Thut ng vin thng

THUT NG VIN THNG

A-AH

AA Abreviated Addressing

nh a ch vit tt AA Absolute (access) address

a ch truy nhp tuyt i AALU Arithmetic and Logical Unit

n v s hc v logic AAMPS Advanced Mobile Phone System

H thng in thoi di ng tin tin AAR Automatic Alternate Routing

nh tuyn thay th t ng AARE

A-associate-response

p ng lin kt A AARQ A-associate-request

yu cu lin kt A AAS Adaptive Antenna

Anten p ng AAS Automatic Addressing System

H thng nh a ch t ng AAV Alternate Access Vendors

Cc hng truy nhp thay th ABDS Adaptive break-in Differential Sensitivity (Series G)

nhy chnh lch ngt thch ng ABM Asynchronous Balanced Mode (HDLC)

Ch cn bng khng ng b ABR Answer Bid Ratio (Series Q)

H s lnh tr li

ABR Available Bit Rate (ATM)

Tc bit kh dng ABRT A-abort (Series X)

Khi d liu giao thc ng dng a-abort AC Access Control (Token Ring, FDDI)

iu khin truy nhp ACA PPU Alter Context Acknowledge PPDU

PPDU bo nhn ng cnh thay th ACB Access Barred Signal (Series Q)

Tn hiu chn truy nhp ACC Austrian CCITT Committee

y ban CCITT nc o ACC Automatic Congestion Control

iu khin tc nghn t ng ACCH Associated Control Channel

Knh iu khin gn lin ACD Automatic Call Distribution

Phn b cuc gi t ng ACE Automatic Cross-connection Equipment (also known as AXE)

Thit b kt ni cho t ng (cn gi l AXE) ACF Advanced Communications Function

Chc nng truyn thng cao cp ACITS Advisory Committee on

Information Technology Standardisation (SOG-IT)

y ban t vn v tiu chun ha cng ngh thng tin ACK Acknowledge(ment) (Series Q,T)

Bo nhn ACM Address Complete Message (Series Q)

Tin bo a ch hon chnh ACPM Association Control Protocol Machine

C ch giao thc iu khin kt hp ACPPU Alter Context PPDU (Series X)

PPDU ca vn cnh bin i ACSE Association Control Service Element (Series T)

Mi trng dch v iu khin kt hp ACTE Approvals Committee for Terminal Equipment

Hi ng ph chun thit b u cui ACTOM Advisory Committee on Technical and Operational Matters

(of Inmarsat)

y ban t vn v cc vn k thut v khai thc ACTS Advisory Committee on

Information Technology Standardisation (SOG-IT)

y ban t vn v tiu chun ha cng ngh thng tin ACU Acknowledgement Signal Unit (Series Q)

Khi tn hiu bo nhn ADC Address Complete Signal Charge (Series Q)

Thc hin a ch hon chnh tnh cc ADC Analog-to-Digital Converter (Series P)

B chuyn i tng t s ADCCP Advanced Data Communications Control Procedures (ANSI)

Cc th tc iu khin truyn s liu tin tin (ANSI) ADI Address Incomplete Signal (Series Q)

Tn hiu a ch khng hon chnh ADM Adaptive Delta Modulation

iu ch Delta thch ng ADM Assynchronous Disconnected Mode

Ch ngt kt ni ng b ADMD Administration Management Domain (Series F, X)

Min qun l hnh chnh ADN Address Complete Signal, No charge (Series Q)

Tn hiu a ch hon chnh khng tnh cc ADP Answer Detection Pattern (Series V)

M hnh pht hin ngi tr li ADPCM Adaptive Differential Pulse Code Modulation

iu xung m (PCM) vi sai thch ng ADPFH Average of Daily Peak Full Hour (Series E)

Trung bnh ca gi cao im hon ton trong ngy ADPH Average Daily Peak Hour (Series E)

Gi cao im trung bnh trong ngy ADSL Asymmetric Digital Subscriber Line

ng dy thu bao s khng i xng ADU Antennuation Distortion Unit (Series P)

n v mo do sung hao ADX Address Complete Signal, Coin Box (Series Q)

Tn hiu a ch hon chnh, hp b tin AE Application Entity (Series Q, X)

Thc th ng dng AE Associated Equipments (Series F)

Cc thit b lin kt AECMA Association Europenne des Constructeurs de Matriel

Aerospatial

(European Association for the Construction

of Aero-Space Equipment)

Hip hi chu u v thit k thit b hng khng v tr (ting Php)

AEE Asociacin Electrotcnica (Electrotechnical Association)

Hip hi k thut in t AEF Address Extension Facility (Series X)

Phng tin m rng a ch AEF Address Extension Field (Series I)

Trng m rng a ch AENOR Asociacin Espanla de Normalization (Standard Association,

Spain)

Hip hi tiu chun ca Ty Ban Nha AERM Alighnment Error Rate Monitor (Series Q)

B gim st h thng s li ng chnh AES Aircraft Earth Station (Series Q)

Trm mt t hng khng AF Address field (Series I, X)

Trng a ch AFC Address-complete signal, Subscriber-Free Charge (Series Q)

Tn hiu a ch hon chnh thu bao t do, c tnh cc AFI Authority and Format Identifier (Series I, Q, X)

Phn t nhn dng thm quyn v khun dng

AFN Address-Complete Signal, Subscriber-Free, No Charge (Series Q)

Tn hiu a ch hon chnh thu bao t do, khng tnh cc AFNOR Association Francaice de Normalizacin

(Standard Association, France)

Hip hi tiu chun ca Php AFUTT Association Francaie des Utilisateurs du Telesphone

et des Tlcommunications

(French Telegraphs and Telephone Users Association)

Hip hi nhng ngi s dng bo - thoi ca Php AFX Address-complete signal, Subscriber-free charge, Coin box

(Series Q)

Tn hiu a ch hon chnh, thu bao t do, hp b tin AGF Additional Global Functions (Series I)

Cc chc nng ton cu ph tr AHLF Additional Higher Layer Function (Series I)

Chc nng lp cao ph tr

AI-AX

Ai Action indicator (Series Q)

B ch th hnh vi AI Artificial Intelligence

Tr tu nhn to AIN Advanced Intelligent Network

Mng thng minh cao cp AIS Alarm Indication Signal

Tn hiu ch th cnh bo AITS Acknowledged Information Transfer Service (ITU - T)

Dch v chuyn ti thng tin c bo nhn (ITU - T) AK Data Acknowledgement TPDU (Series X)

TPDU bo nhn d liu AK TPDU Data Acknowledgement (Series X)

Bo nhn d liu

AL Local Acknowledgement Time (Series X)

Thi gian bo nhn cc b ALE Approval Liaison Engineer (UK)

K s thng tin lin lc c ph chun (Anh) ALLF Additional Low Layer Function (Series I)

Chc nng lp thp ph tr ALP Abstract Local Primitive (Series X)

Nguyn gc cc b tru tng AM Amplitude Modulation

iu ch bin , iu bin AMI Alternate Mark Inversion (Series O)

o du lun phin AMPS Advanced Mobile Phone System

H thng in thoi di ng tin tin AMVFT Amplitude-modulated Voice-frequency Telegraph (Series R)

in bo tn s thoi iu bin ANC Answer signal, Charge (Series Q)

Tn hiu tr li, c tnh cc ANI Automatic Number Identification (ISDN)

Nhn dng s gi t ng ANN Answer Signal, No Charge (Series Q)

Tn hiu tr li, khng tnh cc ANR Automatic Network Routing

nh tuyn mng t ng ANSI American National Standards Institute

Vin tiu chun quc gia Hoa K ANU Answer Signal, Unqualifield (Series Q)

Tn hiu tr li, v iu kin AOC Advice of Charge (Series I)

Thit b tnh cc AP Access Point (UPT)

im truy nhp (UPT) AP Application Program

Chng trnh ng dng

APB Active Position Backward (Series T)

Ngc tr li v tr tch cc APC Adaptive dictive Coding (Series E, Q)

M ha bo trc thch ng APCI Application-Protocol-Control-Information (Series X)

Thng tin iu khin giao thc ng dng APD Active Position Down (Series T, X)

Pha di v tr tch cc APDU Application Protocol Data Unit

Khi d liu giao thc ng dng APF Active Positon Forward (Series T)

Pha trc v tr tch cc APH Active Postion Home (Series T)

Thng tr v tr tch cc APL Average Picture Level (Series N)

Mc nh trung bnh APL Analogue Private Line

ng dy ring analog APP Applications Portability Profile

c trng di chuyn c ca cc ng dng APR Active Position Return (Series T, X)

Quay v v tr tch cc APS Automatic Protection Switching

Chuyn mch bo v t ng APT Telephony Applications System

H thng cc chng trnh ng dng in thoi APU Active Position Up (Series T)

Pha trn v tr tch cc AR Remote Acknowledge Time (Series X)

Thi gian bo nhn t xa ARA Access Registration Point (UPT)

im ng k truy nhp ARF Alternative routing from (Series E)

nh tuyn thay th t

ARM Asynchronous Response Mode (HDLC)

Phng thc p ng khng ng b,

ch tr li khng ng b (HDLC) ARP PPDU Abnormal Release Provider PPDU (Series X)

PPDU nh cung ng gii ta bt thng ARQ Automatic Repeat Request (Series T)

Yu cu lp li t ng ARQ Automatic Request Repetition

Lp li yu cu t ng ARR Automatic Rerouting (Series E)

Ti nh tuyn t ng ART Alternative Routing To (Series E)

nh tuyn thay th ti... ART Autorit de Rgulation des Tlcommunications

(French Approval Authority)

C quan quyn lc iu hnh vin thng Php ARU PPDU Abnormal Release User PPDU (Series X)

PPDU ngi dng gii tr bt thng AS Assessment Services

Cc dch v nh mc/cc dch v nh gi ASCII American Standard Code for Information Interchange

M tiu chun M dng trao i thng tin ASD Adverse State Detector (Series V)

B pht hin trng thi bt li (ngc) ASE Application-Service Element (Series Q)

Mi trng dch v ng dng ASIC Application Specific Integrated Circuit

Mch t hp c ng dng c bit ASN.1 Abstract Syntax Notation One (Series Q, T, X)

Ch gii c php tru tng s 1 ASP Abstract Service Primitive (Series X)

Nguyn gc dch v tru tng ASP Advanced Speech Processor

B x l ting ni tin tin

ASP Assignment Source Point (Series Q)

im ngun phn nh ASR Answer Seizure ratio (Series E)

T l chim pha tr li ASVD Analogue Simultaneous Voice and Data

Ting ni v s liu m phng analog ATC Additional Trunk Capacity (Series E)

Dung lng trung k b sung ATDM Asynchronous Time Division Multiplexing

Ghp knh chia thi gian khng ng b ATIC Time Assignment With Sample Interpolation (Series G)

Gn thi gian vi ni suy mu ATM Asynchronous Transfer Mode

Phng thc chuyn ti khng ng b ATME Automatic Transmission Measuring and Signalling Testing

Equipment (Series M, Q)

Thit b th bo hiu v o truyn dn bo hiu ATME Automatic Transmission Measuring Equipment (Series M)

Thit b o th truyn dn t ng ATRA Austrian Telecommunications Regulation Authority

C quan iu hnh vin thng ca o ATS Air Traffic Services (Series Q)

Cc dch v vn chuyn hng khng ATSC Australian Telecommunications Standardisation Committee

y ban tiu chun ha c AU Access Unit (Series F, Q, T, X)

Khi truy nhp AU Administrative Unit (Series G)

Khi qun l hnh chnh AU PTR Administrative Unit Pointer (Series G)

Khi qun l hnh chnh AUC Authenticication Centre

Trung tm chng thc AUI Attachment Unit Interface

Giao din vi khi gn sn

AUP Aceptable Use Policy

Chnh sch s dng chp nhn c AVA Attribute Value Assertion (Series X)

Gn gi tr thuc tnh AVK Audio/Video Kernel

Li m thanh/Video AVL Automatic Vehicle Location

nh v xe c t ng AVM Audio Visual Management

Qun l bng nghe nhn AWG American Wire Gause

C dy tiu chun M, tiu chun dy dn M AXE Automatic Cross-Connection Equipment (also known as ACE)

