivendor network] /
Element Management System(2) [helps to manage individual devices like modems or routers tied to corporate networks and can support an industry standard for device mgmt. Can also manage services (e.g. inbound and outbound calling services) and provide realtime info about faults, Trouble Tickets, performance and problem resolution. For a class of managed objects]
EMT: European Management Team [led by Franz Nawratil]
ENM: EWSD Network Management
ENM/OS: ENM/Operating System
ENS: Enterprise Network Strategies
EoB: End of Bus
EOC: Embedded Operations Channel
EOCC: European OSS Competence Circle
EOS: Electronic Output Strategies
EPHOS: European Procurement Handbook for Open Systems [(German) Europaeisches Beschaffungshandbuch]
EPPA: European Public Paging Association
EPS: Enterprise Parallel Server
EQN: Extended Queuing Network
ERB: Editorial Review Board
ERBIS: (German) Einheitliches Rechnergestuetztes BetriebsInformationSelement
ERC: European Radiocommunications Committee [of the CEPT]
ERMES: European Radio MESsaging [GSM-based paging, 2nd generation standard]
ERO: European Radiocommunications Office [permanent organ of the ERC of the CEPT, located in Copenhavn, has the objective of developing proposals for a European Table of Frequency Allocations and Utilisations for the band from 29.7 Mhz to 105 GHz]
ERP: Effective Radiated Power
ERS: External Reference Specification [specifying (programmatic) user interfaces]
ES: Errored Second
ES-IS: End System to Intermediate System
ESA: Event Sieve Agent(1) [part of EMS]
ESBU: Enterprise Systems Business Unit [HP entity]
ESC: Engineering Service Circuits
ESG: Enterprise Server Group
ESIG: European SMDS Interest Group
ESIOP: Environment Specific Interoperability Protocol [part of CORBA 2.0]
ESM: Enterprise System Management(1)
ESMR: Extended Specialized Mobile Radio
ESN: Electronic Serial Number [of e.g. a mobile handset, see also MIN]
ESO: Enterprise Solution Organization
ESP: Enhanced Service Provider(1)
ETC: Enhanced Throughput Cellular [wireless data access protocol, developed by AT&T Paradyne]
ETD: Electrical Time division Demultiplexer
ETDM: Electrical Time Division Multiplexing
ETIS: European Telecommunications Informatics Services [telecom service provider consortium; one of the founders of SPIRIT]
ETM: Electrical Time division Multiplexer
ETNS: European Telephony Numbering Space
ETO: European Telecommunications Office [organisation, located in Kobenhavn (Denmark), providing standardised application procedures for companies wanting to offer new services in their local countries]
ETS: European Technical Standard [as convergence layer]
ETS300640: ETS for "Golden Numbers" [confirms the standard key pad layout into four rows of three with the numbers running from left to right from 1 to 9 and then *, 0, # on the bottom row; it then assigns alphabetic letters to the keypad numbers; the 1 has no letters assigned; the 2 gets a, b, c; the 3 d, e, f; and so on with three letters each until the 7, which gets p, q, r, s; the 8 gets t, u, v and the 9 w, x, y, z.]
ETSI: European Telecommunications Standardisation (or Standards) Institute
EUTELSAT: EUropean TELecommunications SATellite organization
EVE: European Videophone Experiment
EVUA: European VPN Users Association [group of multinational companies, founded by Rank Xerox and ICI]
EWOS: European Workshop for Open Systems [(German) Organisation, in der Hersteller und Anwender von offenen Systemen (gefoerdert von der Europaeischen Kommission) Vorschlaege fuer Profilnormen erarbeiten]
EWS: Engineer Work Station
EWSD: Elektronisches WaehlSystem Digital (German) [Siemens system]
EWU: EntWicklungsUmgebung (German)
EZ: EntwicklungsZentrum [(German), operated by the German Telekom, 5 sites]

F

FAC: Final Assembly Code
FACCH: Fast Associated Control Channel
FAQ: Frequently Asked Questions
FAS: Frame Alignment Signal
FBC: FeedBack Control [ATM term]
FBS: Fernbedien- und Steuerbaugruppe (German)
FCAPS: Fault Configuration Accounting Performance Security
FCC: Federal Communications Commission
FCCH: Frequency Correction Channel
FCI: Fibre Channel Interface [155mb/s]
FCS: Frame Check Sequence(1)
FD-SCSI-2: Fast/Differential implementation of SCSI-2 [10MB/sec, up to 7 devices]
FDCT: Forward Discrete Cosine Transformation
FDD: Frequency Division Duplex
FDDI: Fiber(optic) Distributed Data Interface [ANSI standard for high speed LANs, based on fibre optic, works on a double token ring technology, vs. ATM/B-ISDN]
FDM: Frequency Division Multiplex
FDMA: Frequency Division Multiple Access [used by existing cellular systems by dividing the total band allocated to a cellular operator (25MHz) into discrete channels of a bandwidth of 30 kHz each. With 833 channels available and each conversation requiring two channels, 416 pairs of frequency are available to each operator, cheaper than TDMA or CDMA]
FDN: Fully Distinguished Name [a unique sequence of RDNs, constructed by traversing a containment tree from the root to an object instance, aka MOI]
FD SCSI-2: Fast/Differential implementation of SCSI-2 [10MB/sec, up to 7 devices, used only on older workstations]
FE: Fault Event
FEA: Front End Agent [part of FMP(2)]
FEBE: Far End Block Error
FEC: Forward Error Correction [error correction method in the GSM standard]
FECN: Forward Explicit Congestion Notification [notifiying bit, informing the next frame relay switch]
FEFA: Far End Failure
FEIP: Fast Ethernet Interface Processor
FEP: Front End Processor [(German) Kommunikationsrechner]
FER: Frame Erasure Rate [(German) Rahmenfehlerquote]
FFM: First Failure to Match
FHSS: Frequency Hopping Spread Spectrum
FIB: Forward Indicator Bit [part of MSU]
FIFO: First-In, First-Out
FIP: FDDI Interface Processor
FIPS: Federal Information Processing Standard [(German) von NIST verabschiedetes Standardisierungsdokument fuer die Verwendung von IT in der US-amerikanischen Bundesverwaltung]
FIPS60: Federal Information Processing Standard 60
FIRP: Federal Internetworking Requirements Panel [(German) hochrangiges, von NIST eingesetztes Gremium, das Strategien im Bereich offener Netze, Verwendung von Standards etc. in der US-amerikanischen Bundesverwaltung erarbeitet]
FISU: Fill In Signal Unit [Fuellzeicheneinheit (German)]
FITL: Fibre In The Loop
FLS: Fault Logging System
FM: Fault Management
FMAC: Facility Maintenance and Administration Center
FMAS: Facility Management System [part of MAS]
FMC: Funnel Management Client [PSO managing tool, tracks leads thru the funnel until a deal is either won or lost. To be released in Jan96]
FMO: Future Mode of Operation
FMP: Fault Management Platform(1) [developed by SNO]
FMP-1: FMP Single Server Solution
FMP-4: FMP Multiple Server Solution [split between main FMP server and data collection servers]
FMS: FM Solution
FN: Frame Number
FOI: Field Of Interest [such as BITA, EERP, CSD, TINSD, ITSM, EM, ITI and EDMS]
FOIRL: Fiber Optic InterRepeater Link [industry standard for optical fiber products, replaced by 10Base-FL]
FOT: FOrward Transfer(1) [B-ISDN user part message]
FOTS: Fibre Optics Transmission Systems [electro-optical converter]
FP: Fixed Parts
FPH: FreePHone
FPLMN: Foreign Public Land Mobile Network [vs. HPLMN]
FPLMTS: Future Public Land Mobile Telecommunications Systems [1885-2025 and 2100-2200 Mhz, for global mobile services, with satellite components in the top 14Mhz of each band, ITU recommendations planned to be stable 1997-1998]
FPM: Field Project Management
FR: Frame Relay [new packet switching technology, 56kb/s to 1.5Mb/s, data packets only]
FRF: Field Registration File [possible source for field definition in OVw]
FRSU: Fixed Radio Subscriber Units [component of WiLL]
FS: Functional Specification
FSB: For Small Business
FSBU: Financial Services Business Unit [HP entity]
FSIP: Fast Serial Interface Processor
FSL: File System Layout
FSM: Finite State Machine
FSN: Forward Sequence Number [part of MSU]
FT: Fault Ticket(1)
FTAM: File Transfer Access Method (or and Management) [(German) "ftp" auf OSI(1) Application Services, interactive file transfer]
FTC: Federal Trade Commission [US antitrust authority]
FTMI: France Telecom Mobiles Internationale [France Telecom subsidiary]
FTP: File Transfer Protocol [TCP/IP based protocol for transferring files, Internet standard]
FTTB: Fibre to the Building [optic fibre network concept]
FTTC: Fibre To The Curb [optic fibre network concept]
FTTH: Fibre To The Home [optic fibre network concept, up to endusers]
FTZ: (German) Forschungs- und TechnologieZentrum
FWD SCSI-2: Fast/Wide/Differential implementation of SCSI-2 [20MB/sec, up to 15 devices]

G

GAP: Generic Access Protocol
GBR: General Business Release [e.g. HP-UX 10.0 version B.10.01, to be released July 95]
GCF: Generic Command Facility
GCRA: Generic Cell Rate Algorithm [ATM term]
GDMO: Guideline for Definition of Managed Objects [defines standard templates describing managed Object Classes and their services with their attributes, notifications, behaviors operations and actions supported by the managed object, defined by X.722/ISO 10165-4, a more complex object specification language than e.g. Concise MIB or Common OV]
GDS: Global Directory Service [maintains a database of objects that may exist anywhere in the world and enables DCE programs to access objects outside a cell]
GDSC: GSM DECT Site Controller [handling the control of DRS(2)s]
GDSS: Group Decision Support Systems
GEA: Gigabit Ethernet Alliance
GEMS: Generic Element Management Solution [formerly aka INMS]
GEO: Geostationary Earth Orbit [36000 km above ground]
GFC: Generic Flow Control [field, 4 b, part of ATM header, used by UNI]
GfD: Gesellschaft fuer Datenfunk [German consortium for mobile data services]
GFLOPS: Giga FLoating point OPerations per Second
GFO: German Field Organization [within HP]
GFRI: Global Formation and Regional Implementation team [within HP]
GGT: Global Governance Team
GIBN: Global Interoperability of Broadband Networks [international platform for the support of common research and development projects, in telemedicine, telelearning and industrial telecooperation]
GIF: Graphics Interchange Program [supported by CompuServe, Inc., based on LZW]
GII: Global Information Initiative [launched by the G-7 ministers, at a meeting in Brussels, Belgium, February 25, 1995]
GIOP: General Inter-ORB Protocol
GIP: Global Internet Project
GKV: (German) GeschaeftsKundenVertrieb
GLASS: GLobally AcceSsible Services
GLR: Global Location Register
GMSC: Gateway MSC
GMSK: Gaussian Minimum Shift Keying [Characteristics of the GSM modulation]
GMT: GDMO Modeling Toolkit
GNE: Gateway Network Element
GNIM: Generic Network Information Model
GNS: Global Network Service [see CONCERT]
GOD: Global Operations Directorate [based on an integrated manager system, managing agents on different vendor devices]
GOS: Grade Of Service
GOSIP: Government OSI Profile [government procedure Guidelines that mandate OSI(1) products from vendors]
GPDS: General Packet Data Service
GPRS: General Packet Radio Service
GPS: Global Positioning System
GPSy: Global Product and pricing System
GPT: GEC Plessey Telecommunications [UK based company; owned 60% by GEC and 40% by Siemens]
GSDN: Global Software Defined Network [ AT&T's VPN]
GSM: Global System for Mobile communications [originally: Groupe Speciale Mobile, pan-European ISDN compatible digital cellphone standard (low capacity-high mobility system, vs. DECT), frequency bands: 905-914 Mhz, 950-959 Mhz, on demand 890-915 Mhz and 935-960 Mhz, 2nd generation standard, phase 2+ implementations: hi speed data transmission (19.2 up to 64 kb/s), generalised packet radio services, GSM900/DCS1800 dual-band operation, interworking between GSM900 and DECT, and CCBS(2), w/w 130 operators (Jan96)]
GSS: Generic Security Standard
GTS: Global Time Server [provides time in a DCE cell]
GTT: Global Title Translation
GUI: Graphical User Interface [part of OVw, e.g. X-Windows, prefered alternative to CLI]
GVPN: Global VPN
GW: GateWay
GWL: GateWay Links

