Afkortingen die gebruikt worden in de telecominucatie sector,

-=a=-
AC              Alternating current
ADPCM           Adaptive differential pulse code modulation
AF              Audio frequency
ALU             Arithmetic logic unit
AM              Amplitude modulation
AMI             Alternate mark inversion
AMPS            Advanced mobile phone system
ANSI            American National Standards Institute
AQL             Acceptable quality level
ASCII           American Standard Code for Information Interchange
ASPEN           Automatic speech exchange network

-=b=-
BABT            British Approvals board for Telecommunications
BCD             Binary coded decimal
BFO             Beat frequency oscillator
BP              Band pass (filter)
BRI             Basic rate interface
BS              British Standard
BSI             British Standards Institution
BT              British Telecom
BVH             Buried via hole

-=c=-
CAI             Common air interface
CAS             Channel associated switching
CB              Citizen's band
CCIR            International Radio Consultative Committee
CCITT           International Telegraph & Telephone Consultative Committee
CCS             Common-channel signalling
CD              Collision detection
CDMA            Code diversion multiple access
CEC             Commission of European Communities
CEN             European Commission for Normalisation
CENELEC            "         "       "  Electrotechnical Normalisation
CEPT            European Committee of Postal and Telecoms Administration
CMI             Coded mark inversion
CMOS            Complementary metal oxide semiconductor
CO              Central Office
Codec           Coder/decoder
CPE             Customer Premises Equipment
CPU             Central Processing Unit
Cr              Chromium (chemical symbol)
CRC             Cyclic redundancy check
CRT             Cathode Ray Tube
CSMA            Carrier Sense Multiple Access
CT              Cordless Telephone
CTCSS           Continuous tone controlled signalling system
CTS             Conformance testing services
CW              Continuous wave

-=d=-
DASS            Digital access signalling system
dB              Decibel
DBE             Digital baseband equipment
DC              Direct current
DCE             Data circuit equipment
DCE             Data communications equipment
DDI             Direct Dialling In
DDSN            Digital derived services network
DECT            Digital European cordless telephone
d.i.l.          Dual-in-line
DIV             Data in voice
DLE             Digital local exchange
DMSU            Digital main switching unit
DOV             Data over voice
DPCM            Differential pulse code modulation
DPNSS           Digital private network signalling system
DPSK            Differential phase shift keying
DSB             Double sideband
DSC             Direct switching centre
DTE             Data terminating equipment
DTI             Department of Trade & Industry
DTMF            Dual-tone multifrequency
DUP             Data user port
 

-=e=-
EBDIC           Extended binary-coded decimal interchange code
EC              European Commission
ECTIC              "         "      for Information Technology Certification
ECL             Emitter coupled logic
ECMA            European Computer Manufacturers Association
EDI             Electronic data interface
EEC             European Economic Community
EFTA            European Free Trade Association
EFWS            Electronic four-wire switch
EIRP            Equivalent isotropic radiated power
em              Electromagnetic
EMC                    "        compatibility
EN              European standard specification
ENV                "        "          "        (draft)
es              Electrostatic
ESPA            European Selective Paging Manufacturers Assocaition
ETS             European Telecommunications Standard
ETSI                "           "           Standards Institution


-=f=-

F               Farad (unit of capacitance)
FAW             Frame alignment word
FAX             Facsimile transmission
FCC             Federal Communications Commission
FCS             Frame check sequence
FDM             Frequency division multiplex
FEC             Forward error control
FEP             Front-end processor
FET             Field-effect transistor
FFSK            Fast frequency shift keying
FIFO            First in-first out
FIR             Finite impulse response
FISU            Fill-in signal unit
FM              Frequency modulation
FOCC            Forward control channel
FSK             Frequency shift keying
FSVFT           Frequency shift multichannel voice-frequency telegraphy
FVC             Forward voice channel

-=g=-

GHz             Hz x 10^9 (gigahertz)
GMSK            Gaussian minimum shift keying
GSC             Group switching centre
GSM             Groupe speciale mobile (French)
GTO             Gate turn-off (transistor switch)

-=h=-
H               Henry - unit of inductance
HDB             High-density Bipolar
HP              High-pass (filter)
Hz              Hertz (cycles per second)

-=i=-
IA              International alphabet
ID              Inner diameter
IDC             Insulation displacement connector
IEC             International Technical Commission
I-ETS           Interim European Telecommunications Standard
IF              Intermediate frequency
IFRB            International Frequencies Registration Board
IIR             Infinite impulse response
IN              Intelligent network
ISDN            Integrated Services Digital Network
ISO             International Standards Organisation
ISPBX           Integrated services private branch exchange
IT              Information Technology
ITSTC                "          "      Steering Committee
ITU             International Telecommunications Union
IVDW            Integrated voice data workstation
 
-=j=-
JCW             Justification control word
JDT             Justification time slot
 
-=k=-
kHz             Hz x 10^3 (kilohertz)

-=l=-
LAN             Local area network
LAP             Local access protocol
LCD             Liquid crystal display
LCS             Line control substitution
LDR             Light dependant resistor
LE              Local exchange
LED             Light emitting diode
LOGOS           Programming language for LCS and EFWS
LP              Low pass (filter)
LRC             Longitudinal redundancy check
LSB             Lower sideband
LSI             Large scale integration
LSSU            Link status signal unit
 
-=m=-
MDSN            Managed data service network
MHz             Hz x 10^6 (megaherz)
MLB             Multi layer board
MNP             Microcom network protocol
Modem           Modulator/demodulator
MOSFET          Metal oxide semiconductor FET
MPSK            Multiphase shift keying
MSC             Main swirching centre
MSI             Medium scale integration
MSN             Multiple subscriber number
MSRC            Metrology and Standards Requirements Committee
MSU             Message signal unit
MTBF            Mean time between faliures
MTG             Multitone generator
MTP             Message transfer port
MTTR            Mean time to repair
MUX             Multiplexer
 
