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ME Consultancy are proud to be BT's Growth Partner of The Year 2003-2004
| C/CS | County Coverage Service |
| C/I | Carrier to Interference (ratio) |
| C/I | Carrier to Interference Ratio |
| C/N | Carrier to Noise Ratio |
| CA | Conditional Access (TV PPV or subscriber control) |
| CAB | Canadian Association of Broadcasters |
| CAB | Cable Television Advertising Bureau |
| CAB | Cooperative Analysis of Broadcasting |
| CABSC | Canadian Advanced Broadcast Systems Committee |
| CAI | Common Air Interface |
| CAI | Common Air Interface Standards |
| CALEA | Communications Assistance to Law Enforcement Act |
| CALEA | Communications Assistance for Law Enforcement Act |
| CAM | Carrierless Amplitude Modulation |
| CAMS | Cable Audience Measurement Study |
| CAPAC | Composers Authors & Publishers Assn. of Canada. |
| CARP | Copyright Arbitration Rate Panel |
| CARS | Community Antenna Relay Service |
| CARU | Children's Advertising Review Unit |
| CASIE | Coalition for Ad-Supported Information & Entertainment |
| CATA | Community Antenna Television Association |
| CATI | Computer Assisted Telephone Interviewing |
| CATS | Center for Advanced Television Studies |
| CATV | Cable Television (originally Community Antenna TV) |
| CATV | Community Antenna Television (original use of CATV) |
| CAV | Constant Angular Velocity (laser recording systems) |
| CAVE | Cellular Authentication and Voice Encryption |
| CAVS | Component Analog Video Signal |
| CBA | Commonwealth Broadcasting Association (United Kingdom) |
| CBA | Community Broadcasters Association |
| CBC | Canadian Broadcasting Corporation |
| CBF | Digital Beam Forming |
| CBO | Congress of Broadcast Organizations |
| CBO | Congressional Budgit Office |
| CBO | Continuous Bit-Stream Oriented (services) |
| CBO | Control Board operator |
| CBR | Constant Bit Rate |
| CBU | Caribbean Broadcasting Union |
| CC | Closed-Captioned |
| CCB | FCC Common Carrier Bureau |
| CCC | Citizens Communication Center |
| CCD | Charge Coupled Device (used in TV cameras) |
| CCIP | Committee on Communications & Information (of the IEEE) |
| CCIR | International Radio Consultative Committee (Renamed RS) |
| CCITT | Comité Consultatif International Télégraphique et Téléphonique (known today as the ITU-T) |
| CCITT | The International Telegraph and Telephone Consultative Committee |
| CCM | Carrier Controlled Modulation |
| CCR | Central Control Room |
| CCSB | Clear Channel Broadcasting Service |
| CCT | Closed Circuit Test |
| CCT | Consultative Committee on Telecommunications |
| CCTA | Canadian Cable Television Association |
| CCTV | Closed Circuit Television |
| CCU | Camera Control Unit |
| CD | Compact Disc (digital audio recordings) |
| CDA | Communications Decency Act |
| CDBS | Consolidated DataBase System |
| CDCP | Call Data Collection Point |
| CDF | Cumulative Distribution Function |
| CDG | CDMA Development Group (see CDMA) |
| CDG | CDMA Development Group |
| CDGP | Call Data Generation Point |
| CDIS | Call Data Information Source |
| CDMA | Code Division Multiple Access |
| CDMA | Code Division Multiple Access |
| CDPD | Cellular Digital Packet Data |
| CDPD | Cellular Digital Packet Data |
| CD-R | Compact Disc - Recordable |
| CDRB | Committee for Digital Radio Broadcasting |
| CD-ROM | Compact Disc Read Only Memory (in computer systems) |
| CDRP | Call Data Rating Point |
| CDS | Cinema Digital Sound |
| CDV | Compressed Digital Video |
| CD-V | Compact Disc Video |
| CE | Chief Engineer (chief station operator) |
