ulation. (Or Continuous Delta not provide graphical capability.) Modulation.) Connection-Less Network Protocol. (Same as Code Division Multiple Access. CLIP.) Community Dial Office. (Usually refers to an unat- Cable News Network. (USA.) tended switching centre which serves a small com- Central Office. (Usually refers a central switching or munity and is controlled from a larger central control centre belonging to a PTT.) office.) CoCom Co-ordinating Committee on Multilateral Export Commission of the European Communities. Controls. Central and Eastern Europe. COCOT Consumer Owned Coin Operated Telephone. (Pri- Comite Europeen de Normalisation. (Committee for vately owned coin boxes linking to public telephone European Standardisation.) lines.) 62/6 Glossary CODEC COder-DECoder. Dynamic Alternative Routing. (Traffic routing COMSAT Communication Satellite Corporation. scheme proposed by BT in the UK.) CONUS Continental United States. DARPA Defence Advanced Research Projects Agency. (USA Corporation for Open Systems. (US trade associ- Government agency.) ation.) Digital Access Signalling System. (Signalling sys- COSINE Co-operation for Open Systems Interconnection tem introduced in the UK prior to CCITT standards Networking in Europe. 1.440 and 1.450.) Customer Premise Equipment. Demand Assignment Signalling and Switching unit. Control Programme for Microcomputers. (Opera- DATTS Data Acquisition Telecommand and Tracking Sta- ting system popularly used for microcomputers.) tion. CPFSK Continuous Phase Frequency Shift Keying. Digitally Assisted Television. CPODA Contention Priority-Oriented Demand Assignment Database Management System. protocol. (Multiple access technique with conten- Direct Broadcasting by Satellite. (Or Direct Broad- tion for reservations. See PODA and FPODA.) cast Satellite. High power satellite suitable for di- Coherent Phase Shift Keying. rectly beaming television programmes onto small Central Processing Unit. (Usually part of a com- receive-only satellite dishes.) puter.) Deutsche Bunderspost Tel