PHYSICAL LAYER

Communications Systems Glossary

Communications Systems — Open Systems Interconnection reference model — Physical layer

 

 

 

 

 

 

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Information on Physical layer

The physical layer is Layer 1 of the International Standards Organization's OSI reference model. The physical layer specifies the electrical connections between the transmission medium and the computing system. For example, the RS-232 specification belongs in Layer 1.


Other topics in our resources on Communications Systems related to Physical layer include: 
 
  • Data-link layer (Layer 2)
  • network layer (Layer 3)
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  • transport layer (Layer 4)
  • session layer (Layer 5)
    		•
  • presentation layer (Layer 6)
  • application layer (Layer 7)

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