Thit b kt ni cho t ng (cn c gi l ACE)

B

B-CDMA Broaband Code Division Multiple Access

a truy nhp phn chia theo m bng rng, CDMA bng rng

B-ICI Broaband Intercarrier Interface (ATM)

Giao din gia cc nh khai thc bng rng B-ISDN Broadband ISDN

ISDN bng rng B-LE Broadband Loacal Exchange (B-ISDN)

Tng i ni ht bng rng (B-ISDN) B-TA Broadband Terminal Adapter (B-ISDN)

B thch ng u cui bng rng (B-ISDN) B-TE Broaband Terminal Equipment (B-ISDN)

Thit b u cui bng rng (B-ISDN) BA Block Address (Series H)

a ch khi BA Balanced Asynchronous (HDLC)

Khng ng b cn bng (HDLC)

BABT British Approvals Board for Telecommunications

Hi ng ph chun vin thng Anh Quc BAC Balanced Asynchronous Class (Series V)

Lp khng ng b cn bng BAC Block Acknowledged Counter (Series Q)

B m c bo nhn theo khi BAC Buffer Address Counting

Tnh cc a ch m BACE Basic Automatic Checkout Equipment

Thit b kim tra t ng c bn BACK Bus Acknowledge

Bo nhn, theo Bus BACP Bandwidth Allocation Control Protocol (PPP, ISDN)

Giao thc Iu khin phn phi di thng (PPP, ISDN) BACT Advisory Committee On Telecommunications

For Small Businesses (UK)

y ban t vn v vin thng cho cc doanh nghip nh (Anh Quc)

BAE Beacon Antenna Equipment

Thit b anten ca pha v tuyn BAI Bus Address Incresement Inhibit

Cm tng a ch Bus BAIC Barring of All Incoming Calls

Chn tt c cc cuc gi n BAID Boolean Array Identifier

B nhn dng bng Bool BAKOM Bundesamt fur Post und Telekommunikation

(Federal Office for Communication - Switzerland)

Vn phng Bu chnh Vin thng Thy S BAL Balance

S cn bng BAL Basic Assembler Language

Hp ng c s, ngn ng Assembler c s

BALUN Balancing Unit

Khi cn bng BAM Basic Access Method

Phng php truy nhp c bn BAN Bionics Adaptive Network

Mng thch ng phng sinh hc BAOC Barring of All Outgoing Calls

Chn tt c cc cuc gi n BAP Bandwidth Allocation Protocol

Giao thc phn phi di thng BAPT Bundesamt fur Post und Telekommunikation

(Federal Office for Post and Telecommunication - Germany)

C quan Lin bang v Bu chnh v Vin thng ca c BAR Buffer Address Register

B ghi a ch m BAS Bit Rate Allocation Signal (Series G, H)

Tn hiu gn theo tc bit BASIC Beginners All-purpose Symbolic Instruction Code

M lnh theo k hiu vn nng dng cho ngi mi lp trnh

BASN Block-Acknowledged Sequence Number (Series Q)

S chui c bo nhn theo khi BBA Bus-to-Bus Access

Truy nhp gia cc Bus BBC Back-to-Back Connection

Kt ni lng vi lng (my) BBC British Broadcasting Corporation

Tp on pht thanh truyn hnh Anh BBC Broadband Bearer Capability

Kh nng mng bng rng BBR Blocked By Reception Of The Bloking Signal (Series Q)

B chn do thu c tn hiu chn BBS Bloked By Sending The Blocking Signal (Series Q)

B chn do gi i tn hiu chn

BC Bearer Capability (Series Q, T, V)

Kh nng mng, dung lng mng BC Buffer Control (Series H)

iu khin b m BCC Basic Connection Components (Series I)

Cc cu kin kt ni c bn BCC Blocked-Completed Counter (Series Q)

m cc khi hon chnh BCCH Broadcast Control Channel

Knh iu khin pht qung b BCD Binary Coded Decimal (ATM)

S thp phn m ha nh phn BCLB Broadband Connectionless Bearer Service (ATM)

Dch v mng phi lin kt bng rng (trong ATM) BCOB Broadband Connection-Oriented Bearer Service (ATM)

Dch v mang nh hng ni kt bng rng BCSN Bloked-Completed Sequence Number (Series Q)

S chui ca cc khi hon chnh BCUG Bilateral Closed User Group (Series Q)

Nhm khch hng khp kn song phng BCUGOA Bilateral Closed User Group With Outgoing Access (Series

Q)

Nhm khch hng khp kn song phng vi truy nhp gi ra

BDT Telecommunication Development Beareau of the ITU

Vn phng pht trin vin thng ca ITU BER (T) Bit Error Rate (Test)

H s li khi bt (trong o th) BHCA Busy Hour Call Attemps

Cc cuc gi th gi cao im BHLF Basic High Layer Function

Chc nng lp cao c bn BHLI Broaband High Layer Information

Thng tin lp cao bng rng

Bi Signalling 1D Assigned By Exchange B

Bo hiu 1D do knh B gn BIB Backward Indicator Bit (Series Q)

Bt ca b ch th hng ngc BIC Bearer Identification Code (Series X)

M nhn dng vt mang BIP Bit Interleaved Parity (Series G)

Ngang bng chn l xen bt BIPT Belgian Institute for Posts and Telecommunications

Hc vin Bu chnh Vin thng ca B BISUP Broadband ISDN Users Part

Phn ngi s dng ISDN bng rng BLER(T) Block Error Rate (Test)

H s li khi bt (o th) BMPT Bundesministerium fur Post und Telekommunikation

(Federal

Ministry for Posts and Telecommunications, Germany)

B Bu chnh Vin thng ton lin bang (c) BNS Broadband Network Service

Dch v mng bng rng BNT Groupe Belge des Normes de Tlcommunications or

Belgium Telecommunications Standards group

Nhm tiu chun ha vin thng ca B BOM Beginning of Message

Bt u bn tin BORSCHT Battery feed Overvoltage Protection, Ringing Superision

Hybrid and Testing Coding/Decoding BPDU Bridge Protocol Data Node (ATM)

BPH Break Permitted Here (Series T)

Cho php ngt ti y BPP Bridge Port Pair (ATM)

Cp cng cu BPSK Binary Phase-Shift Keying (Series Q)

Kha dch pha nh phn BRC Background Revision Control (Series H)

iu khin duyt li nn BRI Basic Rate Interface (ISDN)

Giao din tc c bn (ISDN) BRITE Basic Rate Interface Transmission Equipment

Thit b truyn dn ca giao din tc c bn BRLU Broadband Remote Line Unit

Khi ng dy u xa bng rng BS Bearer Services

Dch v mang BS Base Station

Trm gc BSC Base Station Controller

B iu khin trm gc BSGL Branch System General Licence (UK)

Giy php ph thng cho cc h thng c quan (Anh) BSI British Standards Institute

Vin tiu chun Anh Quc BSI Bit Sequence Independence (Series H)

Tnh c lp chui bt BSIC Base Transceiver Station Identity Code

M nhn dng trm thu pht gc BSM Backward Set-up Message (Series Q)

Tin bo thit lp hng nghch BSN Backward Sequence Number (Series Q)

S chui hng nghch BSNR Backward Sequence Number Received (Series Q)

S chui hng nghch c thu BSNT Backward Sequence Number Of Next SU to be transmitted

(Series Q)

S chui hng nghch ca SU k sau cn c pht BSS Basic Synchronised Subset

H thng ph c bn c ng b ha

BSS Broadband Switching System

H thng chuyn mch bng rng BSS Base Station System

H thng trm gc BSS Broadcasting-Satellite Service

Dch v v tinh qung b BSSMAP Base Station Systems Management Application Part

Phn ng dng qun l cc h thng trm gc BSU Bearer Switchover Unit (Series R)

Khi chuyn giao vt mang BT Burst Tolerance (ATM)

Dung sai bc pht, bng n (ATM) BT Business Telecommunications (as used by ETSI) or British

Telecom

Vin thng doanh nghip (m ETSI hay dng)

hoc Vin thng Anh Quc BT Bridge Taps (Series G)

Cc nhnh bc cu BTNR British Telecom Network Requirement

Yu cu mng ca vin thng Anh Quc BTR British Telecom Requirement

Yu cu ca Vin thng Anh BTS Base Transceiver Station

Trm thu pht gc BUC Background Update Control (Series H)

iu khin vic cp nht nn BUS Broadcast and Unknown Server

Server qung b v khng c bit BW Bandwidth

Di thng, rng di

C-CD

C Conditional/Consumer (Series T)

iu kin/Tiu th C/N Carrier To Noise Ratio

H s sng mang trn tp m C/R Command/Response Bit (Series Q, V)

Bt lnh/p ng CA Cerification Authority (Series X)

Thm quyn xc nhn CA Contractual Agreement (Series F, X)

Tha thun theo hp ng CAA Civil Aviation Authority

C quan hng khng dn dng CAAA Computer-Aided Automatic Assembly

T ng lp t bng my tnh CABS Carrier Access Billing System

H thng tnh cc truy nhp nh khai thc CAC Connection Admission Control (ATM)

iu khin nhp kt ni, cho kt ni (ATM) CACA Computer-Aided Circuit Analysis

Phn tch mch nh my tnh CAD Computer Aided Design

Thit k bng my tnh CAD/CAM Computer/Aided Design/Computer-Aided Manufacture

Thit k bng my tnh/Sn xut c tr gip ca my tnh CAE Computer-Aided Engineering

Thit k k thut bng my tnh CAI Common Air Interface

Giao din v tuyn chung CAI Charge Advice Information (Series Q)

Thng bo ca thit b tnh cc CAM Call Accepted Message (Series X)

Tin bo chp nhn cuc gi CAMA Centralized Automatic Message Accounting

Tin bo tnh cc t ng tp trung ha

CAMEL Customised Applications for Mobile Network Enhanced Logic

Mch logic cao cp ca nhng ng dng

theo yu cu khch hng mng di ng CAN Cancel (Series T)

Hy b CANELEC Comit Europen de Normalisation Electrotechnique

(European Electrotechnical Standards Commitee)

y ban tiu chun ha k thut in chu u CAP CAMEL Application Protocol

Giao thc ng dng CAMEL CAP Carrierless Amplitude/Phase Modulation

iu bin/Pha khng c sng mang CAPI Common ISDN API

API ca mng ISDN thng dng CARS Community Antenna Relay Service

Dch v chuyn tip theo anten cng ng CAS Channel Associated Signalling

Bo hiu i theo knh CAS Cordless Access Service

Dch v truy nhp khng dy CASE Common Application Service Elements (Series T)

Cc mi trng dch v ng dng chung CATV Cable Television also Community Antennae Television

Truyn hnh cp, cn gi l truyn hnh anten cng ng CAU Controlled Access Unit (Token Ring)

Thit b truy nhp c iu khin CAV Component Analog Video

Video Analog hp thnh CB Citizens Band

Bng tn nghip d CB1-3 Clear-back Signal No.1-No-3 (Series Q)

Tn hiu xa sau No.1, No.3 CBA Changeback Acknowledgement Signal (Series Q)

Tn hiu xa ngc

CBD Changeback Declaration Signal (Series Q)

Tn hiu khai bo i ngc CBDS Connectionless Broadband Data Service (ETSI)

Dch v d liu bng rng phi lin kt (ETSI) CBK Clear-Back Signal (Series Q)

Tn hiu xa ngc CBNV Code Bit Number Variation (Series T)

Bin phn ca s bt m CBO Continuous Bit Stream Oriented (Series I)

nh hng lung bt lin tc CBR Constant Bit Rate (ATM)

Tc bt khng i (ATM) CBS Common Base Station

Trm gc chung CBX Computerised Branch Exchange

Tng i nhnh c my tnh ha CC Call Connected (Series X)

Cuc gi c kt ni CC Calling Channel (Series X)

Knh ch gi CC Call Control (Series Q)

iu khin cuc gi CC Character Code (Series T)

M k CC Clearing Cause (Series T)

Nguyn nhn xa CC Connection Confirm (Series X)

Ph chun kt ni CC Continuity-Check (Series Q)

Kim tra tnh lin tc CC Country Code (Series E, Q, X)

M quc gia, m nc CC Call Control Agent (Series Q)

