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Datacommunicatie

Datacommunicatie. datacommunicatie kanaal. Systeem 1. Systeem 2. Data communicatie. A. B. Simplex. A. B. Half-duplex. A. B. Full-duplex. serieel, parallel. Bits per seconde (bps) < - > Bytes per (Bps)seconde. Baud.

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Datacommunicatie

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  1. Datacommunicatie datacommunicatie kanaal Systeem 1 Systeem 2 Security Technology 2007-2007-PICT les 1

  2. Data communicatie A B Simplex A B Half-duplex A B Full-duplex Security Technology 2007-2007-PICT les 1

  3. serieel, parallel Bits per seconde (bps) < - > Bytes per (Bps)seconde Security Technology 2007-2007-PICT les 1

  4. Baud The number of signaling elements that occur each second. The term is named after J.M.E. Baudot, the inventor of the Baudot telegraph code. bijvoorbeeld 4 niveaus 00 01 10 11 element twee bits In dat geval: bit rate = 2 x baud rate Security Technology 2007-2007-PICT les 1

  5. Multiplexen Multiplexer Demultiplexer Security Technology 2007-2007-PICT les 1

  6. TDM versus FDM Security Technology 2007-2007-PICT les 1

  7. Parallel (Strobed) data data ready ready een strobe is een opgaande of neergaande flank Security Technology 2007-2007-PICT les 1

  8. Parallel (Handshaked) data data Req Ack Req Ack Security Technology 2007-2007-PICT les 1

  9. Serieel (bit Synchroon) Shift (transmit) clock Tc Shift register Serial data Data buffer Parallel data receiver PLL Security Technology 2007-2007-PICT les 1

  10. Clock extraction options • rely on (very) accurate clocks • bit stuffing • Manchester encoding Security Technology 2007-2007-PICT les 1

  11. Serieel (frame synchroon)(tijdelijk synchroon) idle Security Technology 2007-2007-PICT les 1

  12. Serieel (asynchroon) (~ byte synchroon) Shift register Serial data Data buffer Parallel data Start bit data bit data bit Par bit Stop bit samples trigger Security Technology 2007-2007-PICT les 1

  13. Modulatie: AM, FM, PM Security Technology 2007-2007-PICT les 1

  14. Modem (modulator/demodulator) DTE DTE DCE DCE Data Terminal Equipment Data Communication Equipment V24 of RS 232 V21 … V34 Security Technology 2007-2007-PICT les 1

  15. Nullmodem DTE DTE Data Terminal Equipment Security Technology 2007-2007-PICT les 1

  16. RS-232 signal Single-ended Security Technology 2007-2007-PICT les 1

  17. RS-422 Differentiële verbinding Security Technology 2007-2007-PICT les 1

  18. RS-485 Bussysteem (TRI-state) Security Technology 2007-2007-PICT les 1

  19. Master slave Security Technology 2007-2007-PICT les 1

  20. Security Technology 2007-2007-PICT les 1

  21. Integrated Services Digital Network (ISDN) There are two types of ISDN: • Basic Rate Interface (BRI) -- consists of two 64-Kbps B-channels and one D-channel for transmitting control information. • Primary Rate Interface (PRI) -- consists of 23 B-channels and one D-channel (U.S.) or 30 B-channels and one D-channel (Europe). Security Technology 2007-2007-PICT les 1

  22. ISDN NT1/2 B-kanaal 64 kb D-kanaal 16 kb 2B+1D+48 kb (interne signalering) = 192 kb Security Technology 2007-2007-PICT les 1

  23. (Asymmetric) Digital Subscriber Link Security Technology 2007-2007-PICT les 1

  24. Opdracht • bestudeer hoofdstuk 10 Security Technology 2007-2007-PICT les 1

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