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Thursday, July 19, 2012

Physical layer functions and Servicers

  • Establishment and termination of a connection to a communications medium.
  • Participation in the process whereby the communication resources are effectively shared among multiple users
  • Conversion between the representation of digital data in user equipment and the corresponding signals transmitted over a communications channel.
  • Bit by bit or symbol by symbol delivery
  • Providing a standardized interface to physical transmission media,
  • Modulation
  • Line coding
  • Bit synchronization
  • Circuit switching
  • Multiplexing
  • Forward error correction
  • Auto negotiation
  • Serial or parallel communication
  • Bit-interleaving 
  • channel coding
  • Equalization filtering

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