Nhn vin iu khin cuc gi

CC TPDU Connection Confirm TPDU (Series X)

TPDU ph chun kt ni CCA CANELEC Certification Agreement

Tha thun cp chng ch CANELEC CCA Character Content Architecture (Series T)

Kin trc ni dung k t CCBS Completion Of Calls to Busy Subscriber

Hon tt th tc cc cuc gi ti mt thu bao bn CCC CANELEC Electronic Components Certification

Chng ch cc thit b in t CANELEC CCC Clear Channel Capability

Kh nng ca knh xa CCCH Common Control Channel

Knh iu khin chung CCF Call Control Function

Chc nng iu khin cuc gi CCF Continuity-Failure Signal (Series Q)

Tn hiu s c lin tc CCH Connections per Circuit per Hour

S kt ni ca mt mch trong mt gi CCH Continuity-Check Indicator (Series Q)

Phn t ch th kim tra lin tc CCH Control Channel (Series Q)

Knh iu khin CCI Continuity-Check Incoming (Series Q)

Kim tra lin tc i ti CCIR Comit Consultatif International des Radiocommunications

(Consultative Committee on International Radiocommunications) International body

y ban t vn v thng tin v tuyn quc t (C quan quc t) CCITT Comit Consultatif International Tlgraphique et Tlphonique

(Consultative Committee on International Telegraphy and Telephony) International body

y ban t vn v in bo in thoi quc t (C quan quc t)

CCL Calling Party Clear Signal (Series Q)

Tn hiu xa ca pha ch gi CCM Circuit Supervision Message (Series Q)

Tin bo gim st mch CCO Continuity-Check Outgoing (Series Q)

Tn hiu kim tra lin tc gi i CCP Call Confirmation Protocol (Series X)

Giao thc tun th cuc gi CCR Commitment Concurency And Recovery (Series X)

S xung t v s phc hi cam kt CCR Continuity-Check-Request Signal (Series Q)

Tn hiu yu cu kim tra tnh lin tc CCR Currn Cell Rate (ATM)

T l t bo hin thi CCS Common Channel Signaling

Bo hiu knh chung CCSN Common Channel Signalling Network (Series I, X)

Mng bo hiu knh chung CCSS Common Channel Signalling Systems (Series M)

Cc h thng bo hiu knh chung CCT Telephone Circuit (Series Q)

Mch in thoi CD Call Deflection

i hng cuc gi CD Collision Detection (LAN)

Pht hin xung t i u (mng LAN) CD Compact Disk

a Compact, a cng CD-ROM Compact Disk-Read Only Memory

a Compact, B nh ch c CDC Control Data Corporation

Hip hi d liu iu khin CDC Command Document Continue (Series T, U)

Tip tc vn bn lnh

CDCL Command Document Capability List (Series T)

Danh mc kh nng vn bn lnh CDD Command Document Discard (Series T)

Hy b vn bn lnh CDE Command Document End (Series T)

Kt thc vn bn lnh CDF Cutoff Decrease Factor

Yu t (h s) gim rt cuc gi CDI Called Line Identity (Series X)

Danh tnh ng dy b gi CDLI Called Line Identity (Series E, Q)

Danh tnh ng dy b gi CDMA Code Division Multiple Access

a truy nhp phn chia theo m CDPB Command Document Page Boundary (Series T)

Ti ng b vn bn lnh CDPD Cellular Digital Packet Data

D liu gi s ha ca mng t bo CDR Command Document Resynchronize (Series T)

Ti ng b vn bn lnh CDS Command Document Start (Series T, U)

Khi ng vn bn lnh CDT Credit (Series X)

Tn nhim CDUI Command Document User Information (Series T)

Thng tin khch hng ca vn bn lnh CDV Cell Delay Variation

Bin i thi gian tr t bo

CE-CM

CE Connection Element (Series I)

Mi trng kt ni CEB Comit Electrotechnique Belge

(Electrotechnical Committee, Belgium)

u ban k thut in t ca B CEC Commision of the European Commuty (ies)

y ban ca (cc) Hi ng chu u CED Called Station Identification (Series T)

Nhn dng trm b gi CEI Comitato Eletrotecnico Italiano (Electrotechnical Committee,

Italy)

u ban k thut in t ca Italia CEI Connection Endpoint Identifier (Series Q)

Phn t nhn dng im cui kt ni CEN Comit Europen de Normalisation Electrotechnique

(European Standards Committee)

y ban tiu chun ha chu u CEPT Confrence des Administrations Europennes

des Postes et Tlecomunications (European Conference of Posts and Telecommunications Administrations)

Hi ngh cc t chc bu chnh vin thng chu u CER Cell Error Ratio (ATM)

H s li t bo, h s li CES Circuit Emulation Service (ATM)

Dch v m phng mch CES Coast Earth Station (Series E, M, U)

Trm mt t duyn hi CES Connection Endpoint Suffix (Series Q)

Hu t im cui kt ni CESA Coast Earth Station Assignment (Series Q)

Phn phi trm mt t duyn hi CESDL Coast Station Low Speed Data (Series Q)

S liu tc thp ca trm mt t duyn hi CESI Centro Eletrotecnico Sperimentale Italiano (Italy)

Trung tm thc nghim k thut in t (Italia) CESI Coast Earth Station Interstation (Series Q)

Lin trm ca cc trm mt t duyn hi

CEST Coast Earth Station Telex (Series Q)

Telex ca trm mt t duyn hi CET Centro de Estudos des Telecomunicaes (Portugal)

Trung tm o to vin thng ca B o Nha CF Conversion Facility (Series F, S, T)

Phng tin bin i CFB Call Forward Busy

Cuc gi chuyn tip ang bn CFL Call-Failure Signal (Series Q)

Tn hiu bo hng cuc gi CFNR Call Forward No Reply

Cuc gi chuyn tip khng tr li CFP Formated Processable Content Architecture Levels (Series T)

nh dng cc mc kin trc c th x l c CFR Confirmation To Receive (Series T)

Khng nh thu CFU Call Forwarding Unconditional (Series I, Q)

Chuyn tip cuc gi v iu kin CG Charactor Generator

B to k t CGC Circuit Group Congestion (Series E, Q)

Tc nghn nhm mch CGC Circuit Group Control (Series Q)

iu khin nhm mch CGM Computer Graphics Metalfile (Series T)

Meta tp (siu tp) ha my tnh CGRR Circuit Reset Receipt (Series Q)

Nhn dng nhm mch ti xc lp CGRS Circuit Group Control (Series Q)

Gi nhm mch ti xc lp CGSSA Cellular Geographic Service Area

Vng dch v mng t bo theo a l CHAR Character (Series T)

K t

CHG Charging Message (Series Q)

Bn tin tnh cc CHM Changeover And Changeback Messages (Series Q)

Cc thng bo chuyn qua, chuyn li CI Cell Identity

Danh tnh t bo c trng , xc nhn CI Command Identifier (Series T)

Phn t nhn dng lnh CI Caoncatenation Indication (Series G)

Ch th s trng khp CIC Carrier Identification Code

M nhn dng nh khai thc CICS Customer Information Control System

H thng iu khin thng tin khch hng CID Caller Identification

Nhn dng my ch gi CIF Common Intermediate Format

Khun dng trung gian chung CIF Cell In Flight

Cc ang sn tm CIG Calling Subscriber Identification (Series T)

Nhn dng thu bao ch gi CIGRE International Conference On Large High Voltage Electric

Systems (Series K)

Hi ngh quc t v cc h thng in in p rt cao CIGREF Club Informatique des Grandes Enterpries Francaises

Cu lc b tin hc ca cc x nghip ln nc Php CIL Call Identification Line (Series T)

ng dy nhn dng cuc gi CILE Call Information Logging Equipment

Thit b ghi chp thng tin cuc gi CIMAP/CC Circuit Installation and Maintenance Asstance Package/Control

Center

H tr lp t v bo dng mch trn gi/Trung tm iu khin

CIMAP/SSC Circuit Installation and Maintenance Assitance Package/Special

Service Center

H tr lp t v bo dng mch trn gi/Trung tm dch v c bit

CIP Carrier Identification Parameter

Thng s nhn dng hng cung CIR Calling-Line-Identity-Request (Series Q)

Yu cu danh tnh ng dy ch gi CISPR International Specila Committee On Radio Interferece (Series G,

K)

y ban quc t c bit v can nhiu v tuyn CIX Commercial Internet Exchange

Tng i Internet thng mi CK Check Bits (Series Q)

Cc bt kim tra CL Connectionless Service (ATM)

Dch v khng kt ni CL Cursor left

Dch con tr sang tri CL Control Channel Of The Line System (Series G)

Knh iu khin (ca h thng ng dy) CL-1 Congestion Level 1 (Series E)

Mc tc nghn 1 CLASS Custom Local Area Signalling Services

Cc dch v bo hiu khu vc mua hng CLCD Clear Confirmation Delay (Series X)

Thi gian tr khng nh xa CLF Clear-Forward Signal (Series Q)

Tn hiu xa hng thun CLI Calling Line Identity/ Identification

Nhn dng/nhn dng ng dy ch gi CLI Command Length Indicator (Series T)

Phn t ch th di lnh CLID Calling Line Identification (ISDN, CLASS)

Nhn dng ng dy ch gi (ISDN, CLASS) CLIP Calling Line Identity sentation

Trnh by nhn dng ng dy ch gi

CLIR Calling Line Identitication Restriction

Hn ch nhn dng ng dy ch gi CLNP Connectionless Network Protocol (ISO, ITU-T)

Giao thc mng khng kt ni (ISO, ITU-T) CLNS Connectionless Network Service (ISO, ITU-T)

Dch v mng khng kt ni (ISO, ITU-T) CLONES Command Language On-line Entry System

H thng nhp trc tuyn ngn ng chung CLP Cell Loss Priority

u tin mt (t bo) CLR Cell Loss Ratio

H s mt /T l mt CLR Circuit Louness Rating (Series G)

nh mc vang ca mch CLRD Clear Request Delay (Series X)

Tr yu cu xa CLTS Connectionless-mode Transport Service

Dch v chuyn ti ch khng kt ni CM Conditional Mandatory Parameter (Series T)

Tham s lnh c iu kin CMB CRC Message Block (SeriesG)

Khi tin bo CRC CMC CUG Management Center (Series Q)

Trung tm qun l CUG CMDS Centralized Message Data System

H thng d bo s liu thng bo tp trung ha CMIP Common Management Information Protocol

Giao thc thng tin qun l chung CMIS Common Management Information Service

Dch v thng tin iu hnh chung CML Cellular Mobile Radio

V tuyn di ng t bo CMR Cell Misinsertion Rate (ATM)

T l t bo khng gn ni

CMR Common Mode Rejection

T chi phng thc chung CMRR Common Mode Rejection Ratio

H s t chi phng thc chung CMRS Cellular Mobile Radiotelephone Service

Dch v in thoi v tuyn di ng mng t bo

CN-CY

CNAE Customer Network Access Equipment

Thit b truy nhp mng khch hng CNET Centre National dEtudes des Tlcommunications

(National Study Centre for Telecommunications, France)

Trung tm nghin cu quc gia v vin thng ca Php CNM Customer Network Management

Qun l mng khch hng CNP Connection-Not-Possible Signal (Series Q)

Tn hiu khng th kt ni CNR Complex Node Representation (ATM)

Trnh by nt phc hp CNS Complementary Network Service

Dch v mng ph CNS Connection-Not-Successful Signal (Series Q)

Tn hiu kt ni khng thnh cng CO Centrel Office

Tng i trung tm COA Changeover Acknowledgement Signal (Series Q)

Tn hiu bo nhn i chiu CoC Certificate of Conformance

Chng ch tun th COD Connection Oriented Data (ATM)

D liu nh hng kt ni CODLS Connection-Mode Data Link Service (Series X)

Dch v lin kt d liu ch lin kt

COF Confusion Signal (Series Q)

Tn hiu nhm ln COLP Connected Line Identification sentation

Trnh by nhn dng ng dy kt ni COLR Connected Line Identification Restriction

Hn ch nhn dng ng dy kt ni COM Continuation Of Message

Phn t ko di ca bn tin COMSAT Communications Satellite Corporation

Cng ty v tinh thng tin CONF Conference Calling (Series I)

