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1 3 April 22, 2002

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4 1. over IP ( : Voice over IP; IP Internet Protocol ) over IP??? : 2002/4/20 23:59 JST : 3

5 32 11 (4/22 ) 4 () 3 2 1? 4

6 A.C ()... ( ) 5

7 IP (amplification) (reversal) (retrieval) (obsolescence) 6

8 IP (amplification) (reversal) (retrieval) (obsolescence) 7

9 IP (amplification) (reversal) (retrieval) (obsolescence) 8

10 ( ) 9

11 10

12 (1) 1: ( ) A 0x41 a 0x61 ASCII (American Standard Code for Information Interchange) 0x20 11

13 (2) 2: ( ) -44.1kHz -16bit 12

14 (ex. DVD ) (/ ) (ex. ) 13

15 14

16 TCP/IP 15

17 16

18 ? 17

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21 Communication 1. The exchange of thoughts, messages, or information, as by speech, signals, writing, or behavior. 2. Interpersonal rapport. : The American Heritage Dictionary 20

22 ??? 21

24 23

25 - - 24

26 Protocol 1. The forms of ceremony and etiquette observed by diplomats and heads of state. 2. Computer Science A standard procedure for regulating data transmission between computers. : The American Heritage Dictionary 25

27 ISO (International Organization for Standardization) OSI (Open Systems Interconnection) 7 ISO/ITU-T (International Telecommunication Union) 26

28 OSI Application Application Presentation Presentation Session Session Transport Transport Network Data link Network Data link Physical Physical - 27

29 28

30 Application Presentation Session Transport Network Data link Physical - - router Network Data link Physical Application Presentation Session Transport Network Data link Physical 29

31 - 30

32 Network 1. An extended group of people with similar interests or concerns who interact and remain in informal contact for mutual assistance or support. 2. Computer Science A system of computers interconnected by telephone wires or other means in order to share information. : The American Heritage Dictionary 31

33 TCP/IP 32

34 - 33

35 - (LAN) ()

36 TCP/IP -TCP -IP TCP () 2 IP 35

37 TCP/IP -TCP: Transmission Control Protocol -IP: Internet Protocol -IP end-to-end Application Application TCP IP Network Interface Physical IP Network Interface Physical TCP IP Network Interface Physical 36

38 IP TCP 37

39 TCP/IP -TCP -IP TCP () 2 IP 38

40 TCP/IP -SMTP: Simple Mail Transfer Protocol -PPP: Point-to-Point Protocol -MUA: Mail User Agent -MTA: Mail Transfer Agent SMTP MTA MUA TCP port 25 port xx TCP IP Network Interface Physical PPP IP Network Interface Physical Ethernet LAN IP Network Interface Physical 39

41 - - Web browser port xx TCP IP Network Interface Physical HTTP IP Network Interface Physical -HTTP: HyperText Transfer Protocol httpd TCP IP Network Interface Physical port 80 DNS: Domain Name System IP 40

42 41

43 ( ) RFC1149 (CPIP: Carrier Pigeon Internet Protocol) 42

44 1999/7/7 : DOCUMENT LIFE a ryuichi sakamoto opera

45 (1) - 44

46 (2) (Everything over IP): (IP over Everything) - 45

47 - 46

48 IP router IP version 6 version

49 48

50 - 49

51 Roundabout ( ) - 50

52 1999/7/7 : DOCUMENT LIFE a ryuichi sakamoto opera

53 IP ( ) IP over everything, everything over IP IP IP 52

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55 2. ( ) : 2002/5/11 23:59 JST : 54

TCP/IP Internet Week 2002 [2002/12/17] Japan Registry Service Co., Ltd. No.3 Internet Week 2002 [2002/12/17] Japan Registry Service Co., Ltd. No.4 2

TCP/IP Internet Week 2002 [2002/12/17] Japan Registry Service Co., Ltd. No.3 Internet Week 2002 [2002/12/17] Japan Registry Service Co., Ltd. No.4 2 Japan Registry Service Co., Ltd. JPRS [email protected] Internet Week 2002 [2002/12/17] Japan Registry Service Co., Ltd. No.1 TCP IP DNS Windows Internet Week 2002 [2002/12/17] Japan Registry Service