H

HA: High Availability
HAL: Hardware Abstraction Layer [integrated in MS(3)'s Windows NT]
HAS: (German) HauptAnSchluss
HBCI: Home Banking Computer Interface
HDB: Home Data Base
HDLC: High Level Data Link Control [standardized synchronous securing method]
HD-MM CD: High Density MultiMedia CD [developed by Sony/Philips, data storage capacity 7.4 GB or up to 270 minutes video (MPEG 2)]
HDSL: High-bitrate Digital Subscriber Line [with bitrates of 2Mb/s, over symmetrical double copper wires]
HDTTS 50: High Density Thumb Screw, 50 pin
HDTTS 68: High Density Thumb Screw, 68 pin
HDTV: High Definition TeleVision
HEC: Header Error Control [field, part of ATM header, 8b]
HEMS: High Level Entity Management System
HFC: Hybrid Fiber Coax
HFS: Hierarchical File System
HIP: HSSI Interface Processor
HLC: High Layer Compatibility
HLC: High Layer Compatibility
HLD: High-Level Design
HLM: Heterogenous LAN Management
HLP: High Level Parser [in FMP1.1: part of the DC(2), parses events to identify header, footer and the event list]
HLR: Home Location Register [database, contains permanent subscriber information]
HMA: Human Machine Adaption [performs the conversion from the MAF information model to the information model presented by the TMN to the PF by masking some dat, adding information and reorganizing the whole; also supports authentication and authorization of users]
HMMP: HyperMedia Management Protocol [protocol for accessing components of the HMMS; allows object-oriented access to managed objects; not to be used directly with web browsers, but as the communications mechanism between components within a management environment.]
HMMS: HyperMedia Management Schema (or Services) [schema for storing management information; easily extensible; developed by MicroSoft]
HMP: Host Monitoring Protocol
HMOM: HyperMedia Object Manager [component of NetPC platform management information technologies]
HO: Hand Over [e.g. of a voice channel between a mobile phone and one BTS to the next BTS]
HoB: Head of Bus
HP: Hewlett Packard
HPC: High Performance Computing (or: Computer)
HPLMN: Home Public Land Mobile Network [vs. FPLMN]
HPR: High Performance Routing
HPSL: HP Support Line
HR: Human Ressources
HRTF: Head Related Transfer Function [within VR]
HSC: High Speed Connect
HSCSD: High Speed Circuit Switched Data
HSD: High Speed Data
HSM: Hierarchical Storage Management
HSMR: Hourly Status Message Report
HSN: Home Shopping Network(1) [US-Teleshopping channel]
HSSI: High Speed serial Interface [DXI interface, in broadband communication]
HTML: HyperText Markup Language [key specification of WWW, see also URL, HTTP and RFC 1942]
HTTP: HyperText Transfer Protocol [key specification of WWW, see also URL, HTML, RFC 1945]

I

IAA: IAM Acknowledge [B-ISDN user part message]
IAB: Internet Activities (or Architecture) Board [governing body of the Internet, decides about e.g. standards]
IAHC: Internet Ad Hoc Committee
IAM: Initial Address (Message)(1)
IAR: IAM Reject [B-ISDN user part message]
IAT: Inter Arrival Time [(german) Zeit zwischen der Ankunft zweier ATM-Zellen einer Verbindung]
IBS: Intelsat Business Service
IBT: International Business Traveller(1) [target market for MSS]
IC: Interexchange Carriers(1) [see IXC]
ICCS: Integrated Communications Cabling System [offered by SIEMENS]
ICD: International Code Designator
ICE: Intergrated Capacity Expansion
ICF: Information Conversion Function(1) [used in intermediate systems to translate the information model at one interface into the information model at the other interface, see CCITT Rec. M.3010]
ICI: Inter-Carrier Interface
ICIP: Inter-Carrier Interface Protocol
ICMP: Internet Control Message Protocol [part of IP for handling errors and control messages, eg ping]
ICO: Intermediate Circular Orbit [for MSS, aka MEO]
ICOEM: IC(3)OEM
ICP: Independent Content Provider
ICS: Intuitive Command Structure
ID: IDentifier
IDCT: Inverse Discrete Cosine Transformation
IDE: Integrated Development Environment
IDL: Interface Definition Language [defined by OMG (CORBA IDL), declaratory and more complex object specification language than e.g. Concise MIB or Common OV]
IDLC: Integrated Digital Loop Carrier
IDN: Integrated Digital Network(1)
IDNX: Integrated Digital Network eXchange
IDR: Intermediate Data Rate
IDSG: Intelligente DatenSichtGeraete (German) [now: PCs]
IE: Internet Explorer [by MS(3)]
IEC: International Electrotechnical Commission(1) [see further information]
IET: Instant Electronic Translation [future automatic high level language translation capability]
IETF: Internet Engineering Task Force [subgroup of IAB, investigates and solves technical problems, makes recommondations to the IAB, see also IRTF]
IF: Intermediate Frequency
IFC: Internet Foundation Class
IFF: Identification Friend or Foe
IFMP: Interfacer to FMP Server
IFMPS: Interfacer to FMP Server [in FMP1.1: module in the MD, which sends alarms to the IMD module. Supports bidirectional communication to IMD]
IFU: Instruction Fetch Unit
IGES: Initial Graphics Exchange Specification [Definition of a neutral file format for interchange of 2D and 3D CAD information via indivually created translation programs]
IGMP: Internet Group Management Protocol
IGOSS: Industry/Government Open Systems Specification [(German) gemeinsame OSI-Beschaffungs- und Betriebsspezifikationen der US-amerikanischen Regierung, der MAP/TOP-Gruppe und der amerikanischen Stromversorgungsunternehmen]
IGRP: Interior Gateway Routing Protocol [designed by Cisco; monitors the network to determine the status of each route and selects the best route for each data packet]
IIP: Internet Imaging Protocol [developed by Eastman Kodak, Live Picture, Microsoft and Netscape; evaluation software available]
IIOP: Internet Inter-ORB Protocol [part of CORBA]
IKMP: Internet Key Management Protocol
IKZ: (German) ImpulsKennZeichen [traditional method of dual frequency switch control protocol]
ILMI: Interim Local Management Interface [service, enables control of ATM devices and mgmt of a network]
IM: Inventory Management
IMACS: Integrated MAnufacturing Control System
IMD: Interfacer to Mediation Device [in FMP1.1: module in the FMP server, which receives the alarms from the IFMPS module. Supports bidirectional communication to IFMPS]
IMEI: International Mobile Equipment Identity [to be checked against the EIR to avoid fraud]
IMSI: International Mobile Subscriber Identity
IMT2000: [see UMTS]
IMTS: Improved Mobile Telephone Service
IN: Intelligent Network [provides collect calls, 800 numbers, VPN and digital cellphone systems, based on SS7 to transfer information]
INA: Information Network Architecure [platform which integrates TMN technologies with DC technologies, specified by Bellcore]
INAP: Intelligent Network Application Part [protocol, ETSI Interconnection Standard]
INCL: Intelligent Networked Computing Laboratory
IND: Information Networks Division [part of STG]
INE: Intelligent Network Element
INI: Inter Network Interface
INM: Integrated Network Monitoring
INMARSAT: INternational MARitime SATellite organisation
INMS: Integrated Network Management System [composed of FMP, NPR and ARS]
INS: Intelligent Network Systems(1)
INTELSAT: INternational TELecommunications SATellite organization
INTUG: International Telecommunications Users Group
IOR: Interoperable Object References
IP: Intelligent Peripherals(1) [adjunct to an SCP, plays recorded announcements to the caller to get more infos from digit dialling or voice recognition]
IPC: Inter-Process Communication [e.g. as used by EMN]
IPF: Information Processing Function
IPI: Internal Programming Interface [used by EMN]
IPMH: InterProcess Messaging Handling [part of NetExpert (OSI(2) product)]
IPng: Internet Protocol Next Generation [eg. based on an addressing schema with 16 Byte/address, or 1564 addresses/squaremeter on earth surface]
IPP: Internet Printing Protocol [suggested by IETF]
IPRA: Internet PCA Registration Authority
IPSEC: Internet Protocol SECurity (working group)
IPSIT: International Public Sector IT(1) group [formed by government officials responsible for communication]
IPSP: IP Security Protocol [supports host-to-host security, and subnet-to-subnet and host-to-subnet topologies]
IPv6: Internet Protocol Version 6 [aka IPng]
IPX: Internet Packet Exchange (protocol)
IRB: Instruction Reorder Buffer
IRC: Internet Relay Chat
IRDA: InfraRed Data Association [defined a standard for wireless local data exchange, up to 115.2 kbd, HP originated, detailed information]
IRTF: Internet Research Task Force [subgroup of IAB, see also IETF]
IRV: Initial Repeat Value
IS: International Standard [as defined by ISO]
IS-41: US Mobile Architecture
IS-54: US TDMA Standard
IS-95: US CDMA Standard
IS-IS: Intermediate System to Intermediate System protocol [ISO dynamic routing protocol]
ISD: Internet Security Division(1) [HP entity]
ISDN: Integrated Services Digital Network [basic rate: 2*64kb/s bearer channel (B) + 1*16kb/s for establishing connection (D), primary access: 30*64kb/s (B) + 1*64 kb/s (D), diensteintegrierendes digitales Fernmeldenetz (German), detailed description]
ISL: Inter Satellite Links
ISMS: Integrated Service Management System [platform for different EMSs(2) to communicate with each other, e.g. AT&T's Accumaster Workstation or MCI's INMS]
ISN: Internet School Networking (group) [see also RFC 1941]
ISO: International Standards Organisation(1) [with a standardization process flow from DP(1) to DIS to IS. See further information]
ISP: International Standardized Profile(1)
ISS: Internet Security Scanner
ISSI: Inter-Switching System Interface [(german) Schnittstelle zwischen zwei SMDS-Switches innerhalb eines LATA]
ISSIP: Inter-Switching System Interface Protocol
ISSL: Internet and System Security Lab [HP lab]
ISUP: ISDN User Part [provides ISDN call setup and control, harmonized to work with ISDN access protocol]
ISV: Independent Software Vendor [aka VAB]
IT: Information Technology(1)
ITA: IT AdminCenter [ Detailed information]
ITC: Information Technology Center (Europe) [umbrella for the three HP Customer Centers in Grenoble, Brussels and Boeblingen, for internal European IT customers]
ITF: Information Transport Function
ITG: Internet Technology Group [HP entity]
ITI: IT Infrastructure
ITO: IT Operation [HP application incorporating HP's industry leading network management platform, HP OpenView Network Node Manager (NNM 4.1) and HP OpenView OperationsCenter. Detailed information]
ITP: Integrated Technology Planning
ITSM: IT Service Management
ITT: Invitation To Tender [Angebotsaufforderung (German)]
ITU: International Telecommunication Union
ITU-T: International Telecommunication Union - Telecommunications (Standardization) [formerly: CCITT]
ITU-TC: International Telecommunication Union - Telecommunications Committee [formerly: CCITT]
IVMO: Initial Value of Managed Object
IVoD: Interactive Video on Demand
IVPN: International Virtual Private Networks
IVR: Intelligent Voice Recognition(1)
IVS: Informations-Verarbeitungs-Service (German) [operated by the german Telekom, 134 sites, controlling up to 20 UNIX-Server each, monitored by SCZ]
IWG: HP OpenView Integration Working Group
IWS: Integrated Workflow Services
IWU: (LAN) Interworking Unit [device for interconnecting LANs, e.g. bridge or router]
IXC: Interexchange Carriers Inter-Exchange Companies [long line companies, e.g. in the USA (w marketshare): AT&T (65%), MCI (18%) or Sprint(10%), contrast and complement Local Exchange Companies (LEC)]
IuK: Informations- und Kommunikationstechnik(en) (German)

