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Networks - Coggle Diagram

- - - - Complex
  - - - digital subscriber line
      - asymmetric bit rate (ADSL)
        
        0-4KHz (voice)
        
        small band upstream
        
        large band upstream
      - MODEM (modulator demodulator)
        
        data + voice (not overlapping)
        
        POTS splitter
        
        ISP
        
        Public voice switch
        
        analog to digital
      - VDSL
        
        additional up down band
        
        50-100 Mb/s
    - - FTTH
      - FTTB
        
        ONT in building
      - FTTC
      - FTTCab
      - ODN
        
        only splitters and filters
      - OLT
        
        terminator
      - GPON
        
        gigabit
        
        10g GPON
      - EPON
        
        eth gigabit
        
        symmetric
  - - - 1gen
      - 2gen
        
        GSM std
        
        FDMA TDMA
        
        radius 40km
      - 3gen
        
        FDMA CDMA
        
        2Mb
      - 4G
        
        Voip
    - - change AP dynamically
    - - identify user
    - - GEO
        
        large latency
      - MEO
        
        GPS
      - LEO
        
        Star link