Physical Layer 1 tutorials

Data received from Data Link Layer 2 "Frames" is formatted into "Bits" to be transmitted out from the Physical Layer 1.

  • Transmit data on the wire.

  • Moves bits between devices, specify voltage, wire speed and pin-out of cable.

  • This layer is responsible for actual physical connection between devices.

  • It may use Coaxial, CAT, Fiber Optic cable or wireless for communication.

  • Other attributes of Layer 1 include.

  • Specification of voltage, wire speed, and pin-out cables

  • Capability to receive and transmit a data signal

  • Identification of the interface that is set up between the DTE (Data Terminal Equipment) and the DCE (Data Communication Equipment).