J

JAD: Joint Analysis and Design
JCG: Joint Coordination Group
JDBC: Java DataBase Connectivity [interface definition for a database - application communication, based on Java classes, SQL commands etc., see also ODBC]
JDC: Japan Digital Cellular [used by all service providers in Japan, with two frequencies around 800MHz and 1.5GHz]
JDK: Jaja DeveloperKit
JEPI: Joint Electronic Payment Initiative
JFS: Journaled File System [aka LFS]
JIT: Just In Time
JITT: Just In Time Training [at the workspace, using multimedia technology]
JMAPI: Java Management API [from SUN]
JPEG: Joint Photographic Experts Group [ISO standards committee, also a method of file compression and a graphics file format. See further details]
JRTS: Java Run Time System [an implementation of JVM for a specific platform, i.e. hardware]
JTAM: Job Transfer And Management
JTC: Joint Technical Committee
JTC 1: Joint Technical Committee 1 [(German) gemeinsamer Ausschuss von ISO und IEC, der speziell fuer Normung im Bereich der Informationstechnologie zustaendig ist]
JTM: Job Transfer and Manipulation
JVM: Java Virtual Machine

K

KB: Knowledge Based
KDC: Key Distribution Center [installed at a Kerberos server system]
KDP: Kansai Digital Phone Co. [in Osaka, Japan]
KDS: Key Distribution Service [part of the DCE security service]
KIT: (German) Kernsoftware fuer Intelligente Terminals [improved BTX standard]
KMC: Key Management Center [part of a central security facility for key generation and distribution]
KSP: K-Successively-Shortest Link-Disjoint Path

L

LA: Location Area [typically a bundle of neighboured BTSs]
LAC: Local Area Communications
LAL: Log Access Library [internal module, developed for the HP OV DM 4.1 Event Mgmt system, for developing custom log retrieval modules]
LAM: Lobe Access Module
LAN: Local Area Network
LANE: Local Area Network Emulation [LAN emulation on a ATM network]
LAP-B: Link Access Procedure - Balanced
LAP-D: Link Access Procedure - ? [access method within ISDN for level 2 of the OSI model]
LAPD: Link Access Protocol for the D channel
LATA: Local Access and Transport Area [(german) Gebiet, in dem ein Telekommunikationsanbieter Dienste offeriert]
LC: Local Currency
LCN: Local Communication Network
LCP: Link Control Protocol [a Data Link Connection]
LCS: Large Computer Strategies
LCSN: Local Computer Services Network
LDAP: Lightweight Directory Access Protocol [describes easy access by clients to X.500 services; see also RFC 1959]
LDBL: Low Density Bail-Lock [50 pin]
LDC: Long Distance Carrier [in USA; AT&T, MCI, Sprint]
LDS: Local Digital Switch
LE: Layer Entity(1)
LEC: Locale Exchange Carrier(1) [handle local call switching, complemented by LDCs]
LECS: LAN Emulation Configuration Server
LEN: Line Equipment Number
LEO: Low Earth Orbiting (satellite) [as used in IRIDIUM (780 km), TELEDESIC (700 KM), GLOBALSTAR (1400 km), in general: 700 to 2000 km above ground]
LES: Land Earth Station(1) [for MSS, e.g. Inmarsat relay stations]
LF: Login Facility(1) [part of the DCE security service]
LFS: Log structured File System [transaction oriented file system; similar to JFS]
LGI: Logistics Group International [one of 3 German CPO distribution companies]
LHS: Left-Hand Side
LI: Length Indicator [part of MSU]
LIDB: Line Information Data Base
LIP: Line Interconnection Point
LLA: Link Level Access(1)
LLC: Logical Link Control(1) [based on IEEE 802.2]
LLP: Low Level Parser [in FMP1.1: formatter, parses events to identify the message class]
LLR: Local Location Register
LME: Layer Management Entity
LNB: Low Noise Block converter [transposes satellite into wire frequencies]
LOB: Lines Of Business
LOF: Loss Of Frame
LOS: Line Of Sight [surveying method for mobile communication]
LP: Linear Programming(1)
LPO: Logical Post Office
LRF: Local Registration File [OV background process oriented]
LS: Lock Server [used by EMN]
LSG: Laserjet Solutions Group [HP entity]
LSS: Large Storage Systems
LSSGR: Lata Switching Systems Generic Requirements
LSSU: Link Status Signal Unit [Zeichengabestreckenzustandszeicheneinheit (German), part of SS7]
LSZ: Leitungsschluesselzahl (German) [3 digits, part of LTGBEZ]
LTE: Line Terminating Equipment
LTG: Line/Trunk Group [Anschlussgruppen (German)]
LTGBEZ: Leitungsbezeichnung (German) [40 digits: 4d LSZ, 16d Ordnungsnummer, 10d BSZ-A, 10d BSZ-B]
LTS: Local Time Server [provides time in a LAN]
LTU: Licence To Use
LU: Logical Unit
LVM: Logical Volume Manager
LWG: Logical Work Group
LWL: LichtWellenLeiter (German)
LZW: Lempel Zev Welch [compression technology]

M

M: Mandatory(1)
M-BRI: Mixed Basic Rate Interface
MA: Map Application(1) [part of FMP(2)]
MAC: Media Access Control(1)
MAF: Management Application Function [implements actually TMN management services, act in the role of a manger or agent, see CCITT Rec. M.3010]
MAIO: Mobile Allocation Index Offset
MAN: Metropolitan Area Network [based on IEEE 802.6 standard, 1.5Mb/s to 140 Mb/s]
MAP: Multiplexsystem-Anpassungsschaltung (German)(1)
MAPDU: Management Application Protocol Data Unit
MAS: Management Application Systems [parts of TMOS]
MASC: Mobitex ASynchronous Control(1) [protocol for data transmission in the Mobitex packet radio network]
MAU: Media Attachment Unit(1)
MBD: Management By Delegation
MBS: Maximum Burst Size(1)
MC: Maintenance Center(1)
MCC: Mobile Country Code
MCR: Minimum Cell Rate [ATM term]
MCSE: Microsoft Certified Systems Engineer [Windows NT oriented]
MCF: Message Communication Function(1) [allows connection to a DCF provided by the DCN]
MCI: [MCI does not stand for anything. MCI got its start as a microwave communications system for long-haul truckers, and many people think the acronym stands for Microwave Communications Incorporated. But it really does not stand for anything, and never has. US LDC](1)
MCID: Malicious Call IDentification [ISDN service feature]
MCIF: Miniature Card Implementers Forum [with members such as HP, Compaq, Fujitsu, Intel, Microsoft, Nokia, Philips and Sharp; working on specifications for new cards about a quarter the size of current PC cards]
MCMF: MultiCommodity Maximum Flow
MCP: [block-based] Motion Compensated Prediction [used by MPEG]
MCS: Midrange Computing Strategies
McCoI: Multimedia communications Community of Interest
MD: Mediation Device(1) [computers, which mediate between "old" switching equipment and new IN services by adapting from proprietory to standard interfaces, by converting to a common information model or by offloading of management functions from OS (like buffering, filtering, local archival or security), in FMP1.1: functional block which collects events from NEs, formats them and sends them to the FMP server for further processing]
MDACS: Modular Digital Access Control System
MDC: Mediation Device Communicator [in FMP1.1: module in FMP server, which allows offline and online configuration of MDs, DCs and equipment]
MDF: Main Distribution Frame
MDIS: Mobile Data Intermediate System
MEO: Medium Earth Orbit [as used in INMARSAT-P (10354 km), in general: 6000 to 20000 km above ground]
MF: Mediation Function(1) [routes and/or acts on information passing between standardized interfaces like an OSF and an NEF (or QAF) to ensure that the information conforms to the expectations of the function block attached to the MF]
MFLOPS: Mega FLoating point OPerations per Second
MHS: Message Handling System [X.400, OSI compliant email]
MHX: [Mobitex (German) egionalvermittlungen]
MHX1: [Mobitex (German) Hauptvermittlungen]
MIA: Multivendor Integration Architecture [internal program of NTT to reduce cost of ownership of IT equipment]
MIB: Management Information Base [collection of object definitions in a virtual storage, specifies the management variables which are conceptually organized as a tree, with e.g. an (Internet containing) subtree like iso(1).org(3).dod(6).internet(1).mgmt(2).mib-2(1).system(1) or 1.3.6.1.private(4).enterprises(1).hp(11).nm(2).system(3).hpux(2) .hp9000s700(5), can be defined by standards bodies such as IETF MIB-II or by specific vendors as enterprise-specific MIB]
MIC: Management Integration Consortium
MIF: Management Integration Format [s.also DMTF/DMI]
MIM: Management Information Model
MIME: Multipurpose Internet Mail Extension protocol [spcifications for dedicated document types; email extensions for transferring non-text files, eg. graphics, audio, faxes]
MIN: Mobile phone Number [of e.g. a mobile handset, see also ESN]
MIP: Multichannel Interface Processor
MIPS: Million Instructions Per Second
MIS: Management Information Service
MISTER COOL: Multimedia ISdn TERminal for COoperation Over Long distances
MIT: Management Information Tree(1)
ML: MultiLink
MLHG: MultiLine Hunt Group
MLHG: Managed Leased Line Network [SIEMENS product]
MLS: Multi Level Secure (system)
MM: Mobile Management(1)
MMBG: Multi-Media-BetriebsGesellschaft [subsidiary of Deutsche Telekom AG (27%), further network operators (18.5%), Ufa, CLT (each 11%), debis AG , ARD, RTL, Canal+ (each 5.5%)]
MMC: Man-Machine Commands(1)
MMF: Memory Mapped Files [fast file access for applications with POSIX and OSF AES compatible MMF calls]
MML: Man-Machine Language [e.g. used by Siemens EWSD/NC(2) communication]
MMM: MultiMedia eMail
MMTS: MultiMedia TeleServices
MNC: Mobile Network Code
MNP: Microcomputer Networking Protocol [wireless data access protocol, developed by Microcomm]
MO: Managed Object [Contents of a MIB]
MOA: Mobitex Operators Association [with members such as GfD]
Mobitex: [1st generation trunked (Fern-(German)) radio standard, for cellular data package communication with up to 64kb/s, developed by Ericsson Radio Systems AB]
MOC: Maintenance and Operations Console(1)
MOCS: Managed Objects Conformance Statements
MOEOC: Message Oriented Embedded Operations Channel
MOI: Managed Object Instance
MOM: Manager of Managers(1) [managing regional OMCs or device managers]
MOT: Managed Object Toolkit [OV DM4.1 based development environment, as MOT 2.0 (for Y2kC) based on OV DM 5.03, for CMIS based applications, for translating GDMO specifications into OSI compliant implementations within a few minutes by avoiding any XOM/XMP programming]
MOTIS: Message Oriented Text Interchange System
MoU: Memorandum of Understanding
MOX: [(German) Ortsvermittlungen]
MPAK: Mobitex PAcKet [base data unit for information transfer, up to 512B; available MPAK types: status, text, data or HPdata]
MPC: Multimedia Personal Computer(1)
MPCC: Multiprocessor Common Control
MPCH: Main Parallel CHannel
MPCS: Mission Planning and Control Station [software]
MPEG: Moving (or Motion) Pictures Expert Group [standards committee, also a method of file compression and a graphics file format. Main application is the storage of audio and video data on CD-ROMs. See standards description]
MPG: Medical Products Group
MPI/A: Message Processing Interface [on OpC mgmt server]
MPPC: Multipurpose Parallel Processing
MPPF: Multipoint Protocol Polling Function
MPT-1327: [1st generation trunked (Fern-(German)) radio standard]
MPTy: Multiparty
MS: Mobile Station(1)
MSA: Metropolitan Statistical Area [see SMSA]
MSC: Mobile (services) Switching Centre [Netzuebergabe(steuer)punkt in einem GSM-Netz (German), switches traffic to and from is associated BSS and provides services to subscribers]
MSISDN: Mobile Station ISDN number
MSN: MicroSoft Network(1)
MSRM: Mass Storage Reference Model
MSRN: Mobile Station Roaming Number
MSS: Mobile Satellite Services(1)
MSU: Message Signal Unit [Nachrichtenzeicheneinheit (German), part of SS7, for transferring UP information between nodes, average 22 Byte for talk only, 70 Byte in IN]
MSV2: [protocol supported e.g. by Siemens EWSD switches]
MT: Message Type(1) [part of ATM meta signalling cell]
MTBF: Mean Time Between Failure
MTC: Message Type Code [part of MSU]
MTP: Message Transfer Part [part of SS7, Level 1-3, contains the necessary mechanism that ensures reliable functional signal message transmissision, corresponds to the first three layers of the OSI reference model, Nachrichtentransferteil (German), protocol supported by e.g. Erricsson AXE switches]
MTR: Mean Time to Repair
MTS: (1)[GSM operating consortium in Moscow]
MTSO: Mobile Telephone Switching Office
MTTR: Mean Time To Repair
MTU: Maximum Transmission Unit [limitig the size of IP packets]
MUI: [server ?]
MUL: Mobile User Links
MUNDI: MUltiplexed Network for Distributive and Interactive services
MUX: Multiplexer
MVI: MultiVendor Interaction
MVP: MultiVendor Platform
MVW: MeldungsVerWaltung (German) [message management, graphical user interface in EMLS for displaying and processing event reports]
MVWSV: MVW SerVer [in EMLS the central process on the server workstation for manging event reports]
MWA: MeasureWare Agent

