 23/17 partial response, 28/11 Normalisation), 22/16, 22/19-22 Clocks, digital transmission, 28/12-13, PCM decoders, 19/14-15 CENELEC (Comite Europeen de PCN speech, 48/8-9 Normalisation Electrotechnique), 22/16, Clouds, attenuation from, 9/16 PCN TDMA radio channel, 48/8 22/19-22 CLP (Cell Loss Priority), 41/10 Reed-Solomon, 14/9 EMC standards, 23/13-14 CLR (Cell Loss Ratio), Single Error Detecting, 14/4-5 safety publications, 23/9 ATM, 41/19 source, 28/3 Central control exchanges see Reed ISDN, 44/16 source encoding theory, 4/8-9 system exchanges Clutter loss, 6/17-18 spread spectrum systems, 14/12-13 Centrex, 31/6, 35/1-6, 37/6 CM (Connection Management), Viterbi decoding, 14/10 CEPT (Conference European des cellphone, 47/13 VLCs (Variable Length), 57/25 Administrations des Postes et des CMI (Code Mark Inversion), 28/10 VQ (Vector Quantising), 57/26 Telecommunications), 22/15-16, 22/19, CMIP (Common Management see also Video, coding 22/20, 22/21 Information Protocol), OSI, 16/11, Coding gain, 14/4 cordless telecommunications, 49/3 16/12, 16/14, 16/22-4 Coding schemes, TDM, 21/12-14 PCM-30 framing format, 21/9-10 CMIS (Common Management Cofidentiality, EDI, 38/7 SDH use, 42/15 Information Service), Coherent demodulators, 18/5, 18/8, 19/7, TDM, 21/4 Event-Report service, 16/13 19/10 CEs (Control Elements), System, 32/8 OSI, 16/11, 16/12, 16/15 Colour, television signals, 57/4-5 CFM (Composite Fade Margin), CMOL (CMIP over Logic Link Control), Combinations, 1/5 millimetre systems, 50/10 16/23 Common Carrier Bureau (FCC), 22/25 Chains, Markov, 3/5-8 CMOT (CMIP Over TCP/IP), 16/22-4 Common Control Channel see CCCH Channel capacity, 4/7-8 CNR see Carrier to noise ratio Common control switching, 43/3 Channel matrix, 4/6 Co-polarised path attenuation see CPA Common signalling, TDM, 21/5 Channel-associated signalling, 29/10 Coaxial lines, repeaters, 20/20 Common-channel signalling, 29/10 Channels, Coaxial pair cables, Communication channels, noisy, 4/9-10 capacity, 4/11 construction, 15/6-7 Communication satellites see