 47/6 Carrier leak, FDM, 20/7 55/6-9 C/N (Carrier to Noise ratio), 51/13 Carrier Sense Multiple Access see Cellphones see Cellular radio systems cable TV, 57/23 Cells, multipoint systems, 52/6 Carrier and signal suppression, FDM, 20/7 battery see Batteries optical fibres, 53/19-20 Carrier to noise ratio see C/N solar, 51/9 Cable line equipment, repeatered, 20/20-2 Carriers, digital modulation, 19/7-11 Cellular radio systems, Cable TV distribution, 57/17-23 Carriers and pilots, FDM, 20/7 analogue test equipment, 61/22-3 AM, FM and digital modulation, 57/20 Cartofone decision, 11/6 CDLC (Cellular Data Link Control), coaxial, 57/20-1 CAS (Channel Associated Signalling), 47/16 frequency agile switching, 57/21-2 data signalling, 61/22 hf multipair, 57/19 Cassegrain antenna, 17/9, 17/13 digital test equipment, 61/23-4 optical fibres, 57/21 CATV (Community Antenna TV), 57/18 frequency allocations, 26/17 space switching, 57/21 Cauchy's integral theorem, 2/15-16 intelligent networks, 47/17 switched star, 57/20 CBCS (Cordless Business microcells, 47/17 tree and branch coax, 57/19 Communications System), 49/4 multipoint application, 52/12 Cables, CBDS (Connectionless Broadband Data operation, 47/3-5 balanced pair, 15/3-5 Services), 11/10 operational networks, characteristic impedance, 33/6 CBEMA (Computer Business Equipment AMPS, 47/8 coaxial, 15/5-9, 15/17-18 Manufacturers Association), 22/24, 22/25 C450, 47/9 data transmission rates, 33/4 CCB (Coin Collecting boxes), 31/6 GSM, 47/9-14 minimising EMC, 23/24-5 CCCH (Common Control Channel), NMT, 47/9 optical fibre, 15/9-16, 15/18-19, 53/24 cellphones, 47/11 TACS, 47/8-9 submarine, 53/24 PCN, 48/8 planning, 47/5-7 screen earthing, 33/7 CCIR (Comite Consultatif des services, 9/14, 47/14-16 STP, 33/4 Radiocommunications), 22/7, 22/9-13, voice processing with, 37/4 testing, 33/7-8, 61/12 26/14-16 see also GSM; PCNs Index/4 CELP (Code Excited Linear Prediction), Clock frequency, mBnB, 28/11 measurements, 61/5 optical fibre systems, 53/23-4 CEN (Comite Europeen de minimising EMC,