sVersal Equaliser), 19/4 VCO (Voltage Controlled Oscillator), 18/9 Voice distribution frames, 33/8 Twiddle factors, Discrete Fourier VCRs (Video Cassette Recorders), 11/4 Voice frequency telex signalling, 59/4-5 transforms, 2/8 VCs (Virtual Containers), SDH, 42/5-8, Voice mail, 37/4 2-D parity codes, 14/5-6 42/9-17 Voice printing (speaker verification), 37/8 Two machine continuity set, 24/7 VDM formal software design, 25/5 Voice processing, TWT (Travelling Wave Tubes), 51/11 Vectors, magnetic and electric, 6/3 analogue connections, 37/6-7 satellites, 51/14 Velocity, sound, 8/4 digital connections, 37/7-8 TXE2 exchange system, 32/3-4 Vertical polarisation, 6/5-6 market, 37/3-5 TXE4 exchange system, 32/4-7 VF (Voice Frequency) signalling, 31/8, speech recognition, 37/8 Type Approvals Directive (EEC), 11/8 43/5-6 system anatomy, 37/5-6 VHF communication antennas, 17/16 text to speech, 37/8 UDP (User Datagram Protocol), 16/20-1, Vibration, engine generating plant, 24/15 Voice reponse systems, 37/3 16/24 Video, Voice signals, 10/5 UHF communication antennas, 17/16 ADCs, 19/14 Voiceband data, tranamission planning, UHF television broadcast antenna, 6/11 buffering and coder control, 57/28-30 cable distribution, 57/17-23 VP (Virtual Path), ATM, 41/11 paging frequencies, 45/3 coding, VPC (Virtual Path Connection), ATM, telecommunications industry, 11/10 ATM, 41/11 41/9-10, 41/11 UK BABT, paging regulating, 45/6 CCIR Recommendation 723, 57/28 VPI (Virtual Path Identifier), ATM, 41/4, Ultraviolet radiation, 6/20 CCITT recommendation H.261, 41/5-6, 41/11 UMTS (Universal Mobile 57/27-8 VPNs (Virtual Private Networks), 11/15 Telecommunications System), 11/9 DPCM, 19/21, 57/24-5 AXE system, 32/17 UNI (User Network Interface), duobinary, 57/9 Centrex, 35/3 SDH, 42/6 fractal based, 57/29 VO (Vector Quantising) coding, 57/26 specification and measurement, 61/3 HDVT, 57/29 VRP (Vertical Radiation Pattern), 6/11 Union Telegraphique, 22/5 hybrid, 57/26 VSATs (Very Small Aperture Terminals), Unlinearity characterisation, FDM, 20/11 IS