N

NACD: Network Automatic Call Distribution [a CO service for ACD]
NACK: Negative ACKnowledgment
NANP: North American Numbering Plan
NAP: Network Access Point
NASC: Number Administration Service Center
NB: Netz-Betreiber (German)
NBR: New Business Release
NBS: National Bureau of Standards [in the USA]
NC: Network Computer(1)
NCC: Network Colour Code(1)
NCI: Non Coded Information [e.g. scanned pages, vs. CI(2)]
NCL: Networks Coomunications Laboratory
NCP: Network Control Point(1)
NCSA: National Center for Supercomputing Applications(1) [located at University of Illinois, develoved Mosaic]
NDC: National Destination Code
NDIS: Network Device Interface Specification
NDS: Network Documentation System(1)
NE: Network Element [in FMP1.1: functional block, which sends events (reports or alarms) to an MD]
NEBS: Network Equipment Builder Standard
NEF: Network Element Function(1)
NEFA: Near End Failure
NEI: Network Element Interface [modular components to connect to NEs for the acquisition of usage data, key enabler of BMP solutions, designed to support interfaces to switches as Ericsson AXE, Siemens EWS-D, DCS DEX, NEC NEAX, Nokia DX200 or AT&T 5ESS]
NEL: Network Element Layer
NEP: Network Equipment Provider
NES: Network Element Server [standard component of BMP, contains the BMP core functions]
NEST: Network Embedded System Technology [developed by Novell]
NET: Norme Europeenne de Telecommunications
NetBIOS: Network Basic Input Output System
netmon: NETwork MONitor [HP OpenView IP discovery process, polls SNMP agents to initially discover the network topology and then detect topology, configuration, and status changes in the network. netmon communicates any changes found to ovtopmd and sends corresponding events to trapd.]
NetPC: Net Personal Computer [with reduced costs of business computing]
NEXT: Near End CrossTalk
NFS: Network File System [developed by SUN]
NGI: Next Generation Internet [aka Internet2]
NHR: Next Hop Resolution
NHRP: Next Hop Routing Protocol [allows routers to dynamically discover the data link address for other routers on a WAN cloud; particularly important for ATM, Frame Relay, SMDS and X.25 environments. Today it is necessary to configure the network layer and datalink layer address for all neighbors on a WAN cloud; NHRP enables the router to discover these addresses dynamically.]
NIC: Network Independent Clocking(1)
NID: Node ID
NII: National Information Infrastructure [synonyme for US government plan for an information highway]
NIS: Network Information Service
NISP: Network Inventory & Service Provisioning [application provided e.g. by Accugraph for Omnitel]
NIST: National Institute of Standards and Technology
NIU: Network Interface Unit
NIUF: National ISDN Users Forum
NLM: Network (or Netware[?]) Loadable Module
NLP: Network Layer Protocol
NLPID: Network Layer Protocol ID
NLS: Network License Server(1) [HP developed, selected as part of DME]
NM: Network Management
NMAS: Network Management System [part of MAS]
NMC: Network Management Center (1)
National Management Centre (2)
NMCS: NMC System
NME: Network Management Entity
NMF: Network Management Forum
NML: Network Management Layer
NMM: Network Map Management [governs propagation rules to reflect the status of parent devices on the hierarchical tree upon an arrival of an alarm]
NMO: NM Option(1)
NMS: Network Management System
NMT: Nordic Mobile Telephone [network technology]
NNI: Network-to-Network Interface [specification for switch-to-switch communication, vs. UNI]
NNM: Network Node Manager [OV product]
NNTP: Network News Transfer Protocol
NOC: Network Operation Center
NOS: Network Operating System
NPA: Network Planning Area
NPC: Network Parameter Control
NPR: Network Performance Reporting [performance management application by Metrica Corp.]
NPS: Network Planning System
NPSI: Network Packet Switching Interface [IBM mainframe's method of linking to X.25]
NRM: Network Resource Management [B-ISDN user part message]
NRR: Network Restoration Ratio
NS: Network Systems
NSA: Network Systems Architecture lab(1)
NSAP: Network Service Access Point
NSAM: Network, System and Application Management (functions)
NSF: National Science Foundation [supplier of Internet backbones]
NSFNET: National Science Foundation NETwork [with certain commercial restrictions applied to its use, which fostered the creation of CIX, see also NSF]
NSM: Network Status Monitor(1) [process within the OSM module. Looks at CMIS events that indicate statuschanges on DDN]
NSMD: Network and Systems Management Division [located in Fort Collins, Co. USA]
NSN: Network Services Node
NSP: Network Services Part(1)
NSS: Network (and switching) Sub-System [switched network including MSC, HLR and transit switches]
NSTC: National Science and Technology Center
NT: Network Termination
NTE: Network Terminating Equipment
NTP: Network Transaction Processors(1) [computing part of HLR]
NTT: Nippon Telegraph and Telephone Corporation
NTTC: National Technology Transfer Center
NUI: Network User Identification
NVoD: Near Video on Demand

O

O: Optional
OACSU: Off Air Call Set Up
OAM: Operation, Administration, Management (or Maintenance)
OAM&P: Operation, Administration, Management (or Maintenance) and Provisioning
OAP: Organisation Alignment Process
OAS: Open Application Server
OASIS: Open And Secure Information Systems
OBN: Out of Band Noise
OC: Operations Channel(1)
OC: Open Collaborative Environment
ODBC: Open DataBase Connectivity [interface definition for a database - application communication, developed by Microsoft, see also JDBC]
ODI: Open Datalink Interface [introduced by Novell and Apple in 1989]
OE: Originating Equipment(1)
OED: OptoElectronics Division [by HP]
OEM: Original Equipment Manufacturer
OEMF: Open Element Management Framework [formerly aka GEMS]
OFA: Oracle Flexible Architecture [methology for supporting multiple Oracle DB versions on one server]
OFB: Output FeedBack mode [encryption standard; sometimes used for asynchronous data streams e.g. from ttys]
OFD: Optical Frequency division Demultiplexer
OFE: Open Fincial Exchange [written in XML]
OFM: Optical Frequency division Multiplexer
OFTEL: OFfice of TELecommunication [in the UK]
OFX: Open Financial eXchange
OGL: Operator GuideLines
OGP: Object Generic Part
OID: Object IDentifier
OIM: Operations Interface Module(1)
OIMCF: OIM(1) Common Functions
OIMDF: OIM(1) Dedicated Function
OIS: Office Information System [including groupware and workflow management technology]
OLE: Object Linking and Embedding
OLTP: OnLine Transaction Processing performance]
OM: Operational Measurement [data collecting by Metrica/NPR]
OMA: Object Management Architecure [specified by OMG; contains 4 components: ORB, object services, common facilities and application objects]
OMAP: Operation and Maintenance Application Part [for network managing functions, part of SS7](1)
OMC: Operation and Maintenance Center [subordinate management system]
OMCS: OMC System
OMG: Object Management Group [nonprofit international corporation made up of a team of dedicated computer industry professionals from different corporations working on the development of industry guidelines and object management specifications to provide a common framework for distributed application development]
OML: Output ManuaL
OMP: Operation and Maintenance Processor(1) [computing part of HLR]
OMT: Object Modeling Technique
ONA: Open Network Architecture
ONE: Open Network Environment [distributed by Netscape]
ONKZ: Ortsnetzkennzahl (German) [6 digits, part of BSZ]
ONP: Open Network Provision [EEC directives, specify interconnection of different national networks or tariff policies]
OO: Object Oriented (or Orientation)
OOD: Object Oriented Design
OOS: Out Of Service
OP: OmniPoint [TMN standard]
OPAL: OPtische AnschlussLeitung (German)
OPC: Originating Point Code [part of MSU, Ursprungsadresse (German)]
OPI: Open Protocol Interface
ORB: Object Request Broker [part of CORBA, responsible for transfering method calls and their results between client and target objects]
ORS: Object Registration Service [part of OV, creates and maintains global directory of agents, their locations and their protocols]
OS: Operating System(1)
OSF: Open Software Foundation(1) [find more here]
OSI: Open Systems Interconnection(1) [a logical structure for network operations standardized by the ISO, a seven layer OSI network architecture defines network protocol standards enabling any OSI-compatible computer or device to communicate with any other OSI-compliant computer or device for a meaningful exchange of information]
OSIE: Open Systems Interconnection Environment
OSIRM: Open Systems Interconnection Reference Model
OSLP: Operation Service Logic Program
OSM: Object Status Map [application of IFMS. Collection of processes that maintain the status of the DDN maps and display it to the operators]
OSPF: Open Shortest Path First [routing protocol; link-state-based interior gateway protcol; defined in RFC1247]
OSS: Operation Support (or Sub-) Systems [Betriebsunterstuetzungssysteme (German), handle service provisioning like ordering or assigning, network engineering and planning and network operations like monitoring or testing]
OSSD: Open Systems Software Division
OSSO: On-Site Service Order
OSTF: Object Services Task Force
OTC: Operating Telephone Company
OTD: Optical Time division Demultiplexer
OTDM: Optical Time Division Multiplexing
OTP: One Time Password [see also RFC 1938; 64 bit sized; derived from the S/Key algorithm of Bellcore]
OTS: OSI(1) Transport System [HP product name]
OUI: Organizational Unique Identifier [part of a SNAP header]
OV: Open View [HP INMS platform, vs. IBM's NetView or DEC's DECmcc]
ovactiond: [SNMP event action daemon, for automated responses to selected events]
OVDM: OpenView Distributed Management
ovfmsadpd: HP OpenView FMP Async Device Proxy Daemon [transcribes in the DCS alarmmessages - received via RS232 ports - into a common format, according to information in the Format Configuration File]
ovspmd: HP OpenView Supervisory Process Manager Daemon [handles ovstart, ovstop and ovstatus requests]
ovtopmd: HP OpenView TOPology Manager Daemon [maintains the network topology tables. These Tables store netmon polling values and information about network objects, including their relationship and status. ovtopmd also updates the topology tables and the OVw object database. The OVw object database is not stored in Ingres.]
OVw: Open View Windows [common graphical user interface that integrates the presentation of network and system management information. Built on industry standard user interface technology, OSF Motif and X11. Access by users thru menu bars or dialog boxes, by applications via API into graphical maps and object databases]