Gi kiu hi ngh CONS Connection-Mode Network Service (Series X)

Dch v mng ch lin kt COO Changeover Order Signal (Series Q)

Tn hiu lnh i chiu COP Code of Practice

M tha hnh COR Confirmation Of Receipt (Series X)

Chp nhn (khng nh) thu COSINE Coporation for Open Systems Interconnection Networking in

Europe

Hp tc v t chc mng lin kt cc h thng m chu u COST European Coperation in the field of Scientific

and Technical Research)

Hp tc chu u trong lnh vc nghin cu khoa hc v k thut COT Class Of Traffic (Series U, X)

Lp lu lng COT Continuity Signal (Series Q)

Tn hiu tip din COTC Class-Of-Traffic-Check (Series U)

Lp kim tra lu lng COV Changeover Signal (Series Q)

Tn hiu i chiu CP Call Progress (Series T, X)

Tin trnh cuc gi CP Processable Content Architecture Levels (Series T)

Cc lp cu trc ni dung c th x l CP PPDU Connect sentation PPDU (Series X)

PPDU trnh by kt ni CPA PPDU Connect sentation Accept PPDU (Series X)

PPDU ca khi chp nhn trnh din kt ni CPAF Customer mise Access Facility

Phng tin truy nhp nh ring thu bao CPC Call Processing Control (Series Q)

iu khin x l cuc gi CPCS Common Part Convergence Sublayer (ATN)

Lp con hi t ca phn chung CPCSSDU Common Part Convergence Sublayer - Service Data Unit (ATM)

Lp con hi t ca phn chung - Khi d liu dch v CPE Customer mise Equipment

Thit b thuc nh ring thu bao CPN Calling Party Number (ATM)

S gi ca pha ch gi CPR PPDU Connect sentation Reject PPDU (Series X)

PPDU t chi trnh by kt ni CPS1 Candidate Protocol Siute No.1 (Series G)

B giao thc ng c CPT Compatibility Tests (Series Q)

Cc php o th tnh tng thch CPU Central Processing Unit

Khi x l trung tm CR Carriage Return (Series T, X)

Quay li u dng CR Connection Request (Series X)

Yu cu kt ni CR TPDU Connection Request TPDU (Series X)

TPDU yu cu kt ni CRA Call Routing Apparatus

Thit b nh tuyn cuc gi

CRAFT Cooperative Research Action for Technology

Hot ng hp tc nghin cu v cng ngh CRAG Cellular Advisory Group

Nhm c vn v tuyn t bo CRC Cyclic Redundancy Check (Serie G, O, Q, V)

Kim tra d tha chu k CRED Credit Card Calling (Series I)

Gi bng th tn dng CRF Corrected Reference Equivalent (Series G, P)

Tng ng chun c hiu chnh CRF Cell Relay Function (ATM)

Chc nng chuyn tip CRF Connection Related Functions (Series I)

Cc chc nng lin quan n kt ni CRI Continuity-Recheck Incoming (Series Q)

Ti kim tra tnh lin tc gi n CRL Coded Run Lengths (Series T)

Cc khong chy c m ha CRN Checkpoint Reference Number (Series T)

S chun ca im kim tra CRO Continuity-Recheck Outgoing (Series Q)

Ti kim tra tnh lin tc gi ra CRP Call Request Packet (Series E)

Gi yu cu cuc gi CRP Command Repeat (Series T)

Lp li lnh CRS Cell Relay Service (ATM)

Dch v chuyn tip CRS Circuit Reset (Series Q)

Ti xc lp mch CRT Cathode Ray Tube

ng tia m lc CS Circuit Switch (Series I, X)

Chuyn mch knh

CS Clear Screen (Series T, X)

Mn sch, mn sng CS Convergence Sublayer (ATM)

Lp con hi t CSA Carrier Serving Area

Vng phc v ca nh khai thc CSA Command Session Abort (Series T)

Hy phin lnh CSC Circuit Supervision Control (Series Q)

iu khin gim st mch CSC Control Signalling Code (Series R, U, X)

M bo hiu iu khin CSCC Command Session Change Control (Series T)

iu khin thay i phin lnh CSDN Circuit Switched Data Networks (Series U)

Cc mng s liu chuyn mch knh CSE CAMEL Service Environment

Mi trng dch v CAMEL CSE Command Session End (Series T)

Kt thc phin lnh CSELT Centro Studi e Laboratori Telecommunicazioni or Centre

for Telecommunications Research and Testing (Italy)

Trung tm nghin cu v th nghim vin thng (Italia) CSI Called Subscriber Identification (Series T)

Nhn dng thu bao b gi CSI Control Sequence Introducer (Series T)

B nhp iu khin CSM Call Set-up Message (Series Q)

Tin bo thit lp cuc gi CSM Call Supervsion Message (Series Q)

Tin bo gim st cuc gi CSMA Carrier Sense Multiple Access (Series G)

a truy nhp phn bit cng ty CSMA-CD Carrier Sense Multiple Access with Collision Detection

a truy nhp phn bit cng ty c pht hin xung t

CSMA/CA Carrier Sense Multiple Access with Collision Avoidance (LAN)

a truy nhp phn bit cng ty c trnh xung t CSPDN Circuit Switched Public Data Network

Mng s liu cng cng chuyn mch knh CSRE Corrected Send Reference Equivalent (Series G, Q)

ng lng chun pha gi c hiu chun CSS Command Session Start (Series T)

Khi ng phin lnh CSS Connection-Successful Signal (Series Q)

Tn hiu kt ni thnh cng CSSN Circuit State Sequence Number (Series Q)

S chui trng thi mch CSTA Computer Supported Telephony Application

ng dng in thoi c s h tr ca my tnh CSU Channel Service Unit (ATM)

Khi dch v knh CSUI Command Session User Information (Series Q)

Thng tin ngi dng phin lnh CSV Circuit Switched Voice

in thoi chuyn mch knh CT Cordless Telephone

in thoi khng dy CT Call Transfer

Chuyn cuc gi CT Conformance Test (ATM)

Th nghim tnh ph hp CT (International) Transit Centre (Series M, Q)

Trung tm qu giang (quc t) CT-1 European Analogue Cordlles Telephone System

H thng in thoi khng dy analog ca chu u CT-2 Second generation cordless telephone, Digital

in thoi khng dy th h th 2, k thut s CTC Continue To Correct (Series T)

Tip tc hiu chnh

CTCR Complaint-To-Completion Ratio (Series E)

H s than phin/hon ho CTD Cell Transfer Delay

Tr chuyn ti CTD Cell Transfer Delay (ATM)

Tr chuyn ti CTD Commulative Transit Delay (Series X)

Tr qu tch ly CTE Channel Translation Equipment

Thit b dch knh CTI Computer Telephony Integration

Kt hp in thoi - my tnh CTIA Cellualar Telecommunications Industry Association

Hip hi cng nghip thng tin mng t bo CTN Corporate Telecommunications Network

Mng vin thng cng ty/ni b CTR Common Technical Regulation

Quy ch k thut chung CTR Response For Continue To Correct (Series T)

Tr li vic tip tc hiu chnh CTS Conformance Testing Services

Cc dch v th nghim tnh ph hp CUG Closed User Group

Nhm thu bao khp kn CUG/OA Closed User Group With Outgoing Access (Series X)

Nhm thu bao khp kn vi truy nhp cuc gi i CW Call Waiting

Ch gi CYTA Cyprus Telecommunications Agency

Hng vin thng Sp

D-DK

D/A Digital-to-Analogue

Digital - analog, bin i s/tng t chuyn i D/A

D/I Drop And Insert

R v xen (R/Xen) DA Destination Address (LAN)

a ch ch (LAN), a ch ni n DA Device Address (SNA)

a ch thit b (SNA) DA Demand Assignment (Series M, Q)

Gn cu DA Digital Access (Series M)

Truy nhp s DA Distribution Amplifier

B khuch i phn b DAA Data Access Arrangement

C ch truy nhp s liu DAB Digital Audio Broadcasting

Pht thanh qung s DAC Digital To Analog Converter (Series Q)

B bin i s - tng t DACS Digital Access Cross Connect Service

Dch v kt ni cho truy nhp s DAEDR Delimitation, Alighnment, Error Detection (Transmitting) (Series

Q)

Pht hin ranh gii, ng chnh v li (pht) DAI Digital Audi Interface (104 kbit/s)

Giao din m thanh s (104 kbit/s) DAL Direct Access Line

ng dy truy nhp trc tip DANAK Dansk Akkreditering or National Danish Accreditation Scheme

H thng cp chng ch quc gia ca an Mch DAP Directory Access Protocol (Series X)

Giao thc truy nhp th mc DAS Dual Attachment Station (FDDI)

Trm ghp i DASD Direct Access Storage Device

Thit b lu tr truy nhp trc tip

DASS Digital Access Signalling System

H thng bo hiu truy nhp s DATAM Document Architecture Transfer And Manupulation Class (Series

T)

Chuyn giao v iu khin cu trc vn bn DAU Data Adapter Unit

Khi thch ng s liu DB Document Bulk Transfer Class (Series T)

Chuyn giao khi vn bn DBM Document Bulk Transfer and Manipulation Class (Series T)

Lp chuyn giao v iu khin khi vn bn DC Direct Current

Dng mt chiu DC Disconnect Confirm (Series X)

Khng nh ngt kt ni DC TPDU Disconnect Confirm TPDU (Series X)

TPDU khng nh ngt kt ni DC1 Device Control One (Series T)

iu khin thit b No.1 DCC Data Communication Channel

Knh thng tin s liu DCC Data Country Code (Series F, X)

M quc gia ca s liu DCCH Dedicated Control Channel

Knh iu khin dnh ring DCE Data Circuit-Terminating Equipment

Thit b kt cui knh s liu DCE Data Communications Equipment

Thit b thng tin s liu DCE Distributed Computing Enviroment

Mi trng tnh ton phn tn DCF Data Count Field

Trng tnh ton s liu DCF Data Comunications Function Block (TMN)

Khi chc nng thng tin s liu

DCM Digital Circuit Multiplication (Series I)

Nhn mch s DCME Digital Circuit Multiplication Equipment (Series E, F, P, Q)

Thit b nhn mch s DCMG DCME Gain (Series G)

li ca DCME DCMS Digital Circuit Multiplication Systems (Series G)

Cc h thng nhn mch s DCN Data Comunications Network

Mng thng tin s liu DCN Disconnect (Series T)

Ngt kt ni DCP Digital Communications Protocol

Giao thc truyn thng s DCP Data Coordinating Point (Series M)

im phi hp d liu DCP SK Differentially Coherent Phase-Shift Keying

Kha dch pha nht qun vi sai DCS Digital Cellular System

H thng mng t bo s DCS Digital Communication System

H thng thng tin s DCS Digital Command Signal (Series T)

Tn hiu lnh digital DCS Digital Crossconnect System (Series M)

H thng kt ni cho digital DCT Discrete Cosine Transform

Bin i cosin ri rc DD Destination Reference (Series T)

Tham chiu im ch DDA Defined Display Area (Series T)

Vng hin th quy nh DDD Direct Distance Dialling

Quay s ng di trc tip

DDF Digital Distribution Frame

Khung phn b kiu s DDI Direct Dialling In

Quay s vo trc tip, vo thng DDM Digital Data Multiplexer

B ghp knh s liu digital DDN Defence Data Network

Mng s liu quc phng DDR Dial-on-Demand Routing

nh tuyn quay s theo yu cu DDR Demand Refresh Confirmation Information (Series H)

Thng tin khng nh i mi nhu cu DDS Digital Data Service

Dch v d liu digital DECT Digital European Cordless Telephone

in thoi khng dy digital ca chu u DEK Dansk Elektroteknisk Komit

(Electrotechnical Committee , Denmark)

y ban k thut in t an Mch DEL Delete (Series T)

Xa b, loi b DEMKO Danmarks Elektriske Materielkontrol

(Electrical Testing Laboratory, Denmark)

Phng th nghim o th in, an Mch DES Data Encryption Standard

Tiu chun kha m s liu DES Destination End Station (ATM)

Trm cui pha ch DES Digital Echo Suppressors (Series G)