| CEBA | Communications Excellence to Black Americans |
| CEC | Commission of the European Communities |
| CEDAR | Computer Enhanced Digital Audio Restoration |
| CEDIA | Custom Electronic Design & Installation Association |
| CEG/EIA | Consumer Electronics Group of EIA (renamed CEMA) |
| CELP | Code Exited Linear Predictive coding |
| CEM | Civil Emergency Message (for EAS operations) |
| CEMA | Consumer Electronics Manufacturers Association |
| CEMA | Consumer Electronics Manufacturers Association (was CEG/EIA) |
| CENELEC | Committee European for Electrotechnical Standardization |
| CEPT | Council of European Postal & Telegraph (Administrations) |
| CES | Consumer Electronics Society (society of IEEE) |
| CES | Consumer Electronics Show (exhibit sponsored by CEB/EIA) |
| CES | Consolidated Earth Station (FCC term) |
| CF | Collection Function [Intercept] |
| CFA | Consumer Federation of America |
| CFO | Chief Financial Officer |
| CFR | Can't Find the Road (undefined program format) |
| CFR | Code of Federal Regulations |
| CGI | Common Gateway Interface (used primarily for Internet programming) |
| CH | Critical Hours |
| CHR | Contemporary Hit Radio (program format) |
| CHUT | Cable Households Using Television |
| CIAC | Computer Incident Advisory Capability |
| CIB | FCC Compliance and Information Bureau (Formerly FOB)) |
| CIC | Carrier Identification Code |
| CIC | Creative Incentive Coalition |
| CICATS | Computer Industry Coalition on Advanced Television Service |
| CIP | Communications & Information Policy Bureau (of State Dept.) |
| CIRT | Mexican Association of Broadcasters |
| CISN | Cable Integrated Services Network |
| CISPR | International Special (IEC) Committee on Radio Interference |
| CITEL | InterAmerican Telecommunication Commission |
| CITEL | Inter-American Telecommunications Conference |
| CIX | Commercial Internet eXchange Association |
| CLEC | Competative Local Exchange Carrier |
| CLEI | Common Language Equipment Identifier |
| CLI | Cumulative Leakage Index |
| CLIP | Connected Line Identification Presentation (Phone Caller ID) |
| CLIR | Connected Line Identification Restriction (blocks caller ID) |
| CLV | Constant Linear Velocity (laser recording systems) |
| CMBA | Concert Music Broadcasters Association |
| CME | Center for Media Education |
| CMEA | Cellular Message Encryption Algorithm |
| CMESFET | Concentric Metal Semiconductor Field Effect Transistor |
| CMF | Cymomotive Force (field strength in mV/m at 1 km) |
| CMOS | Complementary Metal Oxide Semiconductor |
| CMRF | Combined Mode Resonant Filter |
| CMRR | Common Mode Rejection Ratio |
| CMRS | Commercial Mobile Radio Services |
| CMS | Combined Symbol Matching |
| CMSA | Consolidated Metropolitan Statistical Area |
| CMT | Cellular Messaging Teleservice |
| CNAP | Calling Name Presentation |
| CNI | Calling Number Identification |
| CNIP | Calling Name Identification Presentation |
| CNIR | Calling Number Identification Restriction (Calling phone) |
| CNIR | Calling Name Identification Restriction |
| CO | Central Office (in switched telephone system) |
| CODEC | Coder-Decoder |
| COFDM | Coded Orthogonal Frequency Division Multiplex |
| COLE | Commercial Operator License Examination (FCC) |
| COLRAM | Committee on Local Radio Audience Measurement (NAB) |
| COMAR | Committee on Man and Radiation |
| CONTAM | Committee on National Television Audience Measurement (NAB) |
| CONTRAM | Committee on Local TV & Radio Audience Measurement (obsolete) |
| COO | Chief Operating Officer |
