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Signals

Signals. Bit Synchronisation. Asynchronous Synchronous: Guaranteed state change Separate clock signal Oversampling. In baseband LANs, the entire bandwidth of the LAN cable is used to transmit a single digital signal.

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Signals

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  1. Signals

  2. Bit Synchronisation • Asynchronous • Synchronous: • Guaranteed state change • Separate clock signal • Oversampling

  3. In baseband LANs, the entire bandwidth of the LAN cable is used to transmit a single digital signal In broadband networks, the bandwidth of the cable is divided into many channels, which can transmit many simultaneous signals Bandwidth Use

  4. Multiplexing Techniques

  5. X.21 Pin numbers T (Transmit) DTE DCE 2,9 2,9 C (Control) 3,10 3,10 R (Receive) 4,11 4,11 I (Indication) 5,12 5,12 S (Timing) 6,13 6,13 B (Byte Timing) 7,14 7,14 Signal ground 8 8 Screen ground 1 1

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