P

PABX: Private Automatic Branch eXchange[cordless in-house mobile standard, (German) private Nebenstellenanlage]
PACK: Positive ACKnowledgment
PACS: Personal Access Control System(1)
PACT: Program for the ACceleration of Technology
PAD: Packet Assembler/Disassembler
PAGCH: Paging and Access Grant Channel
PAP: Pathword Authentication Protocol
PAR: Parameter Field [part of MSU]
PAS: Publicly Available Specification [(German) oeffentlich verfuegbare Spezifikationen (ohne Beachtung gewerblicher Schutzrechte verwendbar)]
PBX: Private Branch Exchange [(German) private Nebenstellenanlage]
PC: Personal Computing(1)
PCA: Policy Certification Authority
PCDATA: Parseable Character DATA [reserved XML keyword]
PCH: Paging Channel
PCI: Protocol Control Information [either separate or as part of a PDU]
PCL: Printer Control Language
PCM: Pulse Code Modulation
PCMCIA: Personal Computer Memory Card Interface Association(1)
PCN: Personal Communication Network
PCO: Product Change Order
PCP: Programmable Communication Processor
PCR: Preventive Cyclic Retransmission(1) [cyclic retransmission of all unacknowledged frames on an idle link, applied to satellite and high-propagation delay links]
PCS: Personal Communication Service [(e.g.) a virtual network service for private users, equivalent to PCN, common expression in the USA](1)
PCSA: Personal Computing Systems Architecture
PCT: Private Communications Technology [introduced by Microsoft, for data encryption within Microsoft's Internet Explorer 2.0, vs. SSL]
PD: Protocol Discriminator(1) [part of ATM meta signalling cell]
PDA: Personal Digital Assistant
PDC: (Japanese) Personal Digital Cellular(1) [a microcellular system in Japan]
PDF: Portable Document Format [developed by Adobe in 1993]
PDH: Plesiochronous Digital Hierarchy [recent standard, rates in Europe: E1 - 2Mb/s, E2 - 8Mb/s, E3 - 34Mb/s, E4 - 139Mb/s, used for voice communication]
PDL: Public Distribution List
PDM: Product Data Management
PDU: Protocol Data Units(1) [e.g. GetRequest, GetNextRequest, GetResponse, SetRequest and Trap, to be supported by SNMP agents, or as part of SIP-L3]
PEI: Peak Emission Interval [(German) kleinster erlaubter Abstand zwischen zwei ATM-Zellen einer Verbindung]
PEM: Privacy Enhanced Mail [encrypting software, used by NCSA]
PEP: Packetized Ensemble Protocol(1)
PF: Presentation Function [performs the general operations to translate the information held in the TMN information model to a displayable format for the human-machine interface, and vice versa]
PFF: Proprietory FMP Format [to be used by a mediation device to communicate with the FMP server, comprising of three components: Service Primitive (1B), Format (1B) and Format Specific Information (variable length)]
PGP: Pretty Good Privacy [encrypting software, used by NCSA]
PHP: Personal Handy Phone [had to be renamed to PHS, for PHP is the name of a well known publishing house in Japan]
PHS: Personal Handy phone System [developed in Japan, will start mid '95 in Japan, at 1880-1900 MHz, with TDMA/TDD access technique, pi/4 QPSK modulation technique, similar service to CT2, see also DECT]
PIC: Personal Intelligent Communicator [mobile communication supported PDAs]
PICS: Platform for Internet Content Selection(1)
PID: Protocol Identifier [part of a SNAP header]
PIM: Protocol Independent Multicast [used between routers so they can track which multicast packets to forward to each other and to their directly connected LANs]
PIN: Personal Identification Number
PIR: Project Issue Report
PKS: Public Key Service [key management and distribution system for inter-enterprise, lawful, authentical and confidential communication]
PKV: (German) PrivatKundenVertrieb
PLCP: Physical Layer Convergence Protocol
PLE: Path Length Efficiency
PLMN: Public Land Mobile Network [entire network which provides operator's service to subscribers, including radio and switching network]
PLT: Pay Load Type
PLUS: Professional Labor Utilization System [tracks time spent by people in the PSO and associates it with specific engagements and types of activity]
PM: Performance Monitoring
PMD: Physical Medium Dependent (layer) [provides the point-to-point communications between stations in the network]
PMO: Present Mode of Operation
PMR: Private Mobile Radio
PMS: Project Management System
PNA: Parallel Network Architecture [shared BSTs, BSCs and MSCs by two logically separate networks, e.g. in UK's PCN by Unitel and Mercury]
PNC: Paging Network Controller
PNE: Path Number Efficiency
PNP: Private Numbering Plan [interesting for large corporate customers]
POCSAG: Post Office Code Standard Advisory Group [1st generation paging standard]
POH: Path section OverHead
POI: Point of Interconnect [with other operator's network, typically with the fixed network]
PON: Passive Optical Network
POP: Point of Presence(1)
POR: Plan Of Records
POSIT: Profiles for OSI Technologies
POT: Point of Termination [marking the point at which the local exchange carrier's service ends]
POTS: Plain Old Telephone Service [traditional voice services, vs. VANS]
PP: Portable Parts
PPG: Personal Information Products Group
PPM: Pulse Position Modulation [as used IRDA high speed extensions]
PPP: Point-to-Point Protocol [allows computers to use the TCP/IP protocol and become a full-fledged Internet member with a standard telephone voice line and a high speed modem, see also SLIP]
PPSN: Public Packet-Switched Network
PRI: Primary Rate Interface [ISDN multiplex connection, supports S2M interface (with 4 wires), 30 * 64kb/s (B channels, 2Mb/s) and 1 * 64 kb/s (D channel)]
PRISM: Performance, Relilience, Integration, Security and Management [HP 9000 64-bit PA-8000-based server series]
PRM: Premium Rate(1)
PROMIS: PROsecutor Management Information System [developed by Inslaw, for linking different electronic sources in a context dependent manner]
PS: Pruefschleife(1) (German)
PSAP: Public Safety Answering Point [public facility designated to receive and respond to emergency calls]
PSD: Personal Security Devices [such as smart cards]
PSDN: Public Switched Data Network
PSG: Personal Systems Group [HP entity]
PSK: Phase Shift Keying
PSM: Personal Storage Management
PSN: Packet-Switched Network
PSO: Private Service Operator(1)
PSPDN: Packet Switched Public Data Network [based on X.25]
PST: Product Service and Tariff administration
PSTN: Public Switched Telephone Network
PSVCI: Point-to-Point Signalling VCI [part of ATM meta signalling cell, 2 Byte]
PT: Payload Type [3 bit field, part of ATM header, identifies user or contol data]
PTI: Payload Type Identifier
PTM: Packet Transfer Mode
PTO
PTT: Postal Telegraph and Telephone [quasi- or full government regulatory agencies and communications service suppliers of most countries]
PU: Physical Unit
PUK: PIN Unblocking Key (or Personal Unlocking Key) [aka Super PIN]
PVC: Permanent Virtual Connection (or Channel or Circuit)
PWAC: Present Worth of Annual Charges
PWCE: Present Worth of Capital Expenditures
PWT: Personal Wireless Telecommunications [new name for the licenced DCT1900 as well as the unlicenced WCPE cordless technologies in the USA]

Q

Q3: [OSI(1) Network Management basic protocol stack]
QA: Q Adaptor
QAF: Q Adaptor Function [used to connect as part of the TMN those non-TMN entities which are NEF-like and OSF-like; the responsibility of the QAF is to translate between a TMN reference point and a non-TMN (e.g. proprietary) reference point]
QAM: (German) Quadratur-Amplitudenmodulation
QAS: Quasi Associated Signaling [in QAS signaling links are separated from the transmission route but are switched via the STP]
QCIF: Quarter Common Intermediate Format
QIC: Quarter-Inch Cartridge tape
QMS: Quality Maturity System
QOS: Quality Of Service
QPSK: Quadrature Phase Shift Keying [modulation technique, used by PHS]