| COPS | Complex Operations Per Second |
| COS | Corporation for Open Systems International |
| COST | European Cooperation in Scientific & Technical Research |
| COTS | Commercial Off The Shelf |
| CP | Circular Polarization |
| CP | Construction Permit |
| CPB | Corporation for Public Broadcasting |
| CPCS | Common Program Control Station for EBS |
| CPD | Commission on Presidential Debates |
| CPD | Committee for Prudent Deregulation |
| CPDC | Cellular Digital Packet Data |
| CPDM | Companded Predictive Delta Modulation |
| CPE | Customer Premises Equipment (phone & data network system) |
| CPG | Conference Preparatory Group |
| CPGRP | Cost per Gross Rating Point |
| CPM | Characters Per Minute |
| CPM | Conference Preparatory Meeting (ITU World Radio Conference) |
| CPM | Cost per Thousand |
| CPN | Calling Party Number (Telephone) |
| CPP | Calling-Party Pays (telephone calls) |
| CPP | Cost per Point |
| CPS | Communications Processing Systems |
| CPS | Cable Program Service |
| CPST | Cable Programming Services Tier |
| CPW | Coplanar Waveguide |
| CRC | Canadian Research Council |
| CRC | Cycle Redundancy Clock |
| CRC | Cyclic Redundancy Check (digital data error check) |
| CREAM | Cosmic Radiation Effects & Activation Monitor |
| CRSS | Commercial Remote Sensing System (by Satellite) |
| CRT | Cathode Ray Tube (video monitor) |
| CRT | Copyright Royalty Tribunal |
| CRTC | Canadian Radio Television & Telecommunications Commission |
| CS | Check Sum (in digital data transmissions) |
| CS | Close Shot in Video or Film Production |
| CSA | Canadian Standards Association |
| CSA | Canadian Standards Association |
| CSB | FCC Cable Services Bureau |
| CSC | Customer Service Center |
| CSD | Circuit Switched Data |
| CSE | Citizens for a Sound Economy |
| CSM | Combined Signal Monitoring |
| CSO | Composite Second Order (signal beat interference) |
| CSSB | Companded (Compandored) Single SideBand |
| CSSB | Compatible Single SideBand |
| CSU | Channel Service Unit |
| CSWEC | Center for Study of Wireless Electromagnetic Compatibility |
| CT | Cordless Telephone |
| CTA | Children's Television Act (of 1990) |
| CTA | Cable Telecommunications Association |
| CTAM | Cable Television Administration & Marketing Society |
| CTB | Composite Triple Beat (multiple signal beat interference) |
| CTCM | Chrominance Time-Compression Luminance Multiplex |
| CTD | Charge Transfer Device |
| CTE | Coefficient of Thermal Expansion |
| CTED | Coalition to Enhance Diversity |
| CTIA | Cellular Telephone Industries Association |
| CTIA | Cellular Telecommunications Industry Association |
| CTO | Chief Technical Officer |
| CTR | Common Technical Regulations |
| CTS | Communications Technology Satellite |
| CTSA | Comprehensive Telecommunications Site Assessment(s) |
| CTV | Conventional Television (Analog NTSC, PAL & SECAM) |
| CTY | Country Music Program Format |
| CU | Close Up (view in video or film production) |
| CUB | Council for UHF Broadcasters |
| CUID | Community Unit Identification (FCC Cable Bureau Number) |
| CUME | Cumulative Audience |
| CUT | Coordinated Universal Time (see UTC) |
| CV | Composite Video |
| CVCC | Canadian Videotext Consultative Committee |
| CVD | Chemical Vapor Deposition |
| CVDL | Continuous Variable Delay Line |
| CVR | Cell Delay Variation |
| CVSD | Continuously Variable Slope Delta Modulation |
| CW | Continuous Wave (Radio signal without modulation) |
| CW | Call Waiting (in telephone service) |
| CWA | Communications Workers of America |
| CWAAA | Contract With America Advancement Act |