ng local PSTNs, 104 VS. MPLS, 446 telephony, 314 MPLS integrating ATM with, 449 Internet Assigned Numbers Authority. See IANA multiservice edge supporting, 436 (Internet Assigned Numbers Authority) for next-generation networks, 140-142 Internet-based VPNs, 348-350 over birds, 266 Internet Control Message Protocol (ICMP), 258 over WDM, 462 Internet Corporation for Assigned Names and problems with, 239-240 Numbers (ICANN), 37, 249-250, 282-283 soft phones, 321 Internet-enabled devices, 305 switching, 198-200, 240-241 Internet Engineering Steering Group (IESG), 249 TCP/IP four-layer reference model, 169-170 Internet Engineering Task Force (IETF), 249 Web phones, 321 Internet exchange points (IXPs), 289, 293-294 IP addresses Internet Group Management Protocol (IGMP), anycast, 269-270 258, 344 CIDR address scheme and, 272-274 Internet Key Exchange (IKE), 361 IANA overseeing, 250 Internet Protocol. See IP (Internet Protocol) for Internet addressing, 268-269 Internet Research Steering Group (IRSG), 249 IPv4, 271-275 Internet Research Task Force (IRTF), 249 IPv4 to IPv6 transition, 276-278 Internet service providers. See ISPs (Internet ser- IPv6, 275-280 vice providers) multicast, 269 Internet Society (ISOC), 38, 249 NAT and, 274-275 Internet World Stats, 245 POP assigning for dialup users, 286 Internetwork Packet Exchange (IPX), 259 registration of, 250 Internetworking protocols, 169-170 unicast, 269 Interoffice signaling, 131 IP Multimedia Subsystem. See IMS (IP Multimedia Interplanetary Internet (IPN), 292, 304 Subsystem) Interplanetary networking protocols, 10 IP PBXs, 322-324 Index IP precedence, 329 next generation of, 317-318 IP QoS, 295-303 overview of, 313-314 challenges, 290-291 regulatory issues, 316-317 continuum in, 299-303 voice enterprise systems, 322-324 DiffServ and, 300-301, 443-444 VS. VoIP, 314 IntServ and, 301-302, 441-442 VoIP call-signaling protocols, 330-339 mechanisms, 295-296 IPTV (IP television) NSIS, 302-303 ADSL2+ for, 507 overview of, 295 architecture of, 344-345 queuing mechanisms, 296-299 