rem, 1/6, 4/3, 4/6 BRAP (Broadcast Recognition with AU (Administrative Unit), SDH, 42/14-15 Bayesian inference, 4/3 Alternating Priorities), 13/20 AUC (Authentication Centre), cellphone, BCCH (Broadcast Control Channel), BRI (Basic Rate Interface), Centrex, 35/5 47/10, 47/13 PCNs/cellphones, 47/11, 48/8-9 Bridges, LAN, 56/11-13, 56/15 Audibility, 10/5 BCH (Bose Chaudhure Hocquengherm) British Telecom trunk network, 5/12 threshold, 8/15 codes, 14/9, 47/16 Broadband coaxial cable LANs, 56/8 Audio, BDF (Building Distribution Frame), 33/8 Broadband Integrated Services digital companding, 57/16 Belgium, paging frequencies, 45/4 Network see B-ISDN digital standards, 57/15-16 Bell, telephone, 31/6 Broadband ISDN see B-ISDN see also Sound Bell mastergroup plan, FDM Broadband LAN transmission, 56/8 Audiotex, 37/3, 37/6 transmission, 20/5-6 Broadcast channel, PCN, 48/8 Audiovisual communications, 57/27, Bellcore, 22/23 Broadcasting services, 57/29-34 Bending loss, optical fibre, 53/6 frequency allocations, 26/12-13 Auditing, software configuration, 25/18 Bennett's formula, FDM unlinearity see also Frequency assignment, Auroral absorption, 9/10 noise, 20/12 Allocation and management Index/3 satellite, 51/18 UTP, 33/4-5, 33/6 recommendation 601 (1982) digital satellite frequencies, 51/4 Cabling, component standard, 57/13 Broadside antenna arrays, 17/8 computer aided layout, 33/8-10 study groups and recommendations, Broker's call, PABXs, 34/12 standards, 33/10 22/12 Brouter, LAN, 56/16 structured, 33/1-10 CCITT (Comite Consultatif Interationale Brownian noise, FDM, 20/10 CAC (Commercial Action Committee), Telephonique et Telegraphic), 22/7, BS (Base Station), cellphone, 47/3 11/17, 22/16 22/8-11, 22/13, 22/21 BSC (Base Station Controller), CAD, cable layout, 33/9-10 Blue Books, 22/10-11 AXE system, 32/18 Call accounting, 36/5-6 CCS signalling systems, 43/8-11 PCN, 48/4, 48/5, 48/6, 48/9-10 Call collision, PABXs, 34/6 document facsimile equipment, 60/5 BSI (British Standards Institute), 22/21, Call completion rate, 16/5 see al