Cc b trit vang k thut s DFC Data Flow Control

iu khin lung s liu DFS Distributed File System

H thng tp phn tn

DFT Distributed Function Terminal (SNA)

u cui chc nng phn tn DG Directorate General (CEC)

Tng Gim c (CEC) DGPS Differential Global Positioning System

H thng nh v ton cu kiu vi sai DGT Direccin General de Telecommunicaciones

(General Dirctorate of Telecommunications, Spain)

Tng cc vin thng, Ty Ban Nha DIB Directory Information Base (Series F, X)

Kho thng tin th mc DID Direct Inward Dialling

Quay s vo trc tip, quay s vo thng DIEL Advisory Committee on Telecommunications for

Disabled and Elderly People (UK)

y ban t vn v vin thng cho ngi gi v tn tt (Anh) DILEP Digital Line Engineering Program

Chng trnh thit k k thut ng dy s DILIC Dual Inline Intergrated Circuit

Vi mch mch t hp hai hng chn cm DIN Deutsches Institut fur Normung (German Standards Institute)

Vin tiu chun CHLB c DIP Dual Inline Package

V vi mch c hai hng chn cm DIS Draft International Standard

Tiu chun tm tt quc t DIS Digital Identification Signal (Series T)

Tn hiu nhn dng digital DISC Disconnect (Series G, Q, V, T, X)

Ngt kt ni DIT Directory Information Tree (Series X)

Cy thng tin th mc DIV Data-In-Voice (Series G)

S liu trong m thoi

DKE Deutsche Elektrotechnische Komission im DIN und VDE

(German Electrotechnical Commision in DIN and VDE)

also Deutsches Institut fur Normung

(German Institute for Standardisation)

Vin tiu chun ha CHLB c

DL-DX

DL Distribution List (Series F, X)

Danh mc phn b DLC Digital Loop Carrier

Nh khai thc mng thu bao s DLC Data-Link Control (Series G)

iu khin tuyn thng tin s liu DLC Dynamic Load Control (Series G)

iu khin ti nng ng DLC Sinalling-Data-Link-Connection-Order Signal (Series Q)

Tn hiu Lnh kt ni tuyn s liu bo hiu DLCI Data Link Connection Identifier (Series I, Q, V)

Phn t nhn dng kt ni tuyn s liu DLE Data Link Escape (Series T)

Hy b (thot) tuyn kt ni s liu DLL Data Link Layer (Series X)

Lp kt ni s liu DLL Digital Local Line (Series G)

ng dy ni ht s DLM Dynamic Linear Models (Series E)

Cc m hnh tuyn tnh ng DLM Signalling-Data-Link-Connection-Order Message (Series Q)

Tin bo Lnh kt ni tuyn s liu bo hiu DLPI Data Link Provider Interface (ATM)

Giao din nh cung ng kt ni s liu DLS Data Link Service (Series X)

Dch v kt ni s liu

DLSAP Data-Link-Service-Access Point (Series X)

im truy nhp dch v kt ni s liu DLSDU Data-Link-Service-Data-Unit (Series X)

Khi s liu dch v kt ni s liu DLT Down-Loading Termination Procedure (Series T)

Th tc kt ni cui ti xung DLU Digital Line Unit

Khi ng dy s DM Delta Modulation

iu ch delta DM Disconnected Mode (HDLC)

Ch ngt (HDLC) DM Degraded Minutes (Series M, Q)

Cc pht gim cp (cht lng) DM Document Manipulation Class (Series T)

Lp thao tc vn bn DMA Deferred Maintenance Alarm (Series M)

Cnh bo bo dng theo mun DMA Direct Memory Access

Truy nhp b nh trc tip DMB Dynamic Multipoint Bridging

Bc cu a im c ng DMC Desktop Multimedia Conferencing

Hi ngh a phng tin bng my tnh bn DMD Directory Management Domain (Series F, X)

Min qun l th mc DME Distributed Management Environment

Mi trng qun l phn tn DMOS Degradation Mean Opinion Store (Series P)

Lu tr gim nh gim cp trung bnh DMS Digital Multiplex Switch

Chuyn mch ghp knh digital DMUX Demultiplexer (Series G)

B gii iu ch

DN Delivery Status Notification (Series T)

Thng bo trng thi phn pht DN Directory Number (Series I)

S th mc DNA Digital Network Architecture

Cu trc mng s DNI Digital Non-Interpolated (Series Q)

Khng c ngoi suy theo k thut s DNIC Data Network Identification Code (X.121)

M nhn dng mng s liu (X121) DNIS Dialled Number Identification Service

Dch v nhn dng s gi va quay ti DNS Domain Name Service

Dch v t tn min DNU Digital Networking Unit

Thit b ni mng s DOD Direct Outward Dialing

Quay s gi ra trc tip DOMSAT Dosmetic Satellite

V tinh ni a DOS Disk Operating System

H iu hnh DOS (a) DOV Data-Over-Voice (Series G)

S liu qua m thoi DP Decadic Pulsing (Series Q)

To xung thp phn DP Dial Pulse (Series I)

Xung quay s DP Dot Pattern (Series T)

M hnh chm chm DPC Destination Point Code (Series M, Q, X)

M im ch DPCM Differential Pulse-Code Modulation

iu xung m vi sai

DPE Document Protocol Element (Series T)

Mi trng giao thc vn bn DPN Digital Path Not Provided Signal (Series Q)

Tn hiu ng truyn s khng c cung cp DPNSS Digital Private Network Signalling System

H thng bo hiu mng t nhn digital DPSK Differential Phase-Shift Keying

iu ch dch pha vi sai DQDB Distributed Queue Dual Bus

Bus kp xp hng kiu phn b DR Demand Refresh Request Information (Series H)

Thng tin yu cu i mi nhu cu DR Destination Reference (Series T)

Tham chiu im ch DR Direct Routed (Series E)

c nh tuyn trc tip DR Disconnect Request (Series Q)

Yu cu ngt kt ni DR TPDU Discinnect Request TPDU (Series X)

TPDU yu cu ngt kt ni DRAM Dynamic Random Access Memory

B nh truy nhp ngu nhin ng DRCS Dynamically Redefinable Character Set (Series F, T)

B k t c th xc nh li mt cch nng ng DRM Demand Refresh Mode (Series H)

Ch i mi nhu cu DRN Document Reference Number (Series T)

S ch dn vn bn DRPE Decimal Reference Publication Format (Series X)

nh dng n phm chun thp phn DRR Demand Refresh Request (Series H)

Yu cu i mi nhu cu DRS Digital Reference Sequence (Series G, Q)

Chui chun s

DS Danske Standardiseringsrad (Standards Institution, Denmark)

Vin tiu chun, an Mch DS Digital Signal

Tn hiu s DS Digital Section (Series G)

Phn on s DS Document Storage (Series T)

Lu tr vn bn DS-0 Digital Signal, Level 0

Tn hiu s mc 0 DS-1 Digital Signal, Level 1

Tn hiu s mc 1 DS-2 Digital Signal, Level 2

Tn hiu s mc 2 DS-3 Digital Signal, Level 3

Tn hiu s mc 3 DS3DLCP Physical Layer Convergence Protocol

Giao thc hi t lp vt l DSA Directory Service Agent

Hng dch v danh b DSA Distributed Systems Architecture

Cu trc cc h thng kiu phn b DSB Double Sideband (AM)

n bin kp, hai n bin DSE Data Switching Equipment

Thit b chuyn mch s liu DSE Data Switching Exchange (Series D, X)

Tng i chuyn mch d liu DSE Distributed Single Layer Embeded (testmethod) (Series X)

Gn lp n phn b (phng php o th) DSG Data Systems Group

Nhm h thng s liu DSI Detailed Spectrum Investigation (as conducted by CEPT/ERO)

Nghin cu tn ph chi tit (do CEPT/ERO tin hnh)

DSI Digital Speech Interpolation (Series E, G, I, Q)

Ni suy ting ni k thut s DSI Digit Sequence Integrity (Series I)

Tnh ton vn ca chui s DSK Downstream Keyer

B phm lung xung DSL Digital Subscriber Line

ng dy thu bao s DSMA Digital Sense Multiple Access

a truy nhp mc tiu digital DSP Digital Signal Processor

B x l tn hiu s DSP Directory System Protocol (Series X)

Giao thc ca h thng th mc DSP Domain Specific Part (Series I, X)

Phn c trng min DSRR Digital Short Range Radio

V tuyn digital c ly ngn DSS Digital Subscriber Signalling System (ISDN, B-ISDN)

H thng bo hiu digital ca thu bao DSS Digital Switched Service

Cc dch v chuyn mch s DSSC Double-Sideband Suppressed Carrier

Sng mang trit hai n bin DSSI Digital Subscriber Signalling System No.1 (Series Q)

H thng bo hiu thu bao s No.1 DST-REF Destination Reference (Series X)

Tham chiu im ch DSTE Data Subscriber Terminal Equipment

Thit b u cui ca thu bao s liu DSU Digital Service Units

Cc khi dch v s DSVD Digital Simultaneous Voice and Data

Ting ni v s liu digital ng thi kiu s

DSX Digital Signal Cross-Connect

Kt ni cho tn hiu s DT TPDU Data TPDU (Series X)

TPDU s liu DTAM Document Transfer And Manipulation (Series T)

Chuyn giao v thao tc vn bn DTC Digital Transmit Command (Series T)

Lnh truyn dn digital DTE Data Terminal Equipment

Thit b u cui s liu DTE Defense Technology Enterprise

Doanh nghip cng ngh quc phng DTI Department of Trade and Industry (UK)

B Thng mi v Cng nghip Anh Quc DTL Diode - Transistor Logic

Logic Dit - Tranzito DTLU Digital Terminal Line Unit

Khi u cui ng dy u cui digital DTMF Dual Tone Multi Frequency

a tn m kp DTP Data Transfer Part (Series I)

Phn chuyn giao d liu DTS Digital Transmission System

H thng truyn dn digital DTS Digital Test Sequence (Series P)

Chui o th digital DUA Directory User Agent

i l ngi s dng danh b DUP Data User Part (Series Q, X)

Phn ngi s dng s liu DVB Digital Video Broadcasting

Truyn hnh qung b s DVM Data over Voice Multiplexer

S liu trn b ghp knh thoi

DVT Digital Video Terminal

u cui video s DXE Either a DTE or a DCE (Series X)

Hoc mt DTE hoc mt DCE DXI Data Exchange Interface (ATM, SMDS)

Giao din tng i s liu

E-EL

E Essential (Series F, X)

Ct yu EA Evaluation Authority

Thm quyn nh gi, c quan thm nh EA Expedited Data Acknowledgement (Series X)

Bo nhn s liu pht nhanh EA Extended Address Field Bit (Series Q)

Bit ca trng a ch m rng EA TPDU

Expedited Acknowledge TPDU (Series X)

Bo nhn nhanh EAD Extended Addressing (Called) (Series T)

nh a ch m rng (b gi) EADAS Engineering and Administrative Data Acquisition System

H thng tip nhn d liu qun tr v thit k EAG Extended Addressing (Calling) (Series T)

nh a ch m rng ch gi EAROM Electrically Alterable Read-Only Memory

B nh c kh hiu in t EARS Electro-Aucoustic Rating System (Series P)

H thng phn loi m in EBCDIC Extended Binary Coded Decimal Interchange Code (Series D)

M trao i m rng ca s thp phn EBU European Broadcasting Union

Lin minh Pht thanh Truyn hnh chu u EC European Community

Cng ng Chu u

EC Echo Cancellers (Series G)

Cc b trit tp m EC Equivalent Capacity (Series E)

Dung lng tng ng ECA Emergency Changeover Acknowledgement

Bo nhn khn i ngc ECBF European Citizens Band Federation

Lin on bng tn nghip d Chu u ECC Error Correcting Code

M sa sai ECFRN European Consultative Forum for Researching Networking

Din n t vn ca chu u v nghin cu t chc mng ECG Elctro-cardiogram (Series V)

in tm ECH Echo Cancellation (Series G)

Hy vang, hy ting vng ECHO European Commission Host Organisation

C quan ch qun ca y ban chu u ECITC European Committee for IT Testing and Certification

y ban chu u v th nghim v cp chng ch cng ngh thng tin

ECL Emitter - Coupled Logic

Vi mch logic ghp cc gp ECM Emergency Changeover Order (Series Q)