-=n=-
NDC             Standard National Number
NEL             National Engineering Laboratory
NET             European Telecommunications Standard
NEXT            Near end cross talk
NF              Noise figure
nF              F x 10^-9 (nanofarad)
nH              H x 10^-9 (nanohenry)
Ni              Nickel (chemical signal)
nm              Metres x 10^-9 (nanometre)
NPL             National Physics Laboratory
NRZ             Non return to zero
NT              Network termination
NTC             Negative temperature coefficient
NWML            National Weights and Measures Laboratory
 
-=o=-
OD              Outer diameter
Oftel           Office of Telecommunications
ONA             Open network architechture
ONP             Open network provision
OSI             Open Systems Interconnection


-=p=-
PABX            Private automatic branch exchange
PAD             Packet assembler/disassembler
PAL             Phased alternate line
PAL             Programmable array logic
PAM             Pulse amplitude modulation
PBX             Private branch exchange
p.c.b.          Printed circuit board
PCM             Pulse code modulation
PCN             Personal communications network
PCO             Public call office
pF              F x 10^-12 (picofarad)
PHILA           Phreakers and Hackers in the London Area (group)
PIN             Personal identification number
PIN             P intrinsic n junction
PLD             Programmable logic device
PLL             Phase locked loop
PM              Pulse modulation
PMR             Private mobile radio
pn              junction of +ve and -ve minority carrier semiconductor 
                materials
POCSAG          Post Office Code Standardization Advisory Group
ppm             Parts per million
PRI             Primary rate interface
PROM            Programmable ROM
ps              seconds x 10^-12 (picoseconds)
PSE             Packet switch exchange
PSK             Phase shift keying
PSN             Public switched network
PSO             Public service operator
PSPDN           Packet switched public data network
PSS             Packet switched service
PSTN            Public switched telephone network
PTC             Positive temperature coefficient
PTH             Plated through hole
PTO             Public telephone network operator
PTT             Post, telephone, telegraphy

-=q=-
Q (italic)      Quality factor of inductance
QAM             Quadrature amplitude modulation
QPSK            Quaternary phase shift keying
 
-=r=- 
RACE            Research and Development in Advanced Communications in Europe
RAM             Random access memory
RECC            Reverse control channel
RF              Radio frequency
RIT             Receiver incremental tuning
RMS             Root mean square
ROM             Read only memory
RSGB            Radio Society of Great Britain
RTTY            Radio teletype
RVC             Reverse voice channel
 
-=s=-
SAW             Surface acoustic wave
Sb              Anitmony (chemical symbol)
SCOP            System contol and operating position
SCP             System control processor
SCR             Silicon controlled rectifier
SCVF            Single channel voice frequency
SDH             Synchronous digital heirachy
SDLC            Synchronous data link control
SEMKO           Swedish standards authority
SES             Ship earth station
s.i.l.          Single in line
Sn              Tin (chemical symbol)
SN              Subscriber number
S/N             Signal to noise ratio
SONET           Synchronous optical network
SPC             Stored program control
SRBP            Synthetic resin bonded paper
SS7             Signalling system no.7
SSAC            Signalling system alternating current
SSB             Single sideband
SSBSC             "        "    supressed carrier
SSR             Source select register
STS             Space time space (digital switching)
SWG             Standard wire guage
 
-=t=-
TACS            Total access communications system
TASI            Time assigned speech interpolation
TAT             Trans Atalantic telephone
TC              Temperature coefficient
TDM             Time division multiplex
TDMA              "      "        "     access
TE              Terminal equipment
TMA             Telecommunications Managers Association
TNA             Telex network adapter
TRAC            Technical Recommendations Advisory Committee
TRS             Transmitter repeater station
TS              Time slot
TSS             Testing support services
TST             Time space time (digital switching)
TTL             Transistor transistor logic
TUP             Telephone user part
TWT             Travelling wave tube
 
-=u=-
UART            Universal asynchronous receiver/transmitter
uF              F x 10^-6 (microfarad)
UHF             Ultra high frequency
uM              Metres x 10^-6 (micrometre)
UL              Underwriters Listed (USA standard)
USB             Upper sideband
 
-=v=-
Vbe             Voltage base emitter
VAN             Value added network
VCO             Voltage controlled oscillator
VDE             German Standards Authority
VDR             Voltage dependent resistor
VDU             Visual display unit
VHF             Very high frequency
VRC             Vertical redundancy check
VSB             Vestigial sideband
VSWR            Voltage standing wave ratio
 
-=w=-
WAN             Wide area network

-=x=-

-=y=-

-=z=-

Bezoek ook eens:,

Warning: main(http://www.aseweb.nl/links_include.php?tekst=1) [function.main]: failed to open stream: HTTP request failed! HTTP/1.1 403 Forbidden in /www/a/a/r/aardbaan.com/public_html/phreak/include/onder.php on line 7

Warning: main(http://www.aseweb.nl/links_include.php?tekst=1) [function.main]: failed to open stream: HTTP request failed! HTTP/1.1 403 Forbidden in /www/a/a/r/aardbaan.com/public_html/phreak/include/onder.php on line 7

Warning: main() [function.include]: Failed opening 'http://www.aseweb.nl/links_include.php?tekst=1' for inclusion (include_path='.:/usr/local/share/pear:/www/scripts/webshop:/www/scripts/public') in /www/a/a/r/aardbaan.com/public_html/phreak/include/onder.php on line 7

Ons Forum,

Stuur deze pagina naar een bekende;
Met deze functie kunt u deze pagina snel naar een bekende van u toesturen.