on video conferenc- Vodafone, 134, 393, 415 ing, 92 in India, 400 using Skype, 216 voice VoIP over broadband services, 219 assessing quality on VoIP networks, 76 VoIP services from Skype or Google, 222 as LAN application, 78 video-on-demand (VOD), 172 over MPLS networks, 81 and need for upgrades of access networks, 192 prioritizing on VLANs, 77 video processing engines, 285 processing by DSPs, 79 Vidyo, Inc., 92 quality on VoIP, 219 Index voice compression, 14, 17, 46 IPsec VPNs, 355 voicemail, 53, 87, 306 IP VPNs, 229-230 availability in Asia, 393 secure access to, 231-234 declining use and criticality of, 88 using between offices, 229 message notification in 2G networks, 321 MPLS VPNs, 223 VoIP over broadband services, 219 service level agreements (SLAs) for, 227 Voice over Internet Protocol. See VoIP replacement for private lines, 250 voice response units (VRUs), 98 on WLANs, 374 voice services VRUs (voice response units), 98 3G and 4G mobile networks, 328 cellular networks, 134 packetized voice on LTE and WiMAX net- works, 340 WAC (Wholesale Applications Community), 361 VoIP (Voice over Internet Protocol), 18, 52 Walt Disney Company, 284 calling services over broadband, 219-223 WANs (wide area networks), 5, 19, 52, 104 hosted IP Centrex service, 222 acceleration, 271 impact on traditional carriers of VoIP acceleration and optimization, 20-22 international calling, 223 acceleration and virtualization, 54 pre-paid, free, and low-cost services, 220 dedicated services for, 251 VoIP for very small organizations, 222 Gigabit Ethernet in, 172 centralized VoIP services architecture, inefficiencies of TDM on, 248 180-183 wavelength division multiplexing, 6 diagram of, 183 wavelengths (frequencies), 242 key software functions supporting VoIP WCDMA (Wideband Code-Division Multiple services, 181 Access), 306, 312, 323, 325, 382 using redundancy to back up centralized architecture in 3G WCDMA networks, 329 IP servers, 183 evolution of, and 3.5G technologies, 327 competitors in, 151 infrasctructure in WCDMA 3G networks, 33