R

R-2000: [1st generation cellular standard]
RA: Return Alarm
RACE: Research and development for Advanced Communications in Europe
RACH: Random Access Channel
RADIUS: Remote Authentication Dial In User Service [developed by Livingston Enterprises; secure client/server based log in procedure]
RAI: Remote Alarm Indication
RAID: Redundant Array of Inexpensive (or Independent) Disks
RAM: Reset AcknowledgeMent [B-ISDN user part message]
RAN: Radio AN
RAO: Revenue Accounting Office
RARP: Reverse Address Resolution Protocol [to bind a LLA to an IP address]
RAS: Remote Access Service [by Windows NT]
RBER: Residual Bit Error Rate
RBOC: Regional Bell Operating Company
RCO: Response Center Organisation [HP operation, CRC]
RCR: Research and development Centre for Radio systems [based in Japan]
RDB: Relational Data Base
RDBM: Relational Data Base Management
RDN: Relative Distinguishing (or Distinguished) Name [constructed by an object instance's distinguishing attribute, together with the value of that attribute, within one object class; see also FDN]
RDS: Radio Data System
RDSS: Radio Determination Satellite Service [for determining positions]
RDT: Remote Digital Terminals
REL: RELease [B-ISDN user part message]
RES: RESume(1) [B-ISDN user part message]
RF: Radio Frequency
RFC: Request for Comment [e.g. proposed by IETF working groups and accepted as Internet TCP/IPStandards]
RFI: Request for Information
RFP: Request for Proposal
RFQ: Request for Quotation [(German) Angebot]
RFT: Request for Technology [process to evaluate technologies]
RFTR: Radio Frequency Transmission and Receiving
RHS: Right Hand Side
RI: Reference Indicator(1) [part of ATM meta signalling cell, 2 Byte]
RIL: Radio Interface Layer
RIP: Routing Information Protocol(1) [interior routing protocol, used by the routing process on Berkeley derived UNIX systems]
RKB: Ring Knowledge Base
RL: Repeat Limit
RLC: ReLease Complete [B-ISDN user part message]
RLP: Radio Link Protocol [variable data rate up to 9600b/s, provides error-free data channel, with frame sizes of 192b]
RM: Recovery Manager
RMC: Regional Management Centre
RMI: (Java) Remote Method Invocation
RMON: Remote network MONitoring
RMS: Remote Monitoring System
RNIS: Reseau Numerique a Integration de Services [ISDNin France ("Numeris")]
RNMC: Regional Network Management Center
RNUD: Raw Network Usage Data units
ROA: Recognized Operating Agency(1)
ROP: Rapid OpenView Prototyping [HP developed methology to deliver a quality OV environment]
ROSE: Remote Operation Service Entity (or Element) [generic OSI service that allows applications to invoke requests and reply interactions with applications on remote systems; (German) Realisierung der entfernten Zugriffe auf technische Einrichtungen]
ROSI: RadiO SIgnaling protocol
RPC: Remote Procedure Call [(German) Aufruf von Programmen auf remote systems, for client/server applications]
RPCU: Radio Port Control Unit
RPM: Resource and Performance Management
RPOA: Recognized Private Operating Agency
RR: Radio Resource management
RS: Receive Signature(1)
RSA: Rivest, Shamir and Adleman [asymmetrical encrypting method, using a private and a public key, named after the developers]
RSE: Real System Environment
RSM: Radio Subsystem Management(1)
RSN: Remote Service Network [developed by Stratus; operates as a continous direct line between the customer site and Stratus' customer assistance center]
RSVP: resource ReSerVation Protocol [proposed by IETF, enables reservation of bandwidth in TCP/IP networks, eg. for movies]
RTP: Real Time Protocol [alternative to TCP; allows real time audio and video on WWW]
RTSE: Reliable Transfer Service Element
RVSA: Remote Variant Selection Algorithm [functionality of TCN]
RXLEV-DL: Received Level Downlink
RXLEV-UL: Received Level Uplink
RXQUAL-DL: Received Quality Downlink
RXQUAL-UL: Received Quality Uplink

S

SA: Service Affecting(1)
SAA: Systems Application Architecture(1)
SAAL: Signaling ATM Adaptation Layer
SABM: Set Asynchronous Balanced Mode
SACCH: Slow Associated Control Channel
SACF: Single Association Control Function
SAM: Subsequent Address (Message) (1) [B-ISDN user part message]
SAN: Satellite Access Network point
SAP: Service Access Point [provides access to layers of the OSI reference model]
SAPI: Service Access Point Identifier
SAR: Segmentation And Reassemby(1) [mapping of variable length data frames to ATM cells and vv]
SAS: Service Activation System(1)
SBR: Statistical Bit Rate [(German) ATM-Uebertragungsdienst fuer variable Bitraten]
SC: Shared Channel
SCAP: Smart Card Administration Package
SCC: Switching Control Center(1)
SCCP: Signaling Connection Control Part [connects sophisticated database management and OSI network service compatibility, of SS7, Steuerteil fuer die Zeichengabeverbindung (German)]
SCE: Service Creation Environment
SCEF: Service Creation Environment Function
SCF: Service Control Function
SCH: Synchronosation Channel
SCP: Service Creation Point(1) [contains call completion data; queries are sent to the SCP from the STP; a response message is sent from the SCP back to the signaling point of origination]
SCPC: Single Channel Per Carrier
SCR: Sustainable Cell Rate
SCSI: Small Computer Systems Interface [industry standard interface, used primarily for mass storage]
SCSI-2: SCSI revision 2 [see also FD SCSI-2, FWD SCSI-2 and SE SCSI-2]
SCZ: Strategisches Computer Zentrum (German) [operated by the German Telekom, 6 sites, each responsible for appr. 20 IVS, second level support]
SDCCH: Standalone (or Secondary) Dedicated Control Channel [GSM-Signalisierungskanal]
SDD: Super Density Disc [developed by Toshiba/Warner, data storage capacity 10 GB or up to 280 minutes video (MPEG 2) with 32 dubbings and 8 audio tracks]
SDDI: Shielded Twisted Pair Distrituted Data Interface
SDF: Service Data Function [like DB]
SDH: Synchronous Digital Hierarchy [Standard for Transmission Lines ,eg Framing and Multiplexing, New Technology, CCITT version of SONET]
SDK: Software Developers Kit
SDL: Specification and Description Language [used to design in a SCE] (1)
Sales and Delivery Leads (2)
SDLC: Synchronous Data Link Control [uses subset of HDLC]
SDP: Service Data Point
SDQL: Standard Document Query Language
SDR: Special Drawing Right
SDRP: Source Demand Routing Packet [see also RFC 1940]
SDS: Software Distribution Service [industry standard (OSI and POSIX 1003.7.2) product, integrated into OV]
SDU: Software Distribution Utilities(1) [developed by HP, based on DME] /
SDW: Self-Development Workshop (German) [1 day training, offered by HP Germany Training & Consulting]
SE SCSI-2: Single-Ended implementation of SCSI-2 [5MB/sec, up to 7 devices]
SEAS: Signaling Engineering and Administration System [part of the OMAP]
SEF&I: Software, Engineering, Furnished & Installed
SEP: Signalling End Point [part of SS7, Endpunkt fuer Zeichengabenachrichten (German)]
SEPP: Secure Electronic Payment Protocol specification [developed by Mastercard, IBM, Netscape GTE and Cybercash, vs. STT]
SES: Severely Errored Seconds
SET: Secure Electronic Transaction
SF: Service Field(1)
SF/MF: Single Frequency/Multi Frequency Signal
SFAX: Security FAX [Windows based software for file encryption with direct transmission capability via PC fax cards]
SFH: Slow Frequency Hopping
SFILE: Security FILE [Windows based software for local file encryption]
SFNB: Security Finance Network Bank [first internet bank]
SFR: Société Francaise du Radiotelephone [French GSM provider]
SFS: System File Server
SG: Study Group [of the ITU-T]
SGC: ? [runs a sustained transfer rate of 50 MB/sec]
SGI: Silicon Graphics Inc
SGM: SeGMentation [B-ISDN user part message]
SGML: Standard Generalized Markup Language [set of codes used to format documents, described in ISO 8879]
SGMP: Simple Gateway Monitoring Protocol [predecessor of SNMP]
SHN: Self-Healing Network
SHTTP: Secure HTTP
SI: Service Indicator [part of MSU]
SIB: Service Independent Building Block
SIC: Structured Intellectual Capital
SID: Silence Descriptor frame
SIE: Status Indication Emergency [link test feedback]
SIF: Signalling Information Field(1) [part of SS7, Zeichengabeinformationsfeld (German)]
SIG: Solution Integration Group (1)
SIID: Service Instance ID
SIM: Subscriber Identity (or identification) Module
SIMM: Single Inline Memory Module
SIN: Status Indication Normal [link test feedback]
SIO: Signalling Information Octet [part of SS7, Diensteinformationsoktett (German)]
SIOS: Status Indication Out of Service [link test feedback]
SIP: SMDS Interface Protocol(1) [differentiatable in layer 1, 2 or 3]
SIR: Serial InfraRed physical layer link [as used IRDA high speed extensions]
SISA: Supervisory and Information System for local and remote Areas
SIU: Signaling Interface Units [building block of SS7 platform, connecting to the network]
SKIP: Simple Key management for IP [key management protocol which defines the way in which encryption and authentication keys can be securely shared between two parties, developed by SUN]
SL: Service Logic [Logic of services, available to customers, part of SMAS]
SLA: Service Level Agreement [confirming e.g. maximum response time or maximum system downtime, between IT mgmt and its end users]
SLEE: Service Logic Execution Environment [for creation, testing and deployment of services]
SLEL: Service Logic Execution Language [primitives, used with SDL]
SLIP: Serial Line Internet Protocol [see also PPP]
SLP: Service Logic Program(1) [created in a SCE, usually running on an SCP]
SLS: Signaling Link Selection (Code)(1) [part of MSU]
SLTE: Signaling Link Termination Equipment
SLU: Subscriber Line Unit
SLVM: Shared Logical Volume Manager [available with HPUX 10.10]
SM: Service Management(1)
SMAE: Systems Management Application Entity
SMAF: Service Management Agent Function(1)
SMAP: Systems Management Application Process
SMAPM: Systems Management Application Protocol Machine
SMART: Service Management Automation and Re-engineering Team [networking team of the NMF]
SMAS: Service Management System [part of MAS]
SMASE: (OSI(1)) Systems Management Application Service Element [(German) Anwenderteil fuer die Realisierung objektorientierter Elemente]
SMC: (System and) Service Management Center(1) [operated by DBP Telekom] /
SMCP: Short Message Control Protocol
SMDS: Switched Multimegabit Data Service [packet oriented broadband data service, operated over MANs]
SMF: Service Management Function
SMFA: Specific (or System) Management Functional Area [e.g. five SMFAs as defined]
SMFU: System Management Functional Unit
SMG: Special Mobile Group [technical committee within ETSI, developing extended GSM and 3rd generation technologies like UMTS]
SMI: Structure of Management (or Managed) Information [set of rules for defining or describing managed objects contained in the MIB and how management protocols may access the objects, see also ASN.1; RFC 1155]
SMIP: Serice provider Multichannel Interface Processor
SMK: Shared Management Knowledge
SML: Service Management Layer [see EML and NML]
SMLA: Subscriber Line Module Analog [(German) Teilnehmeranschlussbaugruppe fuer analoge Anschluesse im EWSD]
SMLD: Subscriber Line Module Digital [(German) Teilnehmeranschlussbaugruppe fuer digitale Anschluesse im EWSD]
SMORG: Small and Medium busines ORGanizations [with a small organization having < 100 people/PCs and a medium organization with 100 to 2500 people/PCs with a dedicated MIS/LAN administrator]
SMP: Symmetric Multi-Processing (or Processor)(1) [workstation capabilities, each processor has the same affinity for I/O and memory]
SMPC: Shared Memory Parallel Computer
SMRP: Short Message Relay Protocol
SMS: Short Message Service(1)
SMSA: Standard Metropolitan Statistical Area [areas based on counties as defined by the U.S. Census Bureau that are cities of 50,000 or more population and the surrounding counties]
SMSC: Short Message Service Center
SMSCB: Short Message Service Cell Broadcast
SMSMO/PP: Short Message Service Mobile Originating Point to Point [created on a hand set]
SMSMT/PP: Short Message Service Mobile Terminating Point to Point [read on a hand set]
SMTP: Simple Mail Transfer Protocol(1) [layer 6, Internet standard]
SN: Service Node(1)
SNA: (IBM's) System Network Architecture [de facto standard protocol for data networks]
SNAP: Sub-Network Access Protocol
SNCC: Signaling Network Control Center
SNI: Service Network Interface(1)
SNM: Signaling Network Management(1) [part of SS7, Zeichengabenetzmanagement (German)]
SNML: Subnetwork Management Layer [see NEML]
SNMP: Simple Network Management Protocol [defines a simple protocol by which management information for a network element may be inspected or altered by physically remote users, used for managing TCP/IP internets, prefers itsself connectionless transport such as UDP, also element or platform of OV, defined by IAB, Internet standard, operations available are get, get-next, set and trap]
SNO: Singapore Networks Operation [responsible for Customer Network Mgmt and platforms for billing data collection services]
SOCRATES: System Of Cellular RAdio for Traffic Efficiency and Safety
SOE: (Bellcore) Standard Operating Environment
SOH: Section OverHead
SOM: System Object Model
SONET: SDH Optical Network Synchronous Optical Network [entspr. SDH, US Standard,
SOPI: Service Order Provisioning Infrastructure
SOS: Service Order System
SP: Signaling Point
SPC: Signaling Point Code(1) [part of SS7, Signalisierungspunktcode (German)]
SPCS: Satellite Personal Communications Services(1) [in the bands 1610-1626.5/2483.5-2500 Mhz and 1980-2010/2170-2200mhz]
SPE: Synchronous Payload Envelope
SPEC: Standard Performance Evaluation Corporation
SPI: Smart Plug-In [for HP OV ITO]
SPID: Service Profile IDentifier [part of ATM meta signalling cell]
SPIRIT: Service Providers' Integrated Requirements for Information Technology
SPMD: Systems Program Management and Development (division) [HP Entity]
SPOF: Single Point Of Failure
SPP: Scalable Parallel Processor
SPU: System Processing Unit
SPX: Sequenced Packet eXchange
SQL: Structured Query Language
SR: Source Routing
SRES: Signed RESult
SRF: Specialized Resource Function
SRN: Service Reference Number
SRT: Source Routing Transparent
SS: Supplementary Services management
SS7: Signaling System #7 [Zeichengabesystem Nr. 7 (German) <--> Nutz, internationally standardized protocol used for common channel signaling purposes]
SSCF: Service Specific Coordination Function [mapping between SSCOP and application protocol]
SSCOP: Service Specific Connection Oriented Protocol [provides reliable ATM based data transfer between two users]
SSCP: Service Switching and Control Point
SSCS: Service Specific Convergence Sublayer
SSD: Storage Solution Division(1) [HP entity]
SSDG: Solution Sales & Delivery Group [HP entity]
SSF: Service Subscriber Field(1) [part of MSU]
SSI: Support System Interface(1)
SSIP: Standard Serial Interface Processor
SSL: Secure Socket Layer [encrypting protocol, used by Netscape, network encryption and authentication tool, designed to prevent hosts from stealing information by "wire-tapping" or otherwise monitoring a network]
SSN: Sub System Number
SSP: Service Switching Point [switching computer for IN services; uebernehmen vermittlungstechnische Aufgaben im IN (German)]
SSS: Switch(ing) Sub-System(1)
STA: Spanning Tree Algorithm
STD: Systems Technology Division
STDM: Synchronous Time Division Multiplexing
STE/SB: Security Terminal Equipment/Security Base
STG: Systems Technology Group [former HP Organisation]
STL: Standard Template Library [part of C++ standard]
STM: Synchronous Transfer Mode [SDH level]
STP: Signaling Transfer Point(1) [part of SS7, Transferpunkt fuer Zeichengabenachrichten (German), connect SSPs and SCPs, usually a packet switch set up in redundant pairs that routes siganling messages between various constituent links without altering the message]
STS: Synchronous Transfer (or Transport) Signal [SONET level]
STT: Secure Transaction Technology [developed by VISA and Microsoft, vs. SEPP]
SUERM: Signal Unit Error-Rate Monitor [a link error rate monitor]
SUL: Segment Unit Leader
SUM: Software User Manual(1)
SUMR: Satellite User Mapping Register
SUS: SUSpend [B-ISDN user part message]
SUT: System Under Test
SVC: Switched Virtual Connection
SVOICE: Security VOICE [set for authentical and confidental voice communication, ISDN based]
SVVP: Software Verification and Validation Plan
SWCM: SoftWare Call Manager
SWOT: Strengths, Weaknesses, Opportunities & Threads
SWSG: Software Safeguarding [used by EMN]

