Index 661
IETF, 28, 67–68, 97, 117, 211, 270, 272
IGP, 252
IGRP, 267
ILEC, 368, 409
IMAP, 5
defined, 81
POP vs., 81
Impedance, 160
Improved Mobile Telephone Service (IMTS),
547
See also Cellular communications
Incumbent Local Exchange Carrier. See ILEC
Infrared transmissions, 173–174, 539
diffused IR, 174
directed IR, 173
radio vs., 540
Integrated digital network (IDN), 367
Interior Gateway Protocol. See IGP
Interior Gateway Routing Protocol. See IGRP
Intermediate System to Intermediate System.
See IS-IS
International Telecommunications Union. See
ITU
Internet address. See IP address, IPv4, and IPv6
Internet appliances, 20
Internet Architecture Board. See IAB
Internet Assigned Numbers Authority (IANA),
102
Internet Control Message Protocol. See ICMP
Internet Engineering Steering Group. See IESG
Internet Engineering Task Force. See IETF
Internet exchange point. See IXP
Internet Mail Access Protocol. See IMAP
Internet registry (IR), 123
Internet Research Steering Group. See IRSG
Internet Research Task Force. See IRTF
Internet Service Provider. See ISP
Internet Society. See ISOC
Internet, 5, 9, 19, 49, 55–138, 190, 238, 241,
246, 252
home-based connection. See Home
networking
internet vs., 9
primary attacks summary, 481
security. See Network security
Internet2, 65, 66
Internetwork, 9, 237, 265
OSI model representation, 240
Interoperability, 3, 8, 210, 224
Intranet, 10
Inverse multiplexing, 154, 374
IP address, 50, 250
assignment of, 123
classful, 125
classless, 125
See also IPv4 and IPv6
IP Security. See IPSec
IP switching, 270
IP telephony, 65, 506
IP, 53, 68, 113, 116
IPSec, 131, 138, 274, 282
authentication header, 275, 282
described, 274
encapsulating security payload, 277, 282
IPv4, 118–126, 130, 264
classes, 118
header, 132
host identifier, 119
IPv6 vs., 131
network identifier, 119
subnetting, 119
IPv5, 136
IPv6, 35, 65, 67, 118, 126, 129–136, 264, 271
address format, 134
features, 131
header, 133
IPv4 vs., 131
migration strategy, 135
unicast address format, 136
Iridium, 178
IRSG, 67
IRTF, 67
IS-136, 547
IS-95, 547
ISDN, 239, 242, 243, 248, 249, 365–382, 383,
424, 464
always on/dynamic (AO/DI), 380
B channel, 372–381
BONDING, 374, 377–378
BRI, 373–374, 377–378
broadband (B-ISDN), 380–381, 403, 424
D channel, 372–373, 375, 378, 380
data link layer protocols, 378
defined, 365
DSL.
See IDSL
feature set, 375
H channel, 372–373, 378
history, 367
home-based connection, 371
interfaces, 369
Internet connection, 377
I-series, 367–368, 378

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