Lnh i chiu khn ECMA European Computer Manufactures Association

Hip hi nhng nh sn xut my tnh chu u ECO Emergency Changeover Message (Series Q)

Thng bo i chiu khn ECS European Communication Satellite

V tinh truyn thng chu u ECSA Exchange Carriers Standards Asociation

Hip hi tiu chun ha cc nh khai thc in thoi ECT Echo Cancellation Technique (Series V)

K thut trit ting vng

ECTEL The Association of the European Telecommunications

and Professional Electronics Industry

Hip hi cng nghip in t chuyn nghip v vin thng chu u

ECTRA European Committee for Telecommunications Regulatory Affairs

y ban chu u v iu hnh vin thng ECTS Electronic Custom Telephone System

H thng in thoi mua hng bng in t ECTS Echo Canceller Testing System (Series M, O)

H thng o th ca b gim ting vng ECTTC European Committee for Telecommunication Testing

Certification

y ban chu u v o kim v cp chng ch cho vin thng ECTUA European Council of Telecommunications Users Association

Hi ng cc hip hi khch hng vin thng chu u ED Expedited Data (Series X)

S liu pht nhanh ED TPDU Expedited Data TPDU (Series X)

D liu chuyn pht nhanh ED-TPDU-NR ED-TPDU Number (Series X)

S TPDU-ED EDAC Error Detection and Correction

Pht hin v sa sai EDAPS Electronic Data Processing

X l s liu in t EDB End Of Block

Cui khi EDC Error Detecting Code

M pht hin sai li EDCE Error Detection and Correction Equiment

Thit b pht hin v sa sai EDFA Erbium Doped Fiber Amplifier

B khuch i quang c kch thch bng Eri EDGE Electronic Data-Gathering Equiment

Thit b thu gom d liu bng in t

EDH Electronic Document Handling

X l vn bn bng in t EDI Electronic Data Interchange

Trao i s liu in t EDIFACT Electronic Data Interchange

For Administration, Commerce, and Trade (ANSI)

Trao i d liu in t v hnh chnh, thng mi v mu dch EDN Expedited Data Negotiation (Series X)

m phn d liu chuyn nhanh EDP Electronic Data Processing

X l d liu in t EDTV Extended Definition Television

Truyn hnh phn gii m rng EEC European Economic Community

Cng ng kinh t chu u EED Emergency Escape Device

Thit b khc phc s c khn cp EEE Electrical, Electronic Electromechanique (partlist)

(Danh mc cc cm) in, in t v c in EEMA European Electronic Mail Association

Hip hi bu chnh in t chu u EESS Earth Exploration - Satellite Service

Dch v v tinh thm him tri t EETDN End-To-End Transit Delay Notification (Series T, X)

Thng lng thi gian tr qu t u cui ti u cui EF Elementary Function (Series I)

Chc nng c bn EFdS Error-Free Deciscond (Series X)

xi giy khng li EFM Eight To Fourteen Modulation

iu ch 8/14 EFS End of Frame Sequence (LAN)

Cui chui xung (LAN), kt thc dy khung EFS Error-Free Seconds (Series Q, X)

S giy khng li

EFTA European Free Trade Association

Hip hi mu dch t do chu u EFTPOS Electronic Funds Transfer Point Sale

im chuyn qu bn hng bng in t EGC Enhanced Group Call (Series F)

Cuc gi nhm nng cao EGSM Extended Global System for Mobile Communications

H thng thng tin di ng ton cu m rng EH Exterbal Host (Series T)

Trm ch bn ngoi EHF Extremely High Frequency

Tn s cc cao EI Expansion Interface

Giao din m rng EI Exchange Identification (Series V)

Nhn dng tng i EIA Electronics Industry Association

Hip hi cng nghip in t EID End Point Identifier (Series I)

B nhn dng im cui EIR Equipment Identity Register

B ghi nhn dng thit b EIRP Effective Isotropic Radiated Power

Cng sut bc x ng hng hiu dng EISA Extended Industry Standard Achitecture

Cu trc tiu chun cng nghip m rng EIT Encoded Information Type (Series F, X)

Loi thng tin m ha EIUF European ISDN User Forum

Din n ngi dng ISDN chu u ELAN Emulated Scan Line Description (Series T)

M t ng qut m rng ELOT Hellenic Organisation for Standardisation (Greece)

C quan tiu chun ha Hellenic (Hy Lp)

ELR Expected Maximum Transit Delay Local-To-Remote (Series X)

Thi gian tr qu cc i d kin t ni ht ti trm xa ELT Emergency-Load-Transfer Signal (Series X)

Tn hiu chuyn ti khn cp

EM-EW

EM End Mark (Series T)

Du kt thc EM End Of Medium (Series T)

Kt thc mi trng (cha) EMA Enterprise Management Architecture

Cu trc qun l doanh nghip EMAG ETSI MIS Advisory Group

Nhm c vn ETSI MIS EMC Electromagnetic Compatibility

Tng thch in t EMI Electromagnetic Interference

Can nhiu in t EML Element Management Layer (ATM)

Lp qun l thnh phn EMP Electromagnetic Pulse

Xung in t EMS Extended Memory Specification

Yu cu k thut nh m rng EMS Element Management System (ATM)

H thng qun l thnh phn EMT Elapsed Maintenance Time

Thi gian kt thc bo dng EMTBG Estimated Mean Time Between Failure

Thi gian trung bnh c lng gia hai ln s c EN Norme Europenne (European Standard)

Tiu chun chu u ENG/OB Electronic News Gathering/Outside Broadcast

Thu thp tin tc in t/pht qung b ra

ENQ Enquiry (Serie T)

Hi ENS Enterprise Network Services

Cc dch v mng doanh nghip ENSDU Expedited Network-Service-Data-Unit (Series X)

Khi d liu dch v mng chuyn nhanh ENSO ETSI National Standardisation Organisations (ETSI)

Cc t chc tiu chun ha quc gia ca ETSI ENV European pre-standard

Tin tiu chun chu u EOA End Of Address (Series F)

Kt thc a ch EOB End Of Block Marker (Series H)

Kt thc nh du EOC Embeded Operations Channel (Series G)

Knh khai thc EOC End-Of-Cluster (Series H)

Kt thc nhm EOC End Of Contents

Ht ni dung EOCS End Office Connections Study (Series G)

Nghin cu cc kt ni tng i u cui EOFB End-Of-Fascimile Block (Series T)

Kt thc khi Fax EOP End-Of-Procedures (Series T)

Kt thc th tc EOR End Of Retransmission

Kt thc pht li EOS End-Of-Selection (Series U, X)

Kt thc chn EOSR End Of Status Request Signal (Series U)

Kt thc tn hiu yu cu trng thi EOT End Of Transaction (Series U)

Kt thc giao dch

EOT End Of Transmission (Series T)

Kt thc truyn dn EOT End Of TSDU Mark (Series X)

Kt thc du ISDU EOTC European Organisation for Testing and Certification

T chc o kim v cp chng ch chu u EP Executive Process (Series I)

Qu trnh tha hnh EPHOS European Procurement Handbook for Open Systems

(A European initiative to provide member

States governmental offices with detailed

public procurement specifications for open systems)

Sch hng dn tm kim cc h thng m ca chu u (Mt sng kin ca chu u nhm cung cp cc yu cu k thut v cc h thng m cho cc c quan chnh ph) cc nc thnh vin.

EPIRB Emergency Position Indicating Radio Beacons

Cc i cnh bo v tuyn ch th v tr khn cp EPR Earth Potential Rise (Series K)

Nng cao th nng t EPROM Electrically Erasable Programable Read-Only Memory

PRM c th xa bng in ER Essential Requirement(s)

Cc yu cu thit yu ER Error (Series X)

Li, sai ER Explicit Rate (ATM)

Tc tng minh ERC European Radiocommunications Committee

y ban thng tin v tuyn chu u ERL Expected Maximum Transit Delay Remote-To-Local (Series X)

Thi gian tr ti a d kin - u xa ti ni ht ERMES European Radio Messaging System

H thng gi tin v tuyn Chu u ERO European Radiocommunications Office

Vn phng thng tin v tuyn Chu u

ERP Ear Referece Point (Series P) ERP Effective Radiated Power

Cng sut pht x hiu dng ERP Response For End Of Retransmission (Series T)

Tr li cho vic kt thc pht li ERT Equivalent Random Traffic (Series E)

Lu lng ngu nhin tng ng ES European Standard

Tiu chun Chu u ES Echo Suppressor (Series G)

Cc b trit ting vng ES End Station (ATM)

Trm u cui ES Errored Seconds (Series M)

Cc giy b li ESA European Space Agency

Hng v tr chu u ESB European Standardisation Board

Ban Lnh o tiu chun ha Chu u ESC European Standardisation Council

Hi ng tiu chun ha chu u ESC Escape (Series I)

Thot, xa ESD European Satandards Database

C s d liu cc tiu chun Chu u ESDI Enhanced Small Device Interface

Giao din dng cho thit b nh tnh nng cao ESF Extended Superframe Format (Series O)

Khun dng siu khung m rng ESI End System Identifier (ATM, ISO)

B nhn dng h thng cui (ATM, ISO) ESI Equivalent Step-Index

Ch s bc tng ng ESIG European SMDS Interest Group

Nhm cng quyn li SMDS Chu u

ESMR Enhanced Specialised Mobile Radio

V tuyn di ng chuyn dng nng cao ESN Equipment Serial Number

S x-ri thit b ESO European Standardisation Organisation

T chc tiu chun ha Chu u ESP Enhanced Service Provider

Nh cung cp dch v nng cao ESPRIT European Strategic Progamm for Research In Information

Technology

Chng trnh chin lc Chu u v nghin cu v pht trin ESS Electronic Switching System

H thng chuyn mch in t ESS European Standardisation System

H thng tiu chun ha chu u ESTS Echo Suppressor Testing System (Series O)

H thng th nghim b trit ting vng ESU Exchange Signalling Unit (Series Q)

Khi bo hiu ca tng i ET Exchange Terminal (Series G)

u cui tng i ET Exchange Termination (Series I, Q)

Kt cui ca tng i ETACS Extended Total Access System

H thng truy nhp hon ton m rng ETB End Of Transmission Block (Series T)

Kt thc khi pht ETCI Electro-Technical Council of Ireland

y ban k thut in t Ireland ETM Eight To Ten Modulation

iu ch 8/10 ETNO Association of European Public Telecomunications Network

Operators

Hip hi cc nh khai thc mng vin thng cng cng chu u ETO European Telecommunications Office

Vn phng vin thng chu u

ETR ETSI Technical Report

Bo co k thut ca ETSI ETR Easy To Reach (Series E, Q)

D t c ETS European Telecommunications Standard

Tiu chun vin thng chu u ETSA European Telecommunications Services Association

Hip hi cc dch v vin thng Chu u ETSI European Telecommunications Standarda Institute

Vin tiu chun vin thng Chu u ETX End Of Text (Series T)

Kt thc vn bn EU European Union

Lin minh Chu u EUM Extended-Unsuccessful-Backward Set-up Information Message

Indication (Series Q)

Ch th tin bo m rng ca thng tin c thit lp thnh cng theo hng ngc

EUREKA European Research Co-operation Agency

C quan hp tc nghin cu chu u EURESCO European Institute for Research

and Strategic Studies in Telecommunications

Vin chu u v nghin cu khoa hc v chin lc trong vin thng

EUROBIT European Association of Manufactures of Business

Machines and Data Processing Equipment

Hip hi chu u ca nhng nh sn xut thit b vn phng

v x l s liu EUSIDIC European Association of Information Services

Hip hi chu u v cc dch v tin hc EUT Equipment Under Test (Series O)

Thit b ang trong qu trnh o th EUTELSAT European Telecommunications Satellite Organisation

T chc v tinh vin thng Chu u EWOS European Workshop for Open Systems

Hi tho chu u v cc h thng m Chu u EWP ETSI Work Programme

Chng trnh lm vic ca ETSI

F

F Final Bit (Series T)

Bt kt thc F Flag (Series Q)

C hiu F-Link Fully Associated Link

Truyn kt ni hon ton kt hp FACTS Fully Automated Collect and Third-Number Service

Dch v s gi th ba phi tnh cc hon ton t ng FAM Forward-Address Message (Series Q)