T

TA: Technically Advisory(1) [procedures issued by Bellcore, may turn into Trs]
TAA: Type Approval Authorities
TAC: Telecom Architecture Consultancy(1)
TACACS: Terminal Access Controller Access Control System [communication protocol used by Cisco terminal servers to ask a host (called the TACACS server) to authenticate a user who wishes to use the terminal server. Although not an Internet standard as such, TACACS has been defined in RFC 1492.]
TACF: Terminal Access Control Function
TACH: Traffic and Associated Channel
TACS: Total Access Communication System [network technology]
TAE: (German) TeilnehmerAnschlussEinrichtung
TAF: Terminal Adaption Function
TAN: Total Area Network
TAP: Telecommunications Application Platform(1) [layer of TMOS] /
TAPI: Telephony API [developed by Intel and Microsoft, see also TSAPI, part of Windows NT 4.0]
TAS: Terminal Activation Service
TAXI: [lower cost ATM LAN, based on AMD TAXI chip, 100Mb/s]
TBD: Technischer Betrieb Daten (German) [Telekom-Regionalinstanz]
TBR: Technical Basis for Regulation
TC: Transmission Convergence(1) [part of ATM]
TC-ISP: Transaction Capabilities Intermediate Service Part [of SS7]
TCA: Threshold Crossing Alert
TCAP: Transaction Capabilities Application Part [of SS7, designed for application type information transfer, lets a switch call and interrogate a DB]
TCB: Trusted Computing Base
TCBU: Technical Computing Business Unit [HP entity]
TCH: Traffic Channel
TCN: Transparent Content Negotiation [between web server and browser; functionality of HTTP1.1]
TCOS: Telekom Chipcard Operating System
TCP: Transmission Control Protocol(1)
TDB: Temporary DataBase
TDD: Time Divion Duplex
TDM: Time Division Multiplexing(1)
TDMA: Time Division Multiple Access [by diving a radio channel into time slots. Each conversation is converted to a digital signal which is then assigned to one of the time slots. More complex than FDMA, less complex than CDMA]
TDN: Telekom Designed Network [by DBP Telekom]
TE: Terminal Equipment
TEBEZ: Technische Einrichtungsbezeichnung (German) [26 digits: 10d BSZ, 3d Raum, 2d Reihe, 3d Gestell, 2d Einbauplatz, 3d Baugruppenplatz, 2d Eingang, 1d blank]
TED: TriTeal Enterprise Desktop
TEDOS: TEchnisches DOkumentationsSystem (German)
TEI: Terminal Equipment (or Endpoint) Identity(1)
TELNET: TELetype over NETwork protocol
TEM: Telecom Equipment Manufacturer [or Vendor]
TEMPEST: Transient Electromagnetic Pulse Emanation STandard [defines limits for short timed electromagnetic radiation]
TEP: Telecom Equipment Provider
TETRA: Trans European Trunked RAdio [2nd generation trunked radio standard, (German) Buendelfunksystem, intended for use in Europe by emergency services]
TFTP: Trivial File Transfer Protocol
TFTS: Terrestrial Flight Telephone System [one of the coming pan-European services or standards]
TG: Trunk Group
TGS: Ticket Granting Server [installed at a Kerberos server, part of the DCE security service]
THT: Token Holding Time [maximum token holding time by a station operating according to the token passing principle, as defined by MAC(1), eg. as implemented in FDDI]
TI: Transaction Identfier
TIA: Telecommunication Industry Association [US bound]
TIB: Task Information Base
TIBIS: (German) Telekomm-Integrierendes Büro- InformationsSystem
TIC: Telecom Industry Consultant
TIFF: Tag Image File Format [graphics file format, used in many paint, imaging and DP programs, developed by Aldus Corp.]
TIM: Telecom Industry Marketing
TINA: Telecommunications Information Networking Architecture
TINSD: Telecom/ISP Network Service Delivery
TIS: Trusted Information Systems
TISC: Telecom Industry Solution Center (Team)
TK: Telekom(munikation) (German)
TL1: [NE-Message-Protokoll, "fundamental", BellCore based, US-verbreitet, trotzdem NE-spezifisch, Alternativen: proprietory command languages]
TLD: Top Level Domain [controlled by the IAHC; e.g. net, ord, de]
TLDN: Temporary Local Directory Number
TLI: Transport Layer Interface
TLP: Transmission Level Point [used to determine the power of a test signal]
TMF: Telecommunication Management Framework [HP OpenView based]
TMIP: [DEC offered NEM platform]
TMN: Telecommunication Management Network [forthcoming Q3 standard for managed object classes and their properties, defined by ISO and ITU (CCITT Recommendation M.3010), basement for HP OV DM Agent Platform]
TMN/6000: [IBM offered TMN platform, comparable to HP's OV]
TMO: Test & Measurement Organization [within HP]
TMOS: Telecommunications Management & Operations Support [Ericsson application]
TMS: Truth Maintenance System(1)
TMSI: Temporary Mobile Subscriber Identity
TMU: Telecom Marketing Units [based on the TSBU entities]
TN: Timeslot Number(1)
TND: Telecom Network Division [formerly TNO]
TNO: Telecom Network Operation [Grenoble, responsible for Intelligent Networks, Telecom Network Management and Mobile Services platforms]
TO: Telecom Operator
TOP: Technical and Office Protocols
TP: Transaction Processing
TP/CN: [OSI(1) standard]
TPC4: Transport Class 4
TPD: Telecom Platforms Division [based in California, formerly TPO(2)]
TPO: Telecom Products Operation(1)
TR: Technical Requirement(1) [Bellcore procedure]
TRAMS: TRAvel Management System
trapdTrap Daemon [process to manage SNMP events]
TRAU: Transcoder and Rate Adaptor Unit
TRIP: Token Ring Interface Processor
TRP: Technology Reinvestment Project
TRUE: Trade Requested UpdatE process [consists of an order letter sent to each support contract customer informing them of a new release of an operating system, and how to get it. Offers the customers more choice in whether they would like to adopt the latest OS(1)]
TRX: Transceiver [Transmitter-Receiver]
TS: Telecom Service(1)
TSA: Time Slot Assignment
TSAPI: Telephony Service API [interface for connecting telephone equipment and PC networks, developed by Novell and AT&T, see also TAPI]
TSB: [standards organisation]
TSBU: Telecom Systems Business Unit [represented by TNO, SNO and TPO]
TSC: Telephone Switching Center(1)
TSCO: Test and Measurement Services and Consulting Operation [formerly AEO]
TSI: Time Slot Interchange
TSL: Timeslot(1)
TSP: Telecom Service Provider
TSPS: Traffic Service Position System [provides operator services]
TSR: Terminate and Stay Resident
TT: Transaction Tracker(1) [part of MeasureWare]
TT&C: Telemetry, Tracking and Command [(German) Steuerkommandos zur Uebertragung und Bewegungskontrolle]
TTID: Trouble Ticket IDentifier
TTL: Time To Live
TTP: Trusted Third Parties
TTRT: Target Token Rotation Time [maximum token rotation time, as defined by MAC(1), eg. as implemented in FDDI]
TTS: Trouble Ticketing System
TTT: Telecom Technology Team [Grenoble]
TU: Tributary Unit [(German) Unterabteilung des VC-4 fuer Zubringersignale geringerer Bandbreite]
TUBA: Tcp/ip and Udp with Bigger Addresses [alternate proposal for extending the IP address space, see also IPng]
TUG: Tributary Unit Group
TUP: Telephone User Part [provides non-ISDN call setup and control, part of SS7]
TWAIN: Toolkit Without An Important Name [software interface between a scanner and scanner software]
TWLT: Trunk With Line Treatment

