Untitled

xxii CONTENTS
11.8 Cordless Telephony and Wireless Offi ce Telecommunications
Systems / 569
11.9 Cellular Radio / 573
11.9.1 Cellular Standards / 574
11.9.1.1 Generation 1 (1G): Analog Cellular / 574
11.9.1.2 Generation 2 (2G): Digital Cellular / 576
11.9.1.3 Cellular Data Communications: The Early
Years / 578
11.9.1.4 Generation 2.5 (2.5G) and 3 (3G), and
Beyond / 580
11.9.1.5 Multimode Cellular / 586
11.9.2 Terminal Equipment / 587
11.9.3 Present and Future of Cellular Radio / 587
11.9.3.1 Social Implications / 589
11.9.3.2 Religious Repercussions / 590
11.9.3.3 Safety Issues / 590
11.10 Packet Data Radio Networks / 591
11.11 Satellite Systems: LEOs, MEOs, and GEOs / 591
11.11.1 How LEOs Work: Iridium / 592
11.11.2 How LEOs Don’t Work: Teledesic / 595
11.11.3 GEOs Work Too: Inmarsat / 596
11.12 And That’s Not All / 596
References / 597
12 VIDEO AND MULTIMEDIA NETWORKING 600
12.1 Video Communications: Defi ned and Evolved / 601
12.2 Video Basics / 603
12.3 Analog TV Standards / 604
12.4 Digital TV and High-Defi nition TV / 605
12.5 Bandwidth and Compression / 607
12.6 Video Standards / 609
12.6.1 P × 64 / 609
12.6.2 Joint Photographic Experts Group / 610
12.6.3 Moving Pictures Experts Group / 610
12.7 Internet Protocol TeleVision (IPTV) / 612
12.8 The H.320 Family of Multimedia Standards / 612
12.8.1 H.320 / 614
12.8.2 H.321 / 614
12.8.3 H.322 / 614
12.8.4 H.323 / 614
12.8.5 H.324 / 617
12.8.6 T.120 / 617