Tin bo a ch hng thun FAS Frame Alignment Sequence (T-1, E.1)

Chui ng chnh khung FAS Frame Alignment Signal (Series G, H, I, O)

Tn hiu ng chnh khung FAW Frame Alignment Word (Series H)

T ng chnh khung FC Fault Condition (Series I)

Trng thi h hng FC Functional Components (Series I)

Cc cu kin chc nng FC Feedback Control

iu khin hi tip FCC Federal Communications Commission

y ban truyn thng lin bang FCC Forward Control Channel

Knh iu khin hng i FCD Facsimile Coded Data (Series T)

S liu m ha Fax FCF Facsimle Control Field (Series T)

Trng iu khin fax FCM Signalling Traffic Flow Control Message (Series Q)

Tin bo iu khin lung lu lng FCS Federation of Communications Services (UK)

Lin on cc dch v thng tin (Anh ) FCS Frame Check Sequence (Series Q, T, V, X)

Chui kim tra khung FD Frequency Distance

C ly theo tn s FD Frequency Diversity

Phn tp theo tn s FDD Frequency Division Duplex

Song cng chia tn s FDDI Fibre Distributed Data Interface

Giao din s liu phn b theo cp quang FDM Frequency Division Multiplex(ed)

Ghp knh chia tn s FDMA Frequency Division Multiple Access

a truy nhp chia tn s FDMH Fixed Daily Measurement Hour (Series E)

Gi o hng ngy c nh FDMP Fixed Daily Mesurement Period (Series E)

Chu k o hng ngy c nh FDOS Floppy Disk Operating System

H thng iu hnh bng a mm FDT Formal Description Technique (Series X, Z)

K thut m t hnh thc FE Functional Element (Series G)

Mi trng chc nng FE Functional Entity (Series Q)

Thc th chc nng FEA Functiona Entity Action (Series I, Q)

Hnh vi ca thc th chc nng FEBE Far-End-Block-Error (Series G)

Li khi u xa

FEC Forward Error Correction

Sa sai hng i FEE Far-End Error (Series M)

Li (sai) u xa FEI Federation of the Electronics Industry (UK)

Lin on cng nghip in t (Anh) FERF Far End Receive Failure (Series G)

Mt thu u xa FEXT Far-End Crosstalk (Series G, Q)

Xuyn m u xa FF Form Feed (Series T, X)

y giy FFR Freeze Frame Request (Series H)

Yu cu khung ng lnh FFT Fast Fourier Transform (Series P)

Bin i furie nhanh FG Functional Group (ATM)

Nhm chc nng FH Failure Indication Information (Series G)

Thng tin a ch h hng FI Format Identifier (Series V)

Phn t nhn dng khun FIB Forward Indicator Bit (Series Q)

Bt ca b ch th hng thun FIF Facsimile Information Field (Series T)

Trng tin ca Fax FIFO First In, First Out (Series E, P, X)

Vo trc, ra trc FISU Fill-in Signal Unit (Series Q)

Khi tn hiu in vo FITE Forward Interworking Telephone Event (Series Q)

Bin c my in thoi cng hot ng hng thun FITL Fiber In The Loop

Cp quang trong mch thu bao

FM Frequency Modulation

iu tn FM Function Management

Qun l chc nng FM1 Frame Mode 1 (Series H)

Ch khung No.1 FMEA Fault Modes and Effect Analysis (Series E)

Phn tch cc ch , cc tc ng v tnh nghim trng ca s c FMH Function Management Header (SNA)

Tiu (mo u) qun l chc nng FMVFT Frequency Modulated Voice Frequency Telegraph (Series R)

in bo tn s in thoi iu tun FNPA Foreign Numbering Plan Area

Vng k hoch nh s ngoi giao FO Fiber Optics

Cp si quang FOC Factor Of Coorporation

H s phi hp hot ng FOI End Of Input (Series F, T, U)

Kt thc u vo FOL End-Of-Line (Series T)

Kt thc ng dy FOM End-Of-Message (Series F, T, U)

Kt thc tin bo FOMS/FUSA Frame Operations Management System/Frame User Switch

Access System

H thng qun l cc hot ng khung/H thng truy nhp chuyn mch thu bao theo khung

FOT Forward Transfer Signal (Series Q)

Tn hiu chuyn theo hng thun FPF Facility Parameter Field (Series X)

Trng tham s tin ch FPLF Field Programable Logic Family

H vi mch logic c th lp trnh khi s dng FPLMTS Future Public Land Mobile Telecommunication System

H thng thng tin di ng mt t cng cng trong tng lai

FR Frame Relay

Chuyn tip khung FR Frame Reject (Series V)

Bc b khung FRAD Frame Relay Access Device

Thit b truy nhp chuyn tip khung FRBS Frame Relay Bearer Service

Dch v mang ca chuyn tip khung FRC Fault Reporting Centre (Series N)

Trung tm thng bo s c FRMR Frame Reject (Series G, Q, X)

Bc b khung FRP Field Repetition (Series H)

Lp li trng FRS Frame Relay Service

Dch v chuyn tip khung FRS Frame Relay Switch

Chuyn mch ca chuyn tip khung FRS Fundamental Reference System (Series P)

H thng tham chiu c bn FS Figure-Shift (Series S)

Dch hnh FS Further Study (Series X)

Nghin cu tip FSG The ETSI PSTN Full Steering Group

Nhm ch o ton b cng vic PSTN ca ETSI FSK Frequency Shift Keying

Kha dch tn, iu ch dch tn FSL Flexible Service Logic

Logic dch v linh hot FSM Forward Set-up Message (Series Q)

Tin bo thit lp hng thun FSN Forward Sequence Number (Series Q)

S chui theo hng thun

FSS Fixed-Satellite Service

Dch v v tinh c nh FST Field Start (Series H)

Khi ng trng FTA Fault Tree Analysis (Series E)

Phn tch cy s c FTAM File Transfer Access & Management

Truy nhp v qun l chuyn tp FTB Fade-To-Black

Chuyn dn sang en FTP File Transfer Protocol

Giao thc chuyn tp FTTC Fiber to the Curb

Cp quang ti va h FTTH Fiber to the Home

Cp quang ti nh FTW Forward Travelling Wave

n sng chy FUNI Frame User-to-Network Interface (ATM)

Giao din khch hng-mng ca khung (ATM) FUR Fast Update Request (Series H)

Yu cu cp nht nhanh FWS Fixed Wireless Station

Trm v tuyn c nh FX Foreign Exchange

Tng i quc t FX Fixed Station

Trm c nh FXS Foreign Exchange Station

Tng i quc t FZA Fernmeldetechnisches Zentralamt (Test laboratory, Austria)

Phng o th (o)

G

G.Fr Gold francs (Series D)

ng France vng G/T Gain-over-noise Temprature

Tng ch trn nhit tp m G3 Group 3

Nhm 3 (ca ITU) G3Fax Group 3 Facsime Type (Series X)

Fax nhm 3 GA General Assembly (ETSI)

Hi ngh ton th (ETSI) GADS Generic Advisory Diagnostic System

H thng d ton t vn chung GAP Groupe d Analyse(s) et Prognose(s)

Nhm phn tch v d bo GAP Generic Access Profiles

Cc m t truy nhp mc ch chung GATT Global Agreement on Tarrifs and Trade

Hip nh ton cu v thu quan v thng mi GBR Green, Blue, Red

Xanh, lc, GBSC Group of Blocks Start Code (Series H)

Nhm m khi ng khi GC Global Control (Series I)

iu khin ton cc GCAC Generic Connection Admission Control

iu khin nhp kt ni chung GCC Generic Conference Control

iu khin hi ngh tng thch chung GCC Graphic Character Composition (Series T)

Cu trc k t ha GCRA Generic Cell Rate Algorithm

Thut ton chung nh gi GDCI General Data Communications Interface (Series V)

Giao din truyn thng s liu chung

GDP Gross Domestic Product

Tng sn phm trong nc GES Ground Earth Station (Series Q)

Trm mt t trn t lin GF Global Functions (Series I)

Cc chc nng ton din GFC Generic Flow Control (ATM)

iu khin lung tng thch chung GFI General Format Identifier (X.25)

Phn t nhn dng khun dng chung GGCA Geometric Graphics Content Architecture (Series T)

Kin trc hnh hc GGMV Group of blocks Global Motion Vector (Series H)

Nhm cc khi vc t di ng ton cu GI Group Identification (Series T)

Nhn dng nhm GI Group Identifier (Series T, V)

Phn t nhn dng nhm GIO Generic Interface for Operations (SMDS)

Giao din tng thch chung cho khai thc (SMDS) GL Group Length (Series v)

di nhm GMDSS Global Maritime Distress and Safety System

H thng cu nn v an ton hng hi ton cu GMSC Gateway Mobile Services Switching Centre

Tng i cng cc dch v di ng GMT Greenwich Mean Time (Series E, D, F)

Gi quc t, gi GMT GN Group Number (Series H)

S hiu nhm GND Ground

t, mt GoS Grade of Service

Cp phc v

GOSIP Government Open Systems Interconnection Profile

M t kt ni cc h thng m ca chnh ph GPI General Purpose Interface

Giao din mc ch chung GPS Global Positioning System

H thng nh v ton cu GR Graphic Representation (Series Z)

Trnh by ha GRA Circuit Group Reset-acknowledgement Message (Series Q)

Tin bo gim st nhm mch GRM Circuit Group Supervision Message (Series Q)

Tin bo ti xc lp nhm mch GRQ General Request Message (Series Q)

Tin bo yu cu chung GRS Circuit Group Reset Message (Series Q)

Tin bo ti xc lp nhm mch GSA GSM System Area

Vng ca h thng GSM GSM Special Mobile Group; and: The Pan-European Cellualar Digita

System

Nhm c bit v di ng v H thng mng t bo s ton chu u

GSM Global System for Mobile Communications

H thng thng tin di ng ton cu GSM General forward Setup Information Message (Series Q)

Thng bo tin tc v xc lp hng thun chung GSM MS GSM Mobile Station

Trm di ng GSM GSM PLMN GSM Public Land Mobile Network

Mng di ng mt t cng cng GSM GSO Geostationary Orbit

Qu o a tnh GSS Group Switching Subsystem

H thng con chuyn mch nhm GSTN General Switched Telephone Network (Series G, V)

Mng in thoi chuyn mch chung

GT Given Token (Series T)

Trao th bi GT Global Title (Series Q)

Tiu ton cu GUI Graphic User Interface

Giao din ngi dng ha

H

H Horizontal

ng chn tri, nm ngang H -O chan HO Channel

Knh 384 Kbit/s (6 knh DSO ca mt mch T1) H-channels Cc knh H (thuc PR1) H10-chan H10-channel

Knh 1472 Kbit/s ca Bc M H11-chan H11-channel

Knh 1536 Kbit/s ca Bc M H12 H12

Knh tc s cp 1920 Kbit/s ca chu u HAR CENELEC Agreement for electrical cords and cables

Hip nh v dy v cp in ca CENELEC HBA Hardware Failure Oriented Group Blocking-

acknowledgement Message (Series Q)

Tin bo nhn chn nhm nh hng h hng phn cng HBFG Host Behavior Functional Group

Nhm chc nng ng x ca my ch HBUR Hardware Failure Oriented Circuit Group Blocking and

Unblocking Receipt (Series Q)

Chn thu v khng chn thu nhm mch c nh hng h hng phn cng

HBUS Hardware Failure Oriented Circuit Group Blocking and Unblocking Sending (Series Q)

Chn v khng chn gi nhm mch c nh hng h hng phn cng

HCM High Capacity Multiplexing

Ghp knh dung lng cao

HCSPR Hundred Call Seconds Per Hour

S giy mt trm cuc gi trong mt gi HCV High Capacity Voice

Thoi dung lng cao HDB2 High Density Bipolar of order 2 (Series G)

Lng cc mt cao bc 2 HDB3 High Density Bipolar of order 3 (Series O)

Lng cc mt cao bc 3 HDLC High-Level Data Link Control

iu khin tuyn kt ni s liu mc cao HDMS High-Density Memory System

H thng nh mt cao HDRC Hypothetical Digital Reference Connection (Series E, I)