U

UA: Unnumbered Acknowledge
UAS: Unavailable Second
UBA: Unblocking Acknowledgement [B-ISDN user part message]
UBL: Unblocking [B-ISDN user part message]
UBR: Unassigned (or Unspecified) Bit Rate [(German) ATM-Uebertragungsdienst ohne spezifizierte Dienstguete]
UDF: User Defined Function
UDI: Unrestricted Digital Information (service) [used for fast connection set up, in GSM-MSCs]
UDP: User Datagram Protocol
UI: Unnumbered Information
UIM/X: [latest version of Interface Architect]
UMTS: Universal Mobile Telecommunications System [post-GSM with 2Mbps, integration with B-ISDN, 3rd generation standard with complete ETSI draft specification by 1998 based on FPLMTS, supported with 20% of ACTS budget]
UNCTAD: United Nations Conference on Trade and Development [see also ACIS]
UNI: User(-to-)Network Interface [interface specification by the ATM forum, vs. NNI] or Unified Network Interface
UNMA: Unified Network Management Architecture [AT&T product]
UNO: Unified Network Objects [OMG proposed RPC standard, transport protocol for CORBA 2.0]
UP: User Part(1) [Anwenderteil]
UPA: User Part Available [B-ISDN user part message]
UPC: Usage Parameter Control [ATM term]
UPS: Uninterruptible Power Source
UPT: Universal Personal Telecommunications(1)
URL: Uniform Resource Locator [address of a document on the World Wide Web]
USI: User System Interface
USL: Uniform Resource Locator [key specification of WWW, see also HTTP and HTML]
USHR: Unidirectional Self-Healing Network
USR: User-to-user Information [B-ISDN user part message]
USRD: User and Software Requirement Document
USS: US Sprint [Ldc, owned by US Telecom]
UT: Unit Test [part of SVVP]
UTP: Unshielded Twisted Pair [aka EtherTwist]
UUID: Universally Unique IDentifier [special data type, guaranteed to be unique in all time and space]

V

V.23: [(German) spezifiziert 600/1200-Bit-Modems zur Benutzung im oeffentlichen Fernsprechwaehlnetz, nur noch fuer BTX von Bedeutung]
V.24: [(German) Definition der physikalischen Schnittstelle zwischen Datenend- und Datenuebertragungseinrichtungen]
V.25: [(German) spezifiziert automatische Waehl- und/oder Anrufbeantworter im oeffentlichen Fernsprechwaehlnetz sowie die Abschaltung von Echosperren bei handvermittelten Verbindungen]
V.29: [(German) Halb-Duplex-Datenuebertragung mit maximal 9600 Baud fuer FAX-Modems]
V.35: [(German) beschreibt die Schnittstelle zwischen Modems, die ueber das oeffentliche Telefonnetz verbunden sind. Data rate 48 kb/s]
VAB: Value Added ? [aka ISV]
VAG: VRML Architecture Group
VAM: Verband der Anbieter von Mobilfunkdiensten (German) [Interest group of German service providers]
VANS: Value Added Network Services [vs. POTS]
VAS: Value Added Service
VASP: Value Added Service Provider
VBM: Virtual Bank Manager [application developed by Five Paces Software; co-sold by HP]
VBN: Vermittelndes Breitbandnetz (German)
VBR: Variable Bit Rate [vs. CBR]
VC: Virtual Channel(1) [e.g. in broadband communication]
VC-4: Virtual Container level 4 [(German) enthaelt die Nutzdaten bei einer Geschwindigkeit von 140 Mb/s]
VCC: Virtual Channel Connection
VCI: Virtual Channel Identifier(1) [16 bit field, part of ATM header, identifies channels between 2 users]
VCP: Value Creation Process
VCSEL: Vertical Cavity Surface Emitting Laser
VDP: Video Datagram Protocol [adapts datastream to given net bandwidth in WWW]
VDSL: Very high rate Digital Subscriber Line
VE: Vermittlungseinheit (German)
VEA: Very Early Assignment
VEBEL: (German) (Verfahren zur Auswertung von) VErkehrsBELastungen
VFN: Vendor Feature Note
VFS: Virtual File System
VGA: Video Graphics Adapter
VGAnyLAN: Voice Grade Any LAN [supports IEEE 802.12 high speed LANs at 100Mbps as well as IEEE 802.3 LANs at 10Mbps]
VGNV: (German) VerkehrsGebuehrenNachVerarbeitung
VIA: Vendors ISDN Association [founded by 13 network interested companies, e.g. Bay Networks, Cisco, Intel, Microsoft, Motorola, 3Com and U.S.Robotics, defining global standards for a simpler and faster availability of interoperable ISDN solutions]
VIAG: Vereinigte Industrie-Unternehmungen Aktiengesellschaft [not used after 1972]
VIP: Versatile Interface Processor(1)
VLR: Visitor Location Register [database maintained by the MSC, contains temporary subscriber information]
VME: VersaModule Europe
VMS: Voice Mail Service
VMSC: Voice Mail (or Message) Service Center(1)
VMZ: (German) VerkehrsManagementZentrale
VOD: (or: VoD) Video On Demand
VOAIC: Video mOSAIC
VOT: Televoting
VP: Virtual Path [collection of VCs]
VPC: Virtual Path Connection
VPI: Virtual Path Identifier [8 bit field, part of ATM header]
VPLS: Verkehrsmittelübergreifendes Planungs- und LeitSystem (German)
VPM: Veraenderungen Persoenlich Meistern (German) [2 days training, offered by HP Germany Training & Consulting]
VPN: Virtual Private Network [private network functionality provided over an public IN]
VPNS: Virtual Private Network Service
VR: Virtual Reality
VRML: Virtual Reality Modeling (or Markup) Language
VSAT: Very Small Aperture Terminal
VT: Virtual Terminal
VTAM: Virtual Telecommunications Access Method
vtp: [OSI(1) standard]
VUE: Visual User Environment

W

WABI: Windows Application Binary Interface [developed by SunSoft]
WACS: Wireless Access Control System [similar to DECT, developed in the US]
WAIS: Wide Area Information Servers [InterNet based easy to use searching system on documents]
WAN: Wide Area Network
WARC: World Administrative Radio Conference
WATS: Wide Area Telephone Service [transparent to the caller, automatically switched to a remote e.g. customer care center]
WBEM: Web Based Enterprise Management [component of NetPC platform management information technologies]
WC: Wireless Carrier [entity providing wireless services]
WCSO: Worldwide Customer Support Operations [HP entity]
WDM: Wavelength Divion Multiplexing
WILL: Wireless (in the) Local Loop [aka radio in the local loop, operating with a wireless accessed but fixed subscriber unit per subscriber, supports voice, fax or low speed data connections, by Motorola]
WIMAN: Wireless MAN [developed by Altvater, with up to 128kb/s]
WIN: (German) Wissenschaftsnetz [central component of the DFN]
WINS: WIndows Name Service [by MS(3); cooperating with DNS]
WINTEL: WINdows/INTEL [nick name]
WISC: Wireless System Controller [provides radio channel control functions, serves as performance monitoring concentration point, see WiLL, by Motorola]
WLL: Wireless LocalLoop [see also DECT and CDMA; spanning the "dirty last mile" to the customer's handset]
WM: Workforce Management
WMI: Windows Management Interface [component of NetPC platform management information technologies]
WMS: Workflow Management System
WORM: Write Once - Read Multiple [second storage media]
WSF: Workstation Function block [provides the means to interpret TMN information for the management information user, includes support for interfacing to a human user, specified in CCITT Rec. M.3010]
WSY: Workstation System Division [HP Entity]
WTEC: Worldwide Technology Expert Center
WUPE: Wireless User Premises Equipment
WWDC: World Wide Developers Conference
WWW: World Wide Web [InterNet based hypertext document search system, (German) also Weiter Weltweit Warten]
WYSIWIS: What You See Is What I See
WYSIWYG: What You See Is What You Get

X

X.20: [(German) spezifiziert die Schnittstelle zwischen DTE und DCE fuer Start/Stop-Betrieb in oeffentlichen Datennetzen]
X.21: [(German) spezifiziert die Schnittstelle zwischen Datenendeinrichtungen und Datenuebertragungseinrichtungen fuer Synchronverfahren in oeffentlichen Datennetzen]
X.25: [packet switched data service, with channels up to 64kb/s, based on the three lower Levels of the OSI model, see also DATEX-P and CONS]
X.31: [transfer (interface) between ISDN and X.25]
X.75: [signalising protocol between X.25 switches]
X.400: [mailing protocol, OSI(1) standard]
X.500: [public directory service, e.g. DNS, OSI(1) standard]
XBM: X BitMap graphics file format [standard for (monochrome) bitmap image files in the X Window system, see also GIF]
XDR: eXternal Data Representation [Standard for machine independant data structure representation]
XFDN: X/Open FDN
XML: eXtensible Markup Language [next generation HTML]
XMP: X/Open Management Protocol [provides the TMN application developer with a C-language interface to the underlying CMIS/CMIP and SNMP protocol services; XMP APIs use XOM objects as parameters]
XNS: Xerox Network Systems
XOM: X/Open OSI abstract-data Manipulation [a C-language interface designed for for use with application-specific FDN that provide FDN services, such as X.400 and FDN; XOM FDNs provide functions for accessing managed objects and shield programmers from the complexity of the FDN data types in the FDN; XOM API and XOM code generator are part of HP OV DMagent developer's kit]
XPG: X/Open Portability Guide
XPM: X11 color PixMap format
XTI: X/Open Transport Interface
XWD: X11 Window Dump

Y

Y2kC

Year 2000 Compliancy

Z

ZAT: Zielorientiertes Arbeiten im Team (German) [4 days training, offered by HP Germany Training & Consulting]
ZAW: Zero Administration Windows [by Microsoft]
ZD: Zeitmultiplex-Datenumsetzer (German)
ZEPM: ZentralEinheit fuer Pruefen, Messen und Melden (German)
ZG: Zeichengabe (German)
ZGS: Nr.7 Zeichengabesystem Nr. 7 (German)[aka SS7]
ZZK: Zentraler Zeichengabekanal (German) [allows to signal up to 1600 voice lines]

Any suggestions concerning this list are welcome by
Volker Radek, HP BHG, PSO Telecom, 23Jun98