5, 177-181 224-226, 296 Index Transmission Convergence (TC), 224 Value Added Services (VAS), 317, 398 Transmission Network, 19, 113, 161, 189, 195, VC (Virtual Container), 205, 207, 212, 213 307, 308 VCC (Virtual Channel Connection), 220, 221, Transmission network auditing, 106, 113 222, 226, 228, 231 Transmission Network Optimisation, 296, VCI, 221, 226, 227, 228, 294, 295, 355 Video Call Quality, 16 Transmission Network Planning Process, 197, Virtual Channel (VCI), 220, 221, 226, 227, 228, 294, 295, 355 Transmission Unit (TRU), 293 Virtual Channel link, 226 Transport channels, 88, 89, 102, 471 Virtual Path (VPI), 226, 227, 228, 294, 295, 355 Transport Control Protocol (TCP), 351, 353, 295, Virtual Path link, 226 471, 474 Visitor Location Register (VLR), 5, 11, 76, 328 TRAU, 286 Voice Activity Factor (VAF), 278, 279 Triggering, 98-101, 130, 131 Voice Call Quality, 62, 132, 355, 346, 399, 478 Troubleshooting follow-up, 122, 124 Voice Mail System (VMS), 318 TRX quality, 107, 133 Voice-Activity Detection, 74, 399 VP, 220, 226, 227, 294 UBR (Unspecified Bit Rate), 231 VPC (Virtual Path Connection), 220, 221, 222, Umbrella, 4, 116, 147, 148, 149, 157 Umbrella level, 151 VPI (Virtual Path Identifier), 226, 227, 228, 294, Unspecified Bit Rate (UBR), 231, 294 295, 355 Uplink and downlink power control, 143, 156 Urban, 2, 17, 21, 39, 31, 40, 41, 42, 44, 46, 48, Walfish-Ikegami Model, 40, 43, 44, 57 50, 107, 115, 116, 117, 143, 274, 275, 405, WAN, 205, 399, 402, 427 441, 443 WAP, 381 User Data Protocol (UDP), 272, 273, 277, 343, Wave Propagation, 29, 40-45, 247, 253-267 344, 345, 351, 390, 391 WCDMA, 12, 26, 28-29, 34, 38-39, 57, 69-70, User Equipment (UE), 11, 37, 39, 88, 89, 91, 92, 72, 89, 92-93, 97, 101, 181, 183, 184, 272, 93, 96, 97, 100, 186, 400, 403, 471, 472, 473, 273, 274, 329, 332, 467 475, 476, 480, 481 WCDMA carrier, 26 User-to-Network Interface (UNI), 227 WCDMA Technology, 57 USIM, 11, 494 Wideband CDMA Mobile Switching Centre Utilisation, 270, 271, 368, 371, 389, (WMSC), 350 422, 478 Wireless Local-Area Ne