Kt ni s gi nh chun HDSL High-data-rate Digital Subscriber Line

ng dy thu bao s tc s liu cao HDT Host Digital Terminal

u cui my ch k thut s HDTM Half-Duplex Transmission Module (X.25)

Modem truyn dn bn song cng HDTM Half-Duplex Transmission Module (Series T)

Modun truyn dn bn song cng HDTV High Definition Television

Tivi phn gii cao HEC Harder Error Control (ATM)

Sa sai tiu HES Home Electronics System(s)

(Cc) h thng in t gia dng HF High Frequency

Tn s cao, cao tn

HFC Hybrid Fiber/Coax

Cp quang/ ng trc hn hp HFT Hands-Free Telephone (Series P)

My in thoi b ti

HGR Hardware Failure Oriented Group Blocking Message (Series Q)

Thng bo chn nhm v h hng phn cng HGU Hardware Failure Oriented Group Unbloking Message

(Series Q)

Thng bo khng chn nhm v h hng phn cng HIPERLAN High Performance local area network

Mng LAN cht lng cao HIPPI High Performance Parallel Interface

Giao din song song hiu nng cao HLC High Level Committee of ITU

Hi ng cp cao ca ITU HLC High Layer Compatility (Series E, I, Q, T)

Tng thch lp cao HLF High Layer Function (Series I)

Chc nng lp cao HLL High Level Language

Ngn ng bc cao HLL Half-Loop Loss (Series G)

Suy hao na vng HLR Home Location Register

B ng k v tr thng tr HMA High Memory Area

Vng nh cao cp HMCG Signalling Link Congestion (Series Q)

Tc nghn tuyn bo hiu HMDC Message Descrimination (Series Q)

Phn gii tin bo HMDT Message Distribution (Series Q)

Phn b tin bo HMRT Message Routing (Series Q)

nh tuyn tin bo HMSO Her Majestys Stationery Office (UK)

Tng i c nh ca n hong (Anh) HNPA Home Numbering Plan Area

Vng k hoch nh s trong nc

HOSTID Host Identifier

Phn t nhn dng my ch HP High Pass (Series G)

(B lc) thng cao HPB Character Postion Backward (Series T)

nh v k t hng ngc HPLMN Home Public Land Mobile Network (Series D, Q)

Mng di ng mt t cng cng trong nc, thng tr HPR High Performance Routing

nh tuyn hiu nng cao HPR Character Postion Relative (Series I)

nh v k t quan h HR Hypothetical Reference (Series G)

Gi nh chun HRC Hypothetical Reference Circuit (Series G, H, P)

Mch gi nh chun HRDL Hypothetical Reference Digital Link (Series G)

Tuyn s gi nh chun HRDP Hypothetical Reference Digital Path (Series G)

ng truyn s gi nh chun HRDS Hypothetical Reference Digital Section (Series G, M)

on s gi nh chun HRPF Hexadecimal Reference Publication Format (Series X)

nh dng n phm gi nh chun HRX Hypothetical Reference Connection (Series E, G, I, M)

Kt ni gi nh chun HSD High Speed Data (Series E)

S liu tc cao HSD Honestly Significant Difference (Series P)

S chnh lch tht ng k HSLAN High Speed LAN

Mng LAN tc cao HSPSD High-Speed Packet Switched Data

S liu chuyn mch gi tc cao

HSRC Hypothetical Signalling Reference Connection (Series Q)

Kt ni bo hiu gi nh chun HSSI High-Speed Serial Interface (ANSI)

Giao din ni tip tc cao (ANSI) HT Horizontal Tabulation (Series T, X)

Lp biu ngang HTML Hypertext Markup Language

Ngn ng nh du siu vn bn HTR Hard-To-Reach (Series E, F, Q)

Kh t ti, kh vn ti HTTP Hypertext Transfer Protocol (IETF)

Giao thc chuyn ti siu vn bn HUA Hardware Failure Oriented Group Unblocking

Acknowledgement Message (Series Q)

Tin bo nhn khng chn nhm b hng phn cng HVAC Heating, Ventilation, and Air Conditioning

Si m, qut gi v iu ha

I-IM

I Infrared

Ngoi , hng ngoi I Information (Series G, Q, V, X)

Thng tin I-ETS Interim European Telecommunications Standard

Tiu chun vin thng chu u tm thi I/C Incoming (Series I)

Gi n I/O Input/Output

Vo/ra I/O Input/Output (Series F, X)

Vo/ra IA Incoming Access (Series X)

Truy nhp gi n IA International Alphabet (Series X)

Bng ch ci quc t IA5 International Alphabet No.5 (Series Q, R, T, V)

Bng ch ci quc t s 5 IAC Initial Alignment Control (Series Q)

iu khin sp xp ban u IACC Inter-aural Cross Correlation

Tng quan cho gia thnh gic IACK Service Acknowledgement Signal (Series U)

Tn hiu bo nhn dch v IACS Integrated Access and Crossconnect System

H thng tng hp truy nhp v ni cho IAEA International Atomic Energy Agency (Series K)

C quan nng lng nguyn t quc t IAFIS Integrated Automated Fingerprint Identification System

H thng nhn dng du vn tay t ng tng hp IAI Initial Address Message With Additional Information (Series Q)

Tin bo a ch ban u vi thng tin ph IAM Initial Address Message (Series E, I, Q)

Tin bo a ch u IANA Internet Address Naming Authority

Thm quyn t tn a ch Internet IARU International Amateur Radio Union

Lin on v tuyn nghip d quc t IASG Internetwork Address Sub-group

Phn nhm a ch lin mng IBC Integrated Broadband Communication

Thng tin bng rng tng hp IBN Institut Belge de Normalisation (Standards Institute, Belgium)

Vin tiu chun ca B IBS International Bussiness Service (An INTELSAT acronym)

Dch v quc t cho cc doanh nghip (t vit tt ca INTELSAT)

IC Integrated Circuit

Vi mch, mch tch hp IC Interlock Code (Series E, X)

M kha lin ng

IC Interexchange Carrier

Hng lin tng I, cng ty in thoi ng di ICB Incoming Calls Barred (Series X)

Cc cuc gi n b chn ICC Incoming Trunk Circuit (Series Q)

Mch trung k gi n ICCB Internet Control and Configuration Board

Ban cu hnh v iu khin Internet ICCM Interworking By Call Control Mapping (Series X)

Cng lm vic nh nh x iu khin cuc gi ICD International Code Designator (ISO)

C quan son tho v m quc t ICI Intercarrier Interface (SMDS)

Giao din gia cc nh khai thc, gia cc h truyn dn (SMDS) ICMP Internet Control Message Protocol

Giao thc tin bo iu khin Internet ICN International CUG Number (Series Q)

S CUG quc t ICP Instituto das Communicaces des Portugal

(The Portuguese Institute of Communications)

Vin thng tin B o Nha ICP Internet Control Protocol

Giao thc iu khin Internet ICR Initial Cell Rate

H s t bo ban u ICS Identification of Character Set (Series T)

Nhn dng b k t ICT Information and Communication Technologies

Cc cng ngh tin hc v truyn thng ID Identification

Nhn dng ID Identity (Series Q, T)

Nhn dng, nt nhn dng IDA Integrated Data Access or Intergrated Digital Access

Truy nhp s liu tng hp hoc Truy nhp digital tng hp IDD International Direct Dialling (Series E)

Quay s quc t trc tip IDI Initial Domain Identifier (ISO)

Phn t nhn dng min ban u (ISO) IDI Initial Domain Identifier (Series I, X)

Phn t nhn dng min ban u IDLC Integrated Digital Loop Carrier (Telephony)

H thng chuyn ti mch thu bao s tng hp (in thoi) IDN Intergrated Digital Network

Mng s lin kt IDNX Integrated Digital Network Exchange

Tng i ca mng s lin kt IDP Internet Datagram Protocol

Giao thc gi s liu Internet IDP Initial Domain Part (Series I, X)

Phn min ban u IDS Interworking Data Syntax (Series T)

C php s liu lm vic IDSE International Data Switching Exchange (Series I, X)

Tng i chuyn s liu quc t IDTV Improved Difinition Television

Truyn hnh phn gii cao ci tin IDU Interface Data Unit

Khi s liu phi ghp IE Information Element (Series Q, T) IEC International Electrotechnical Commission

y ban k thut in t quc t IEE Institution of Electrical Engineers (UK)

Hc vin k s in (Anh) IEEE Institute of Electrical and Electronic Engineers

Hc vin k s in v in t IENGF Instituto Elettrotecnico Nazionale Galileo Feraris (Italy)

Vin k thut in quc gia Galileo Feraris (Italia) IES Information Exchange Services

Cc dch v trao i thng tin

IESG Internet Engineering Steering Group

Nhm iu hnh k thut Internet IETF Internet Engineering Task Force

Lc lng c trch k thut Internet IEV International Electrotechnical Vocabulary (Series P, S)

T in k thut quc t IFRB International Frequency Registration Board

y ban ng k tn s quc t IFS International Freephone Service (Series D)

Dch v in thoi quc t IFW Inverted Frame Word (Series G)

T khung b hon v IGS Identify Graphic Subrepertoire (Series T, X)

Nhn dng siu danh mc ha IGT Ispettorato Generale Delle Telecomunicazioni

(General Inspectorate of Telecommunications, Italy)

Tng thanh tra vin thng Italia IIR Infinite Impulse Response

p ng xung bt nh IIT Integrated Information Transport

Chuyn ti thng tin tng hp IJ Identification of Justification (Series H)

Nhn dng s cn chnh ILD Infection Laser Diode

it Laser kiu phun ILEC Independent Local Exchange Carrier

Nh tng i ni ht c lp ILF Infra Low Frequency

Tn s di mc thp ILIL Input Longitudinal Interference Loss (Series G, O)

Tn hao u vo do can nhiu theo kinh tuyn IM Intensity Modulation

iu ch theo mt IM Interpersonal Messaging (Series X)

X l tin bo gia cc c nhn IMA Input Message Acknowledgement (Series F, U)

Bo nhn tin bo u vo IMC International Maintenance Centre (Series E)

Trung tm bo dng quc t IMCC ISDN Management and Co-ordinating Committee

y ban qun l v phi hp ISDN IMD Inter Modulation Distortion

Mo gia cc ln iu ch IMDTC International Multiple Destination Television Connection (Series

N)

Kt ni truyn hnh quc t IMEI International Mobile Equipment Identity (Series Q)

Nhn dng phn bit thit b thit b di ng quc t IMF International Monetary Fund (Series D)

Qu tin t quc t IMQ Instituto Italiano del Marchio de Qualit (Italy)

Vin qun l cht lng (Italia) IMSI International Mobile Station Identity (Series E, Q)

Nhn dng (phn bit) trm di ng quc t IMT International Mobile Telecommunications

Thng tin di ng quc t IMTC International Multimedia Conferencing Consortium

Consortium v hi ngh multimedia quc t IMTS Improved Mobile Telephone Service

Dch v in thoi di ng tng cng IMUX Inverse Multiplexer

B ghp knh nghch o

IN-IW

IN Intelligent Network

Mng thng minh INA Integrated Network Access

Truy nhp mng lin kt

INA Information Networking Architecture

Kin trc ni mng thng tin INF Information Message (Series Q)

Tin bo thng tin INFO Information Element Defined at the user network interface (Series

G)

Mi trng thng tin c xc nh ti giao din ngi dng INFORMS Intergrated Forcasting Management System

H thng qun l d bo lin kt INIC ISDN Network Identification Code (Series E, X)

M nhn dng mng ISDN INMARSAT International Marine Satellite Organisation

T chc v tinh hng hi quc t INMS Integrated Network Management System

H thng qun l mng tng hp INR Information Request Message (Series Q)

Tin bo yu cu thng tin INREFS Integrated Reference System

H thng chun lin kt INTELSAT International Telecommunications Satellite Organisation

T chc v tinh thng tin quc t INTUG International Telecommunications User Group

Nhm ngi dng vin thng quc t IOC Inter Office Channel

Knh bn trong tng i, knh ni b tng i IOC Integrated Optical Circuit

Mch quang lin kt IOC Index Of Cooperation (Series T)

Ch s hp tc IODC I